use Slider for lookback period

This reverts commit c749321fe9.

.gitignore

@@ -1 +1,4 @@
 .pnpm-store
+node_modules
+.aider*
+.env

.tool-versions

@@ -1 +1,3 @@
 nodejs 20.15.1
+python 3.12.4
+pnpm 9.7.1

biome.json

@@ -0,0 +1,16 @@
+{
+	"$schema": "https://biomejs.dev/schemas/1.8.3/schema.json",
+	"organizeImports": {
+		"enabled": true
+	},
+	"formatter": {
+		"indentWidth": 2,
+		"indentStyle": "space"
+	},
+	"linter": {
+		"enabled": true,
+		"rules": {
+			"recommended": true
+		}
+	}
+}

frontend/Dockerfile

@@ -2,14 +2,14 @@
 FROM node:20-slim AS build
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
-RUN corepack enable
+RUN npm install -g corepack@latest && corepack enable
 WORKDIR /app
 # copy what's necessary to install dependencies:
 COPY package.json pnpm-lock.yaml /app/
 # install dependencies:
 RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
 # copy what's necessary to build:
-COPY tsconfig.json vite.config.ts index.html index.css postcss.config.js tailwind.config.js /app/
+COPY tsconfig.json vite.config.ts index.html index.css /app/
 COPY src /app/src
 # Vite injects envvars at build time, not runtime:
 ENV VITE_SERVER_BASE_URL=https://calendar-optimizer-server.sakal.us

frontend/index.css

@@ -1,7 +1,3 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
-
 :root {
   font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
   line-height: 1.5;

frontend/package.json

@@ -7,20 +7,23 @@
 		"preview": "vite preview"
 	},
 	"dependencies": {
+		"@mui/icons-material": "^6.1.1",
+		"@mui/material": "^6.1.1",
+		"@mui/system": "^6.1.1",
+		"@mui/x-date-pickers": "^7.18.0",
 		"@preact/signals": "^1.2.2",
 		"@trpc/client": "^10.45.0",
 		"chart.js": "^4.4.1",
+		"date-fns": "^3.6.0",
 		"dotenv": "^16.4.1",
 		"preact": "^10.13.1",
 		"preact-iso": "^2.3.2",
 		"preact-render-to-string": "^6.3.1",
+		"react": "18.3.1",
 		"react-chartjs-2": "^5.2.0"
 	},
 	"devDependencies": {
 		"@preact/preset-vite": "^2.5.0",
-		"autoprefixer": "^10.4.19",
-		"postcss": "^8.4.38",
-		"tailwindcss": "^3.4.4",
 		"typescript": "^5.3.3",
 		"vite": "^4.3.2"
 	}

frontend/postcss.config.js

@@ -1,6 +0,0 @@
-export default {
-  plugins: {
-    tailwindcss: {},
-    autoprefixer: {},
-  },
-}

frontend/src/components/Header.tsx

@@ -1,27 +1,40 @@
 import { useLocation } from "preact-iso";
+import { AppBar, Toolbar, Button, Box } from "@mui/material";
+import { styled } from "@mui/system";
+
+const StyledToolbar = styled(Toolbar)({
+  display: "flex",
+  justifyContent: "center",
+  backgroundColor: "#E0E7FF", // Indigo-200 equivalent
+});
+
+const StyledButton = styled(Button)(({ theme, active }) => ({
+  color: theme.palette.text.primary,
+  fontWeight: active ? "bold" : "normal",
+  textDecoration: active ? "underline" : "none",
+}));
 
 export function Header() {
   const { url } = useLocation();
 
   return (
-    <header class="flex flex-row justify-center">
-      <nav class="flex flex-row justify-center text-lg gap-4 max-w-5xl py-2 px-3 rounded-full  bg-indigo-200">
-        <a
+    <AppBar position="static" elevation={0}>
+      <StyledToolbar>
+        <Box sx={{ display: "flex", gap: 2 }}>
+          <StyledButton
             href="/"
-          class={
-            (url === "/" || url === "/historical-calendar-prices") &&
-            "underline font-bold"
-          }
+            active={url === "/" || url === "/historical-calendar-prices"}
           >
             Historical Calendar Prices
-        </a>
-        <a
+          </StyledButton>
+          <StyledButton
             href="/calendar-optimizer"
-          class={url === "/calendar-optimizer" && "underline font-bold"}
+            active={url === "/calendar-optimizer"}
           >
             Calendar Optimizer
-        </a>
-      </nav>
-    </header>
+          </StyledButton>
+        </Box>
+      </StyledToolbar>
+    </AppBar>
   );
 }

frontend/src/index.tsx

@@ -1,17 +1,21 @@
-import _ from "./env";
 import { render } from "preact";
 import { LocationProvider, Router, Route } from "preact-iso";
+import { ThemeProvider, createTheme } from '@mui/material/styles';
+import CssBaseline from '@mui/material/CssBaseline';
 
 import { Header } from "./components/Header.jsx";
 import { CalendarOptimizer } from "./pages/CalendarOptimizer.js";
 import { NotFound } from "./pages/_404.jsx";
-// import './style.css';
 import { HistoricalCalendarPrices } from "./pages/HistoricalCalendarPrices.js";
 
+const theme = createTheme();
+
 export function App() {
   return (
+    <ThemeProvider theme={theme}>
+      <CssBaseline />
       <LocationProvider>
-      <div class="flex flex-col justify-start gap-4">
+        <div>
           <Header />
           <main>
             <Router>
@@ -26,6 +30,7 @@ export function App() {
           </main>
         </div>
       </LocationProvider>
+    </ThemeProvider>
   );
 }
 

frontend/src/pages/CalendarOptimizer.tsx

@@ -10,7 +10,16 @@ import {
   Title,
 } from "chart.js";
 import { Scatter } from "react-chartjs-2";
-// import "./style.css";
+import {
+  Container,
+  Grid,
+  Typography,
+  FormControl,
+  InputLabel,
+  Select,
+  MenuItem,
+  Paper,
+} from "@mui/material";
 
 ChartJS.register(LinearScale, CategoryScale, PointElement, Tooltip, Title);
 
@@ -77,7 +86,7 @@ function chooseStrike(strike: string) {
     .query({
       underlying: chosenUnderlying.value,
       expirationDate: chosenExpiration.value,
-      strike: parseFloat(strike),
+      strike: Number.parseFloat(strike),
     })
     .then((getOpensForOptionContractResponse) => {
       optionContractUplotData.value = getOpensForOptionContractResponse;
@@ -114,98 +123,87 @@ export function CalendarOptimizer() {
   useEffect(handleInit, []);
 
   return (
-    /* container for centering: */
-    <div class="flex flex-row justify-center">
-      <div class="flex flex-col justify-start gap-4">
-        {/* inputs form container: */}
-        <div class="flex flex-col justify-start gap-1">
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Available Underlyings</label>
-            </div>
-            <div class="my-auto w-2/3">
-              {availableUnderlyings.value.length === 0 ? (
-                "Loading..."
-              ) : (
-                <select
+    <Container maxWidth="lg">
+      <Grid container spacing={4}>
+        <Grid item xs={12}>
+          <Typography variant="h4" gutterBottom>
+            Calendar Optimizer
+          </Typography>
+        </Grid>
+        <Grid item xs={12} md={6}>
+          <Paper elevation={3} sx={{ p: 3 }}>
+            <Grid container spacing={2}>
+              <Grid item xs={12}>
+                <FormControl fullWidth>
+                  <InputLabel>Available Underlyings</InputLabel>
+                  <Select
+                    value={chosenUnderlying.value || ""}
                     onChange={handleUnderlyingChange}
-                  class="border border-gray-300 focus:border-blue-400"
+                    label="Available Underlyings"
                   >
-                  {availableUnderlyings.value.map((availableUnderlying) => (
-                    <option value={availableUnderlying}>
-                      {availableUnderlying}
-                    </option>
+                    {availableUnderlyings.value.map((underlying) => (
+                      <MenuItem key={underlying} value={underlying}>
+                        {underlying}
+                      </MenuItem>
                     ))}
-                </select>
-              )}
-            </div>
-          </div>
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Available "As-of" Dates</label>
-            </div>
-            <div class="my-auto w-2/3">
-              {availableAsOfDates.value.length === 0 ? (
-                "Loading..."
-              ) : (
-                <select
+                  </Select>
+                </FormControl>
+              </Grid>
+              <Grid item xs={12}>
+                <FormControl fullWidth>
+                  <InputLabel>Available "As-of" Dates</InputLabel>
+                  <Select
+                    value={chosenAsOfDate.value || ""}
                     onChange={handleAsOfDateChange}
-                  class="border border-gray-300 focus:border-blue-400"
+                    label='Available "As-of" Dates'
                   >
-                  {availableAsOfDates.value.map((availableAsOfDate) => (
-                    <option value={availableAsOfDate}>
-                      {availableAsOfDate}
-                    </option>
+                    {availableAsOfDates.value.map((asOfDate) => (
+                      <MenuItem key={asOfDate} value={asOfDate}>
+                        {asOfDate}
+                      </MenuItem>
                     ))}
-                </select>
-              )}
-            </div>
-          </div>
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Available Expirations</label>
-            </div>
-            <div class="my-auto w-2/3">
-              {availableExpirations.value.length === 0 ? (
-                "Loading..."
-              ) : (
-                <select
+                  </Select>
+                </FormControl>
+              </Grid>
+              <Grid item xs={12}>
+                <FormControl fullWidth>
+                  <InputLabel>Available Expirations</InputLabel>
+                  <Select
+                    value={chosenExpiration.value || ""}
                     onChange={handleExpirationChange}
-                  class="border border-gray-300 focus:border-blue-400"
+                    label="Available Expirations"
                   >
-                  {availableExpirations.value.map((availableExpiration) => (
-                    <option value={availableExpiration}>
-                      {availableExpiration}
-                    </option>
+                    {availableExpirations.value.map((expiration) => (
+                      <MenuItem key={expiration} value={expiration}>
+                        {expiration}
+                      </MenuItem>
                     ))}
-                </select>
-              )}
-            </div>
-          </div>
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Available Strikes</label>
-            </div>
-            <div class="my-auto w-2/3">
-              {availableStrikes.value.length === 0 ? (
-                "Loading..."
-              ) : (
-                <select
+                  </Select>
+                </FormControl>
+              </Grid>
+              <Grid item xs={12}>
+                <FormControl fullWidth>
+                  <InputLabel>Available Strikes</InputLabel>
+                  <Select
+                    value={chosenStrike.value || ""}
                     onChange={handleStrikeChange}
-                  class="border border-gray-300 focus:border-blue-400"
+                    label="Available Strikes"
                   >
-                  {availableStrikes.value.map((availableStrike) => (
-                    <option value={availableStrike}>{availableStrike}</option>
+                    {availableStrikes.value.map((strike) => (
+                      <MenuItem key={strike} value={strike}>
+                        {strike}
+                      </MenuItem>
                     ))}
-                </select>
-              )}
-            </div>
-          </div>
-        </div>
-        <div className="chart-container">
+                  </Select>
+                </FormControl>
+              </Grid>
+            </Grid>
+          </Paper>
+        </Grid>
+        <Grid item xs={12} md={6}>
+          <Paper elevation={3} sx={{ p: 3, height: "100%" }}>
             {chosenUnderlying.value !== null &&
             underlyingUplotData.value.length > 0 ? (
-            <div className="chart">
               <Scatter
                 data={{
                   datasets: [
@@ -223,24 +221,20 @@ export function CalendarOptimizer() {
                         text: "Time",
                       },
                       ticks: {
-                        callback: function (value, index, ticks) {
+                        callback: (value, index, ticks) => {
                           return new Date((value as number) * 1000)
                             .toISOString()
                             .substring(0, 10);
                         },
                       },
-                      // min: (new Date(chosenLookbackPeriodStart.value)).getTime()/1000,
-                      // max: (new Date(chosenLookbackPeriodEnd.value)).getTime()/1000,
                     },
                     y: {
                       beginAtZero: false,
                       ticks: {
-                        callback: function (value, index, ticks) {
-                          return "$" + value.toString();
+                        callback: (value, index, ticks) => {
+                          return `$${value.toString()}`;
                         },
                       },
-                      // min: 0,
-                      // max: maxChartPrice.value,
                     },
                   },
                   elements: {
@@ -265,16 +259,18 @@ export function CalendarOptimizer() {
                   maintainAspectRatio: false,
                 }}
               />
-            </div>
             ) : (
-            <></>
+              <Typography>Loading Chart...</Typography>
             )}
+          </Paper>
+        </Grid>
+        <Grid item xs={12}>
+          <Paper elevation={3} sx={{ p: 3 }}>
             {chosenUnderlying.value !== null &&
             chosenAsOfDate.value !== null &&
             chosenExpiration.value !== null &&
             chosenStrike.value !== null &&
             optionContractUplotData.value.length > 0 ? (
-            <div className="chart">
               <Scatter
                 data={{
                   datasets: [
@@ -292,24 +288,20 @@ export function CalendarOptimizer() {
                         text: "Time",
                       },
                       ticks: {
-                        callback: function (value, index, ticks) {
+                        callback: (value, index, ticks) => {
                           return new Date((value as number) * 1000)
                             .toISOString()
                             .substring(0, 10);
                         },
                       },
-                      // min: (new Date(chosenLookbackPeriodStart.value)).getTime()/1000,
-                      // max: (new Date(chosenLookbackPeriodEnd.value)).getTime()/1000,
                     },
                     y: {
                       beginAtZero: false,
                       ticks: {
-                        callback: function (value, index, ticks) {
-                          return "$" + value.toString();
+                        callback: (value, index, ticks) => {
+                          return `$${value.toString()}`;
                         },
                       },
-                      // min: 0,
-                      // max: maxChartPrice.value,
                     },
                   },
                   elements: {
@@ -334,12 +326,12 @@ export function CalendarOptimizer() {
                   maintainAspectRatio: false,
                 }}
               />
-            </div>
             ) : (
-            <></>
+              <Typography>Loading Chart...</Typography>
             )}
-        </div>
-      </div>
-    </div>
+          </Paper>
+        </Grid>
+      </Grid>
+    </Container>
   );
 }

frontend/src/pages/HistoricalCalendarPrices.tsx

@@ -1,4 +1,3 @@
-import { signal, computed } from "@preact/signals";
 import { useEffect } from "preact/hooks";
 import { trpc } from "../trpc.js";
 import {
@@ -6,381 +5,160 @@ import {
   LinearScale,
   CategoryScale,
   PointElement,
+  LineElement,
   Tooltip,
   Title,
 } from "chart.js";
 import { Scatter } from "react-chartjs-2";
-// import './style.css';
+import {
+  Container,
+  Grid2,
+  Typography,
+  Paper,
+  Popper,
+  ClickAwayListener,
+  Stack,
+} from "@mui/material";
+import {
+  availableUnderlyings,
+  calendarExitPriceChartData,
+  isPopperOpen,
+  lookbackPeriodEnd,
+  lookbackPeriodStart,
+  maxChartPrice,
+  maxN,
+  popperAnchorEl,
+  popperContent,
+  similarCalendarPriceChartData,
+  stockPriceChartData,
+  underlying,
+} from "./HistoricalCalendarPrices/state.js";
+import { EditableStrike } from "./HistoricalCalendarPrices/EditableStrike.js";
+import {
+  refreshcalendarExitPriceChartData,
+  refreshSimilarCalendarPriceChartData,
+  refreshStockPriceChartData,
+} from "./HistoricalCalendarPrices/actions.js";
+import { EditableUnderlying } from "./HistoricalCalendarPrices/EditableUnderlying.js";
+import { EditableOpenDTE } from "./HistoricalCalendarPrices/EditableOpenDTE.js";
+import { EditableExitDTE } from "./HistoricalCalendarPrices/EditableExitDTE.js";
+import { EditableSpan } from "./HistoricalCalendarPrices/EditableSpan.js";
+import { EditableLookbackPeriod } from "./HistoricalCalendarPrices/EditableLookbackPeriod.js";
 
-ChartJS.register(LinearScale, CategoryScale, PointElement, Tooltip, Title);
-
-const availableUnderlyings = signal([]);
-const chosenUnderlying = signal(null);
-
-const chosenDaysToFrontExpiration = signal(14);
-
-const chosenDaysBetweenFrontAndBackExpiration = signal(14);
-
-const chosenStrikePercentageFromUnderlyingPrice = signal(1.4);
-const chosenStrikePercentageFromUnderlyingPriceRadius = signal(0.05);
-
-const chosenExitToFrontExpiration = signal(2);
-
-const historicalStockQuoteChartData = signal([]);
-
-const historicalCalendarQuoteChartData = signal([]);
-
-const historicalCalendarExitQuoteChartData = signal([]);
-
-const chosenLookbackPeriodStart = signal("2022-01-01");
-const chosenLookbackPeriodEnd = signal("2024-01-01");
-
-const maxChartPrice = computed(() =>
-  Math.max(
-    Math.max.apply(
-      null,
-      historicalCalendarQuoteChartData.value.map((d) => d.y)
-    ),
-    Math.max.apply(
-      null,
-      historicalCalendarExitQuoteChartData.value.map((d) => d.y)
-    )
-  )
+ChartJS.register(
+  LinearScale,
+  CategoryScale,
+  PointElement,
+  LineElement,
+  Tooltip,
+  Title
 );
 
-const maxN = computed(() =>
-  Math.max.apply(
-    null,
-    historicalCalendarExitQuoteChartData.value.map((d) => d.n)
-  )
-);
-
-const refreshHistoricalStockQuoteChartData = () => {
-  historicalStockQuoteChartData.value = [];
-  trpc.getHistoricalStockQuoteChartData
-    .query({
-      underlying: chosenUnderlying.value,
-      lookbackPeriodStart: chosenLookbackPeriodStart.value,
-      lookbackPeriodEnd: chosenLookbackPeriodEnd.value,
-    })
-    .then((getHistoricalStockQuoteChartDataResponse) => {
-      historicalStockQuoteChartData.value =
-        getHistoricalStockQuoteChartDataResponse;
-    });
-};
-const refreshHistoricalCalendarQuoteChartData = () => {
-  historicalCalendarQuoteChartData.value = [];
-  trpc.getHistoricalCalendarQuoteChartData
-    .query({
-      underlying: chosenUnderlying.value,
-      daysToFrontExpiration: chosenDaysToFrontExpiration.value,
-      daysBetweenFrontAndBackExpiration:
-        chosenDaysBetweenFrontAndBackExpiration.value,
-      strikePercentageFromUnderlyingPriceRangeMin:
-        chosenStrikePercentageFromUnderlyingPrice.value -
-        chosenStrikePercentageFromUnderlyingPriceRadius.value,
-      strikePercentageFromUnderlyingPriceRangeMax:
-        chosenStrikePercentageFromUnderlyingPrice.value +
-        chosenStrikePercentageFromUnderlyingPriceRadius.value,
-      lookbackPeriodStart: chosenLookbackPeriodStart.value,
-      lookbackPeriodEnd: chosenLookbackPeriodEnd.value,
-    })
-    .then((getHistoricalCalendarQuoteChartDataResponse) => {
-      historicalCalendarQuoteChartData.value =
-        getHistoricalCalendarQuoteChartDataResponse;
-    });
-};
-const refreshHistoricalCalendarExitQuoteChartData = () => {
-  historicalCalendarExitQuoteChartData.value = [];
-  trpc.getHistoricalCalendarExitQuoteChartData
-    .query({
-      underlying: chosenUnderlying.value,
-      daysToFrontExpiration: chosenExitToFrontExpiration.value,
-      daysBetweenFrontAndBackExpiration:
-        chosenDaysBetweenFrontAndBackExpiration.value,
-      lookbackPeriodStart: chosenLookbackPeriodStart.value,
-      lookbackPeriodEnd: chosenLookbackPeriodEnd.value,
-    })
-    .then((getHistoricalCalendarExitQuoteChartDataResponse) => {
-      historicalCalendarExitQuoteChartData.value =
-        getHistoricalCalendarExitQuoteChartDataResponse;
-    });
-};
 const handleInit = () => {
-  trpc.getAvailableUnderlyings.query().then((availableUnderlyingsResponse) => {
+  trpc.CalendarCharacteristicsForm.getAvailableUnderlyings
+    .query()
+    .then((availableUnderlyingsResponse) => {
       availableUnderlyings.value = availableUnderlyingsResponse;
-    chosenUnderlying.value = availableUnderlyingsResponse[0];
-    refreshHistoricalStockQuoteChartData();
-    refreshHistoricalCalendarQuoteChartData();
-    refreshHistoricalCalendarExitQuoteChartData();
+      underlying.value = availableUnderlyingsResponse[0];
+      refreshStockPriceChartData();
+      refreshSimilarCalendarPriceChartData();
+      refreshcalendarExitPriceChartData();
     });
 };
-const handleUnderlyingChange = (e) => {
-  if (chosenUnderlying.value !== e.target.value) {
-    chosenUnderlying.value = e.target.value;
-    refreshHistoricalStockQuoteChartData();
-    refreshHistoricalCalendarQuoteChartData();
-    refreshHistoricalCalendarExitQuoteChartData();
-  }
-};
-const handleDaysToFrontExpirationChange = (e) => {
-  if (chosenDaysToFrontExpiration.value !== parseInt(e.target.value)) {
-    chosenDaysToFrontExpiration.value = parseInt(e.target.value);
-    refreshHistoricalCalendarQuoteChartData();
-  }
-};
-const handleDaysBetweenFrontAndBackExpirationChange = (e) => {
-  if (
-    chosenDaysBetweenFrontAndBackExpiration.value !== parseInt(e.target.value)
-  ) {
-    chosenDaysBetweenFrontAndBackExpiration.value = parseInt(e.target.value);
-    refreshHistoricalCalendarQuoteChartData();
-    refreshHistoricalCalendarExitQuoteChartData();
-  }
-};
-const handleStrikePercentageFromUnderlyingPriceChange = (e) => {
-  if (
-    chosenStrikePercentageFromUnderlyingPrice.value !==
-    parseFloat(e.target.value)
-  ) {
-    chosenStrikePercentageFromUnderlyingPrice.value = parseFloat(
-      e.target.value
-    );
-    refreshHistoricalCalendarQuoteChartData();
-  }
-};
-const handleStrikePercentageFromUnderlyingPriceRadiusChange = (e) => {
-  if (
-    chosenStrikePercentageFromUnderlyingPriceRadius.value !==
-    parseFloat(e.target.value)
-  ) {
-    chosenStrikePercentageFromUnderlyingPriceRadius.value = parseFloat(
-      e.target.value
-    );
-    refreshHistoricalCalendarQuoteChartData();
-  }
-};
-const handleExitToFrontExpirationChange = (e) => {
-  if (chosenExitToFrontExpiration.value !== parseInt(e.target.value)) {
-    chosenExitToFrontExpiration.value = parseInt(e.target.value);
-    refreshHistoricalCalendarExitQuoteChartData();
-  }
-};
-
-const handleLookbackPeriodStartChange = (e) => {
-  if (chosenLookbackPeriodStart.value !== e.target.value) {
-    chosenLookbackPeriodStart.value = e.target.value;
-    refreshHistoricalStockQuoteChartData();
-    refreshHistoricalCalendarQuoteChartData();
-    refreshHistoricalCalendarExitQuoteChartData();
-  }
-};
-const handleLookbackPeriodEndChange = (e) => {
-  if (chosenLookbackPeriodEnd.value !== e.target.value) {
-    chosenLookbackPeriodEnd.value = e.target.value;
-    refreshHistoricalStockQuoteChartData();
-    refreshHistoricalCalendarQuoteChartData();
-    refreshHistoricalCalendarExitQuoteChartData();
-  }
-};
 
 export function HistoricalCalendarPrices() {
   useEffect(handleInit, []);
 
   return (
-    /* container for centering: */
-    <div class="flex flex-row justify-center">
-      <div class="flex flex-col justify-start gap-4">
-        {/* inputs form container: */}
-        <div class="flex flex-col justify-start gap-1 divide-y">
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Available Underlyings</label>
-            </div>
-            <div class="my-auto w-2/3">
-              {availableUnderlyings.value.length === 0 ? (
-                "Loading..."
-              ) : (
-                <select
-                  onChange={handleUnderlyingChange}
-                  class="border border-gray-300 focus:border-blue-400"
+    <Container maxWidth="lg">
+      <Grid2 container spacing={4} columns={12}>
+        {/* <Grid2 size={{ xs: 12 }}>
+          
+          <Typography variant="h4" gutterBottom>
+            <EditableUnderlying /> :
+            <EditableSpan />
+            -Day Calendar @ <EditableStrike />
+            %-from-the-money
+          </Typography>
+          <Typography variant="h5" gutterBottom sx={{ pl: 1 }}>
+            Opening at <EditableOpenDTE /> DTE, Closing at <EditableExitDTE />
+            DTE
+          </Typography>
+          <Typography variant="h5" gutterBottom>
+            <EditableLookbackPeriodStart />-
+            <EditableLookbackPeriodEnd />
+          </Typography>
+          <ClickAwayListener
+            onClickAway={() => {
+              isPopperOpen.value = false;
+              // refreshSimilarCalendarPriceChartData();
+              console.log("clicked away");
+            }}
           >
-                  {availableUnderlyings.value.map((availableUnderlying) => (
-                    <option value={availableUnderlying}>
-                      {availableUnderlying}
-                    </option>
-                  ))}
-                </select>
-              )}
-            </div>
-          </div>
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Now-to-Front-Month "Days to Expiration"</label>
-            </div>
-            <div class="my-auto w-2/3">
-              <input
-                type="text"
-                onBlur={handleDaysToFrontExpirationChange}
-                value={chosenDaysToFrontExpiration.value}
-                class="border border-gray-300 focus:border-blue-400"
-              />
-              Days
-            </div>
-          </div>
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Front-to-Back-Month "Days to Expiration" Difference</label>
-            </div>
-            <div class="my-auto w-2/3">
-              <input
-                type="text"
-                onBlur={handleDaysBetweenFrontAndBackExpirationChange}
-                value={chosenDaysBetweenFrontAndBackExpiration.value}
-                class="border border-gray-300 focus:border-blue-400"
-              />
-              Days Difference
-            </div>
-          </div>
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>"Strike Percentage From Underlying Price" Range</label>
-            </div>
-            <div class="my-auto w-2/3">
-              <input
-                type="text"
-                onBlur={handleStrikePercentageFromUnderlyingPriceChange}
-                value={chosenStrikePercentageFromUnderlyingPrice.value}
-                class="border border-gray-300 focus:border-blue-400"
-              />
-              % +/-
-              <input
-                type="text"
-                onBlur={handleStrikePercentageFromUnderlyingPriceRadiusChange}
-                value={chosenStrikePercentageFromUnderlyingPriceRadius.value}
-                class="border border-gray-300 focus:border-blue-400"
-              />
-              % from ATM
-            </div>
-          </div>
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Exit-to-Front-Month "Days to Expiration"</label>
-            </div>
-            <div class="my-auto w-2/3">
-              <input
-                type="text"
-                onBlur={handleExitToFrontExpirationChange}
-                value={chosenExitToFrontExpiration.value}
-                class="border border-gray-300 focus:border-blue-400"
-              />
-              Days
-            </div>
-          </div>
-          <div class="flex flex-row w-160 gap-3">
-            <div class="text-right w-1/3">
-              <label>Lookback Period</label>
-            </div>
-            <div class="my-auto w-2/3">
-              <input
-                type="text"
-                onBlur={handleLookbackPeriodStartChange}
-                value={chosenLookbackPeriodStart.value}
-                class="border border-gray-300 focus:border-blue-400"
-              />
-              -
-              <input
-                type="text"
-                onBlur={handleLookbackPeriodEndChange}
-                value={chosenLookbackPeriodEnd.value}
-                class="border border-gray-300 focus:border-blue-400"
-              />
-            </div>
-          </div>
-        </div>
-        {/* charts container: */}
-        <div className="flex flex-col justify-start gap-3">
-          <div className="min-h-96">
-            {chosenUnderlying.value !== null &&
-            historicalStockQuoteChartData.value.length > 0 ? (
-              <div className="h-full">
-                <Scatter
-                  data={{
-                    datasets: [
-                      {
-                        label: "Stock Open Price",
-                        data: historicalStockQuoteChartData.value,
-                      },
-                    ],
+            <Popper open={isPopperOpen.value} anchorEl={popperAnchorEl.value}>
+              <Paper elevation={3} sx={{ p: 3 }}>
+                {popperContent.value}
+              </Paper>
+            </Popper>
+          </ClickAwayListener>
+        </Grid2> */}
+
+        <Grid2 size={{ xs: 12 }}>
+          <Stack direction="row" spacing={2}>
+            <Typography gutterBottom minWidth={"8em"}>
+              Underlying
+            </Typography>
+            <EditableUnderlying />
+          </Stack>
+          <Stack direction="row" spacing={2}>
+            <Typography gutterBottom minWidth={"8em"}>
+              Open DTE
+            </Typography>
+            <EditableOpenDTE />
+          </Stack>
+          <Stack direction="row" spacing={2}>
+            <Typography gutterBottom minWidth={"8em"}>
+              Exit DTE
+            </Typography>
+            <EditableExitDTE />
+          </Stack>
+          <Stack direction="row" spacing={2}>
+            <Typography gutterBottom minWidth={"8em"}>
+              Span
+            </Typography>
+            <EditableSpan />
+          </Stack>
+          <Stack direction="row" spacing={2}>
+            <Typography gutterBottom minWidth={"8em"}>
+              Lookback Period
+            </Typography>
+            <EditableLookbackPeriod />
+          </Stack>
+          <ClickAwayListener
+            onClickAway={() => {
+              isPopperOpen.value = false;
+              // refreshSimilarCalendarPriceChartData();
+              console.log("clicked away");
             }}
-                  options={{
-                    scales: {
-                      x: {
-                        title: {
-                          display: true,
-                          text: "Time",
-                        },
-                        ticks: {
-                          callback: function (value, index, ticks) {
-                            return new Date((value as number) * 1000)
-                              .toISOString()
-                              .substring(0, 10);
-                          },
-                        },
-                        min:
-                          new Date(chosenLookbackPeriodStart.value).getTime() /
-                          1000,
-                        max:
-                          new Date(chosenLookbackPeriodEnd.value).getTime() /
-                          1000,
-                      },
-                      y: {
-                        beginAtZero: false,
-                        ticks: {
-                          callback: function (value, index, ticks) {
-                            return "$" + value.toString();
-                          },
-                        },
-                      },
-                    },
-                    elements: {
-                      point: {
-                        radius: 1,
-                        borderWidth: 0,
-                      },
-                    },
-                    plugins: {
-                      tooltip: {
-                        enabled: false,
-                      },
-                      legend: {
-                        display: false,
-                      },
-                      title: {
-                        display: true,
-                        text: "Stock Price",
-                      },
-                    },
-                    animation: false,
-                    maintainAspectRatio: false,
-                    events: [],
-                  }}
-                />
-              </div>
-            ) : (
-              <div className="h-full">Loading Chart...</div>
-            )}
-          </div>
-          <div className="min-h-96">
-            {chosenUnderlying.value !== null &&
-            historicalCalendarQuoteChartData.value.length > 0 ? (
-              <div className="h-full">
+          >
+            <Popper open={isPopperOpen.value} anchorEl={popperAnchorEl.value}>
+              <Paper elevation={3} sx={{ p: 3 }}>
+                {popperContent.value}
+              </Paper>
+            </Popper>
+          </ClickAwayListener>
+        </Grid2>
+
+        <Grid2 size={{ xs: 12, md: 6 }}>
+          <Paper elevation={3} sx={{ p: 3, minHeight: "28em" }}>
+            {underlying.value !== null &&
+            similarCalendarPriceChartData.value.length > 0 ? (
               <Scatter
                 data={{
                   datasets: [
                     {
                       label: "Calendar Open Price",
-                        data: historicalCalendarQuoteChartData.value,
+                      data: similarCalendarPriceChartData.value,
                     },
                   ],
                 }}
@@ -392,25 +170,19 @@ export function HistoricalCalendarPrices() {
                         text: "Time",
                       },
                       ticks: {
-                          callback: function (value, index, ticks) {
-                            return new Date((value as number) * 1000)
+                        callback: (value, index, ticks) =>
+                          new Date((value as number) * 1000)
                             .toISOString()
-                              .substring(0, 10);
+                            .substring(0, 10),
                       },
-                        },
-                        min:
-                          new Date(chosenLookbackPeriodStart.value).getTime() /
-                          1000,
-                        max:
-                          new Date(chosenLookbackPeriodEnd.value).getTime() /
-                          1000,
+                      min: new Date(lookbackPeriodStart.value).getTime() / 1000,
+                      max: new Date(lookbackPeriodEnd.value).getTime() / 1000,
                     },
                     y: {
                       beginAtZero: true,
                       ticks: {
-                          callback: function (value, index, ticks) {
-                            return "$" + value.toString();
-                          },
+                        callback: (value, index, ticks) =>
+                          `$${value.toString()}`,
                       },
                       min: 0,
                       max: maxChartPrice.value,
@@ -433,21 +205,21 @@ export function HistoricalCalendarPrices() {
                   events: [],
                 }}
               />
-              </div>
             ) : (
-              <div className="h-full">Loading Chart...</div>
+              <Typography>Loading Chart...</Typography>
             )}
-          </div>
-          <div className="min-h-96">
-            {chosenUnderlying.value !== null &&
-            historicalCalendarQuoteChartData.value.length > 0 ? (
-              <div className="h-full">
+          </Paper>
+        </Grid2>
+        <Grid2 size={{ xs: 12, md: 6 }}>
+          <Paper elevation={3} sx={{ p: 3, minHeight: "28em" }}>
+            {underlying.value !== null &&
+            calendarExitPriceChartData.value.length > 0 ? (
               <Scatter
                 data={{
                   datasets: [
                     {
                       label: "Calendar Exit Price",
-                        data: historicalCalendarExitQuoteChartData.value,
+                      data: calendarExitPriceChartData.value,
                     },
                   ],
                 }}
@@ -461,17 +233,15 @@ export function HistoricalCalendarPrices() {
                         text: "%-From-the-Money",
                       },
                       ticks: {
-                          callback: function (value, index, ticks) {
-                            return value.toString() + "%";
-                          },
+                        callback: (value, index, ticks) =>
+                          `${value.toString()}%`,
                       },
                     },
                     y: {
                       beginAtZero: true,
                       ticks: {
-                          callback: function (value, index, ticks) {
-                            return "$" + value.toString();
-                          },
+                        callback: (value, index, ticks) =>
+                          `$${value.toString()}`,
                       },
                       min: 0,
                       max: maxChartPrice.value,
@@ -480,7 +250,7 @@ export function HistoricalCalendarPrices() {
                   elements: {
                     point: {
                       borderWidth: 0,
-                        backgroundColor: function (context) {
+                      backgroundColor: (context) => {
                         const n = (
                           context.raw as { x: number; y: number; n: number }
                         ).n;
@@ -509,13 +279,82 @@ export function HistoricalCalendarPrices() {
                   events: [],
                 }}
               />
-              </div>
             ) : (
-              <div className="h-full">Loading Chart...</div>
+              <Typography>Loading Chart...</Typography>
             )}
-          </div>
-        </div>
-      </div>
-    </div>
+          </Paper>
+        </Grid2>
+        <Grid2 size={{ xs: 12 }}>
+          <Paper elevation={3} sx={{ p: 3, minHeight: "28em", height: "100%" }}>
+            {underlying.value !== null &&
+            stockPriceChartData.value.length > 0 ? (
+              <Scatter
+                data={{
+                  datasets: [
+                    {
+                      label: "Stock Open Price",
+                      data: stockPriceChartData.value,
+                    },
+                  ],
+                }}
+                options={{
+                  showLine: true,
+                  normalized: true,
+                  scales: {
+                    x: {
+                      title: {
+                        display: true,
+                        text: "Time",
+                      },
+                      ticks: {
+                        callback: (value, index, ticks) =>
+                          new Date((value as number) * 1000)
+                            .toISOString()
+                            .substring(0, 10),
+                      },
+                      min: new Date(lookbackPeriodStart.value).getTime() / 1000,
+                      max: new Date(lookbackPeriodEnd.value).getTime() / 1000,
+                    },
+                    y: {
+                      beginAtZero: false,
+                      ticks: {
+                        callback: (value, index, ticks) =>
+                          `$${value.toString()}`,
+                      },
+                    },
+                  },
+                  elements: {
+                    point: {
+                      radius: 2,
+                      borderWidth: 0,
+                    },
+                    line: {
+                      borderWidth: 2,
+                    },
+                  },
+                  plugins: {
+                    tooltip: {
+                      enabled: false,
+                    },
+                    legend: {
+                      display: false,
+                    },
+                    title: {
+                      display: true,
+                      text: "Stock Price",
+                    },
+                  },
+                  animation: false,
+                  maintainAspectRatio: false,
+                  events: [],
+                }}
+              />
+            ) : (
+              <Typography>Loading Chart...</Typography>
+            )}
+          </Paper>
+        </Grid2>
+      </Grid2>
+    </Container>
   );
 }

frontend/src/pages/HistoricalCalendarPrices/EditableExitDTE.tsx

@@ -0,0 +1,28 @@
+import TextField from "@mui/material/TextField";
+import { EditableValue } from "./EditableValue";
+import { exitDTE } from "./state";
+import { refreshcalendarExitPriceChartData } from "./actions";
+import Slider from "@mui/material/Slider";
+
+const handleExitDTEChange = (e) => {
+  if (exitDTE.value !== Number.parseInt(e.target.value)) {
+    exitDTE.value = Number.parseInt(e.target.value);
+    refreshcalendarExitPriceChartData();
+  }
+};
+
+export function EditableExitDTE() {
+  return (
+    <Slider
+      value={exitDTE.value}
+      onChange={handleExitDTEChange}
+      min={0}
+      max={5}
+      step={1}
+      valueLabelDisplay="on"
+    />
+    // <EditableValue text={exitDTE.value}>
+    //   <ExitToFrontExpirationChooser />
+    // </EditableValue>
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/EditableLookbackPeriod.tsx

@@ -0,0 +1,66 @@
+import TextField from "@mui/material/TextField";
+import {
+  refreshcalendarExitPriceChartData,
+  refreshSimilarCalendarPriceChartData,
+  refreshStockPriceChartData,
+} from "./actions";
+import { lookbackPeriodEnd, lookbackPeriodStart } from "./state";
+import Slider from "@mui/material/Slider";
+
+const handleLookbackPeriodChange = (
+  e,
+  [newLookbackPeriodStart, newLookbackPeriodEnd]: [number, number]
+) => {
+  const [lookbackPeriodStartUnixTime, lookbackPeriodEndUnixTime] = [
+    new Date(lookbackPeriodStart.value).getTime(),
+    new Date(lookbackPeriodEnd.value).getTime(),
+  ];
+  if (lookbackPeriodStartUnixTime !== newLookbackPeriodStart) {
+    lookbackPeriodStart.value = new Date(newLookbackPeriodStart)
+      .toISOString()
+      .substring(0, 10);
+    refreshStockPriceChartData();
+    refreshSimilarCalendarPriceChartData();
+    refreshcalendarExitPriceChartData();
+  }
+  if (lookbackPeriodEndUnixTime !== newLookbackPeriodEnd) {
+    lookbackPeriodEnd.value = new Date(newLookbackPeriodEnd)
+      .toISOString()
+      .substring(0, 10);
+    refreshStockPriceChartData();
+    refreshSimilarCalendarPriceChartData();
+    refreshcalendarExitPriceChartData();
+  }
+};
+
+const earliestDate = new Date("2022-03-07");
+const DAY = 1000 * 60 * 60 * 24;
+function addDays(date, days) {
+  const result = new Date(date);
+  result.setDate(result.getDate() + days);
+  return result.toISOString().substring(0, 10);
+}
+function daysBetween(date1, date2) {
+  return Math.round(Math.abs((date2.getTime() - date1.getTime()) / DAY));
+}
+export function EditableLookbackPeriod() {
+  return (
+    <Slider
+      value={[
+        new Date(lookbackPeriodStart.value).getTime(),
+        new Date(lookbackPeriodEnd.value).getTime(),
+      ]}
+      onChange={handleLookbackPeriodChange}
+      valueLabelFormat={(unixTimeMs) =>
+        new Date(unixTimeMs).toISOString().substring(0, 10)
+      }
+      getAriaValueText={(unixTimeMs) =>
+        new Date(unixTimeMs).toISOString().substring(0, 10)
+      }
+      min={earliestDate.getTime()}
+      max={earliestDate.getTime() + 250 * DAY}
+      step={DAY}
+      valueLabelDisplay="on"
+    />
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/EditableLookbackPeriodEnd.tsx

@@ -0,0 +1,38 @@
+import TextField from "@mui/material/TextField";
+import {
+  refreshcalendarExitPriceChartData,
+  refreshSimilarCalendarPriceChartData,
+  refreshStockPriceChartData,
+} from "./actions";
+import { lookbackPeriodEnd } from "./state";
+import { EditableValue } from "./EditableValue";
+
+const handleLookbackPeriodEndChange = (e) => {
+  if (lookbackPeriodEnd.value !== e.target.value) {
+    lookbackPeriodEnd.value = e.target.value;
+    refreshStockPriceChartData();
+    refreshSimilarCalendarPriceChartData();
+    refreshcalendarExitPriceChartData();
+  }
+};
+
+function LookbackPeriodEndChooser() {
+  return (
+    <TextField
+      fullWidth
+      label="Lookback Period End"
+      type="date"
+      value={lookbackPeriodEnd.value}
+      onChange={handleLookbackPeriodEndChange}
+      InputLabelProps={{ shrink: true }}
+    />
+  );
+}
+
+export function EditableLookbackPeriodEnd() {
+  return (
+    <EditableValue text={lookbackPeriodEnd.value}>
+      <LookbackPeriodEndChooser />
+    </EditableValue>
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/EditableLookbackPeriodStart.tsx

@@ -0,0 +1,38 @@
+import TextField from "@mui/material/TextField";
+import {
+  refreshcalendarExitPriceChartData,
+  refreshSimilarCalendarPriceChartData,
+  refreshStockPriceChartData,
+} from "./actions";
+import { lookbackPeriodStart } from "./state";
+import { EditableValue } from "./EditableValue";
+
+const handleLookbackPeriodStartChange = (e) => {
+  if (lookbackPeriodStart.value !== e.target.value) {
+    lookbackPeriodStart.value = e.target.value;
+    refreshStockPriceChartData();
+    refreshSimilarCalendarPriceChartData();
+    refreshcalendarExitPriceChartData();
+  }
+};
+
+function LookbackPeriodStartChooser() {
+  return (
+    <TextField
+      fullWidth
+      label="Lookback Period Start"
+      type="date"
+      value={lookbackPeriodStart.value}
+      onChange={handleLookbackPeriodStartChange}
+      InputLabelProps={{ shrink: true }}
+    />
+  );
+}
+
+export function EditableLookbackPeriodStart() {
+  return (
+    <EditableValue text={lookbackPeriodStart.value}>
+      <LookbackPeriodStartChooser />
+    </EditableValue>
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/EditableOpenDTE.tsx

@@ -0,0 +1,26 @@
+import { refreshSimilarCalendarPriceChartData } from "./actions";
+import { openDTE } from "./state";
+import Slider from "@mui/material/Slider";
+
+const handleOpenDTEChange = (e) => {
+  if (openDTE.value !== Number.parseInt(e.target.value)) {
+    openDTE.value = Number.parseInt(e.target.value);
+    refreshSimilarCalendarPriceChartData();
+  }
+};
+
+export function EditableOpenDTE() {
+  return (
+    <Slider
+      value={openDTE.value}
+      onChange={handleOpenDTEChange}
+      min={0}
+      max={5}
+      step={1}
+      valueLabelDisplay="on"
+    />
+    // <EditableValue text={openDTE.value}>
+    //   <DaysToFrontExpirationChooser />
+    // </EditableValue>
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/EditableSpan.tsx

@@ -0,0 +1,45 @@
+import TextField from "@mui/material/TextField";
+import {
+  refreshcalendarExitPriceChartData,
+  refreshSimilarCalendarPriceChartData,
+} from "./actions";
+import { span } from "./state";
+import { EditableValue } from "./EditableValue";
+import Slider from "@mui/material/Slider";
+
+const handleSpanChange = (e) => {
+  if (span.value !== Number.parseInt(e.target.value)) {
+    span.value = Number.parseInt(e.target.value);
+    refreshSimilarCalendarPriceChartData();
+    refreshcalendarExitPriceChartData();
+  }
+};
+
+function DaysBetweenFrontAndBackExpirationChooser() {
+  return (
+    <TextField
+      fullWidth
+      label="Front-to-Back-Month Days to Expiration Difference"
+      type="number"
+      value={span.value}
+      onChange={handleSpanChange}
+      InputProps={{ endAdornment: "Days Difference" }}
+    />
+  );
+}
+
+export function EditableSpan() {
+  return (
+    <Slider
+      value={span.value}
+      onChange={handleSpanChange}
+      min={3}
+      max={45}
+      step={1}
+      valueLabelDisplay="on"
+    />
+    // <EditableValue text={span.value}>
+    //   <DaysBetweenFrontAndBackExpirationChooser />
+    // </EditableValue>
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/EditableStrike.tsx

@@ -0,0 +1,65 @@
+import Box from "@mui/material/Box";
+import { EditableValue } from "./EditableValue";
+import { moniness, moninessRadius } from "./state";
+import Slider from "@mui/material/Slider";
+import { refreshSimilarCalendarPriceChartData } from "./actions";
+
+function MoninessChooser() {
+  return (
+    <Slider
+      fullWidth
+      label="Strike % From Underlying Price"
+      value={moniness.value}
+      valueLabelDisplay="on"
+      min={0}
+      max={10}
+      step={1}
+      onChange={(e, value) => {
+        moniness.value = value as number;
+      }}
+      onChangeCommitted={(e, value) => {
+        refreshSimilarCalendarPriceChartData();
+      }}
+      InputProps={{ endAdornment: "%" }}
+    />
+  );
+}
+
+function MoninessRadiusChooser() {
+  return (
+    <Slider
+      fullWidth
+      label="Strike % Radius"
+      value={moninessRadius.value}
+      valueLabelDisplay="on"
+      min={0}
+      max={10}
+      step={1}
+      onChange={(e, value) => {
+        moninessRadius.value = value as number;
+      }}
+      onChangeCommitted={(e, value) => {
+        refreshSimilarCalendarPriceChartData();
+      }}
+      InputProps={{ endAdornment: "%" }}
+    />
+  );
+}
+
+/** This is its own component so that sliding the slider with the mouse is
+ * smoother. Preact detects reads from the "slider" signal values, and
+ * associates them with the component that read them and redraws that component.
+ * If this was not its own component, it would redraw the entire UI. It was very
+ * slow. */
+export function EditableStrike() {
+  return (
+    <EditableValue
+      text={`${moniness.value.toFixed(1)}±${moninessRadius.value.toFixed(2)}`}
+    >
+      <Box sx={{ minWidth: "20em" }}>
+        <MoninessChooser />
+        <MoninessRadiusChooser />
+      </Box>
+    </EditableValue>
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/EditableUnderlying.tsx

@@ -0,0 +1,42 @@
+import Select from "@mui/material/Select";
+import { EditableValue } from "./EditableValue";
+import { availableUnderlyings, underlying } from "./state";
+import MenuItem from "@mui/material/MenuItem";
+import {
+  refreshcalendarExitPriceChartData,
+  refreshSimilarCalendarPriceChartData,
+  refreshStockPriceChartData,
+} from "./actions";
+
+const handleUnderlyingChange = (e) => {
+  if (underlying.value !== e.target.value) {
+    underlying.value = e.target.value;
+    refreshStockPriceChartData();
+    refreshSimilarCalendarPriceChartData();
+    refreshcalendarExitPriceChartData();
+  }
+};
+
+function UnderlyingChooser() {
+  return (
+    <Select
+      value={underlying.value || ""}
+      onChange={handleUnderlyingChange}
+      label="Available Underlyings"
+    >
+      {availableUnderlyings.value.map((underlying) => (
+        <MenuItem key={underlying} value={underlying}>
+          {underlying}
+        </MenuItem>
+      ))}
+    </Select>
+  );
+}
+
+export function EditableUnderlying() {
+  return (
+    <EditableValue text={underlying.value}>
+      <UnderlyingChooser />
+    </EditableValue>
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/EditableValue.tsx

@@ -0,0 +1,29 @@
+import Button from "@mui/material/Button";
+import { isPopperOpen, popperAnchorEl, popperContent } from "./state";
+
+export function EditableValue({ text, children }) {
+  return (
+    <Button
+      variant="text"
+      size="large"
+      sx={{
+        textDecoration: "underline",
+        textUnderlineOffset: "3px",
+        fontSize: "1.0em",
+      }}
+      onClick={(e) => {
+        // stop propagation so it's not caught by the ClickAwayListener:
+        e.stopPropagation();
+        if (isPopperOpen.value === false) {
+          isPopperOpen.value = true;
+          popperAnchorEl.value = e.currentTarget;
+          popperContent.value = children;
+        } else {
+          isPopperOpen.value = false;
+        }
+      }}
+    >
+      {text}
+    </Button>
+  );
+}

frontend/src/pages/HistoricalCalendarPrices/actions.ts

@@ -0,0 +1,81 @@
+import { trpc } from "../../trpc";
+import {
+  calendarExitPriceChartData,
+  span,
+  openDTE,
+  exitDTE,
+  lookbackPeriodEnd,
+  lookbackPeriodStart,
+  similarCalendarPriceChartData,
+  stockPriceChartData,
+  moniness,
+  moninessRadius,
+  underlying,
+} from "./state";
+
+function debounce(func, wait) {
+  let timeout;
+  return function () {
+    const context = this;
+    const args = arguments;
+    clearTimeout(timeout);
+    timeout = setTimeout(() => func.apply(context, args), wait);
+  };
+}
+function throttle(func, limit) {
+  let inThrottle;
+  return function () {
+    const context = this;
+    const args = arguments;
+    if (!inThrottle) {
+      func.apply(context, args);
+      inThrottle = true;
+      setTimeout(() => (inThrottle = false), limit);
+    }
+  };
+}
+
+export const refreshStockPriceChartData = throttle(() => {
+  stockPriceChartData.value = [];
+  trpc.StockPriceChart.getChartData
+    .query({
+      underlying: underlying.value,
+      lookbackPeriodStart: lookbackPeriodStart.value,
+      lookbackPeriodEnd: lookbackPeriodEnd.value,
+    })
+    .then((getChartDataResponse) => {
+      stockPriceChartData.value = getChartDataResponse;
+    });
+}, 400);
+export const refreshSimilarCalendarPriceChartData = throttle(() => {
+  similarCalendarPriceChartData.value = [];
+  trpc.SimilarCalendarPriceChart.getChartData
+    .query({
+      underlying: underlying.value,
+      daysToFrontExpiration: openDTE.value,
+      daysBetweenFrontAndBackExpiration: span.value,
+      strikePercentageFromUnderlyingPriceRangeMin:
+        (moniness.value - moninessRadius.value) / 100,
+      strikePercentageFromUnderlyingPriceRangeMax:
+        (moniness.value + moninessRadius.value) / 100,
+      lookbackPeriodStart: lookbackPeriodStart.value,
+      lookbackPeriodEnd: lookbackPeriodEnd.value,
+    })
+    .then((getChartDataResponse) => {
+      similarCalendarPriceChartData.value = getChartDataResponse;
+    });
+}, 400);
+export const refreshcalendarExitPriceChartData = throttle(() => {
+  calendarExitPriceChartData.value = [];
+  trpc.CalendarExitPriceChart.getChartData
+    .query({
+      underlying: underlying.value,
+      daysToFrontExpiration: exitDTE.value,
+      daysBetweenFrontAndBackExpiration: span.value,
+      lookbackPeriodStart: lookbackPeriodStart.value,
+      lookbackPeriodEnd: lookbackPeriodEnd.value,
+    })
+    .then((getChartDataResponse) => {
+      calendarExitPriceChartData.value = getChartDataResponse;
+    });
+}, 400);

frontend/src/pages/HistoricalCalendarPrices/state.ts

@@ -0,0 +1,46 @@
+import { computed, signal } from "@preact/signals";
+
+export const isPopperOpen = signal(false);
+export const popperAnchorEl = signal(null);
+export const popperContent = signal(null);
+
+export const availableUnderlyings = signal([]);
+export const underlying = signal(null);
+
+export const openDTE = signal(14);
+
+export const span = signal(14);
+
+export const moniness = signal(1);
+export const moninessRadius = signal(1);
+
+export const exitDTE = signal(2);
+
+export const stockPriceChartData = signal<Array<[number, number]>>([]);
+
+export const similarCalendarPriceChartData = signal([]);
+
+export const calendarExitPriceChartData = signal([]);
+
+export const lookbackPeriodStart = signal("2022-03-01");
+export const lookbackPeriodEnd = signal("2022-04-01");
+
+export const maxChartPrice = computed(() =>
+  Math.max(
+    Math.max.apply(
+      null,
+      similarCalendarPriceChartData.value.map((d) => d.y).slice(0, -2)
+    ),
+    Math.max.apply(
+      null,
+      calendarExitPriceChartData.value.map((d) => d.y).slice(0, -2)
+    )
+  )
+);
+
+export const maxN = computed(() =>
+  Math.max.apply(
+    null,
+    calendarExitPriceChartData.value.map((d) => d.n)
+  )
+);

frontend/tailwind.config.js

@@ -1,13 +0,0 @@
-/** @type {import('tailwindcss').Config} */
-export default {
-  content: ["./index.html", "./src/**/*.{js,ts,jsx,tsx}"],
-  theme: {
-    extend: {
-      width: {
-        128: "32rem",
-        160: "40rem",
-      },
-    },
-  },
-  plugins: [],
-};

package.json

@@ -0,0 +1,5 @@
+{
+	"devDependencies": {
+		"@biomejs/biome": "^1.8.3"
+	}
+}

pnpm-lock.yaml

@@ -0,0 +1,105 @@
+lockfileVersion: '9.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+importers:
+
+  .:
+    devDependencies:
+      '@biomejs/biome':
+        specifier: ^1.8.3
+        version: 1.8.3
+
+packages:
+
+  '@biomejs/biome@1.8.3':
+    resolution: {integrity: sha512-/uUV3MV+vyAczO+vKrPdOW0Iaet7UnJMU4bNMinggGJTAnBPjCoLEYcyYtYHNnUNYlv4xZMH6hVIQCAozq8d5w==}
+    engines: {node: '>=14.21.3'}
+    hasBin: true
+
+  '@biomejs/cli-darwin-arm64@1.8.3':
+    resolution: {integrity: sha512-9DYOjclFpKrH/m1Oz75SSExR8VKvNSSsLnVIqdnKexj6NwmiMlKk94Wa1kZEdv6MCOHGHgyyoV57Cw8WzL5n3A==}
+    engines: {node: '>=14.21.3'}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@biomejs/cli-darwin-x64@1.8.3':
+    resolution: {integrity: sha512-UeW44L/AtbmOF7KXLCoM+9PSgPo0IDcyEUfIoOXYeANaNXXf9mLUwV1GeF2OWjyic5zj6CnAJ9uzk2LT3v/wAw==}
+    engines: {node: '>=14.21.3'}
+    cpu: [x64]
+    os: [darwin]
+
+  '@biomejs/cli-linux-arm64-musl@1.8.3':
+    resolution: {integrity: sha512-9yjUfOFN7wrYsXt/T/gEWfvVxKlnh3yBpnScw98IF+oOeCYb5/b/+K7YNqKROV2i1DlMjg9g/EcN9wvj+NkMuQ==}
+    engines: {node: '>=14.21.3'}
+    cpu: [arm64]
+    os: [linux]
+
+  '@biomejs/cli-linux-arm64@1.8.3':
+    resolution: {integrity: sha512-fed2ji8s+I/m8upWpTJGanqiJ0rnlHOK3DdxsyVLZQ8ClY6qLuPc9uehCREBifRJLl/iJyQpHIRufLDeotsPtw==}
+    engines: {node: '>=14.21.3'}
+    cpu: [arm64]
+    os: [linux]
+
+  '@biomejs/cli-linux-x64-musl@1.8.3':
+    resolution: {integrity: sha512-UHrGJX7PrKMKzPGoEsooKC9jXJMa28TUSMjcIlbDnIO4EAavCoVmNQaIuUSH0Ls2mpGMwUIf+aZJv657zfWWjA==}
+    engines: {node: '>=14.21.3'}
+    cpu: [x64]
+    os: [linux]
+
+  '@biomejs/cli-linux-x64@1.8.3':
+    resolution: {integrity: sha512-I8G2QmuE1teISyT8ie1HXsjFRz9L1m5n83U1O6m30Kw+kPMPSKjag6QGUn+sXT8V+XWIZxFFBoTDEDZW2KPDDw==}
+    engines: {node: '>=14.21.3'}
+    cpu: [x64]
+    os: [linux]
+
+  '@biomejs/cli-win32-arm64@1.8.3':
+    resolution: {integrity: sha512-J+Hu9WvrBevfy06eU1Na0lpc7uR9tibm9maHynLIoAjLZpQU3IW+OKHUtyL8p6/3pT2Ju5t5emReeIS2SAxhkQ==}
+    engines: {node: '>=14.21.3'}
+    cpu: [arm64]
+    os: [win32]
+
+  '@biomejs/cli-win32-x64@1.8.3':
+    resolution: {integrity: sha512-/PJ59vA1pnQeKahemaQf4Nyj7IKUvGQSc3Ze1uIGi+Wvr1xF7rGobSrAAG01T/gUDG21vkDsZYM03NAmPiVkqg==}
+    engines: {node: '>=14.21.3'}
+    cpu: [x64]
+    os: [win32]
+
+snapshots:
+
+  '@biomejs/biome@1.8.3':
+    optionalDependencies:
+      '@biomejs/cli-darwin-arm64': 1.8.3
+      '@biomejs/cli-darwin-x64': 1.8.3
+      '@biomejs/cli-linux-arm64': 1.8.3
+      '@biomejs/cli-linux-arm64-musl': 1.8.3
+      '@biomejs/cli-linux-x64': 1.8.3
+      '@biomejs/cli-linux-x64-musl': 1.8.3
+      '@biomejs/cli-win32-arm64': 1.8.3
+      '@biomejs/cli-win32-x64': 1.8.3
+
+  '@biomejs/cli-darwin-arm64@1.8.3':
+    optional: true
+
+  '@biomejs/cli-darwin-x64@1.8.3':
+    optional: true
+
+  '@biomejs/cli-linux-arm64-musl@1.8.3':
+    optional: true
+
+  '@biomejs/cli-linux-arm64@1.8.3':
+    optional: true
+
+  '@biomejs/cli-linux-x64-musl@1.8.3':
+    optional: true
+
+  '@biomejs/cli-linux-x64@1.8.3':
+    optional: true
+
+  '@biomejs/cli-win32-arm64@1.8.3':
+    optional: true
+
+  '@biomejs/cli-win32-x64@1.8.3':
+    optional: true

server/.gitignore

@@ -25,3 +25,6 @@ dist-ssr
 *.sw?
 
 .env
+*.db
+*.db-lck
+Calendar tRPC

server/Dockerfile

@@ -2,22 +2,27 @@
 FROM node:20-slim AS base
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
-RUN corepack enable
+RUN npm install -g corepack@latest && corepack enable
 COPY package.json pnpm-lock.yaml /app/
 WORKDIR /app
 
-FROM base AS prod-deps
-RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile
-
-# install dev dependencies which are needed for building, such as typescript:
-FROM base AS build
 RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
 COPY tsconfig.json /app/
 COPY src /app/src
-RUN pnpm run build
+CMD [ "pnpm", "tsx", "src/index.ts" ] 
 
-FROM base
-COPY --from=prod-deps /app/node_modules /app/node_modules
-COPY --from=build /app/dist /app/dist
-WORKDIR /app/dist
-CMD [ "node", "index.js" ]
+# FROM base AS prod-deps
+# RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile
+
+# # install dev dependencies which are needed for building, such as typescript:
+# FROM base AS build
+# RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
+# COPY tsconfig.json /app/
+# COPY src /app/src
+# RUN pnpm run build
+
+# FROM base
+# COPY --from=prod-deps /app/node_modules /app/node_modules
+# COPY --from=build /app/dist /app/dist
+# WORKDIR /app/dist
+# CMD [ "node", "index.js" ]

server/TODO.md

@@ -0,0 +1,2 @@
+- Ingest stock/underlying aggregates from flatfiles
+- Create backtesting function to step through each minute of every day.

server/lmdbx-range-test.mjs

@@ -0,0 +1,17 @@
+import { open } from 'lmdbx'; // or require
+
+const MAXIMUM_KEY = Buffer.from([0xff]);
+
+// or in deno: import { open } from 'https://deno.land/x/lmdbx/mod.ts';
+const myDB = open({
+	path: '/tmp/my.db',
+	// any options go here, we can turn on compression like this:
+	compression: true,
+});
+await myDB.put(["a","b"], "ab");
+await myDB.put(["a","c"], "ac");
+await myDB.put(["a","d"], "ad");
+await myDB.put(["b","a"], "ba");
+await myDB.put(["b","c"], "bc");
+
+console.log(Array.from(myDB.getRange({start: ["a"], end: ["a", MAXIMUM_KEY]}).asArray))

server/package.json

@@ -2,31 +2,39 @@
 	"private": true,
 	"type": "module",
 	"scripts": {
-		"build": "esbuild src/*.ts src/**/*.ts --platform=node --outdir=dist --format=esm",
+		"build": "esbuild src/*.ts src/*.tsx src/**/*.ts src/**/**/*.ts --platform=node --outdir=dist --format=esm",
 		"dev:node": "node --watch dist/index.js",
 		"dev:esbuild": "pnpm run build --watch",
-		"dev": "run-p dev:*"
+		"dev": "run-p dev:*",
+		"cli": "tsx src/cli.tsx"
 	},
 	"dependencies": {
-		"@clickhouse/client": "^0.2.7",
+		"@clickhouse/client": "^1.4.1",
 		"@humanwhocodes/env": "^3.0.5",
 		"@sinclair/typebox": "^0.32.5",
 		"@trpc/server": "^10.45.0",
 		"cors": "^2.8.5",
+		"date-fns": "^3.6.0",
 		"execa": "^9.3.0",
+		"ink": "^4.1.0",
+		"ink-text-input": "^5.0.1",
+		"lmdbx": "^0.5.0",
 		"p-all": "^5.0.0",
 		"p-queue": "^8.0.1",
 		"p-retry": "^6.2.0",
 		"p-series": "^3.0.0",
 		"p-throttle": "^6.1.0",
+		"react": "^18.2.0",
 		"sqlite": "^5.1.1",
 		"sqlite3": "^5.1.7"
 	},
 	"devDependencies": {
 		"@types/cors": "^2.8.17",
 		"@types/node": "^20.10.7",
+		"@types/react": "^18.0.0",
 		"esbuild": "^0.19.11",
 		"npm-run-all": "^4.1.5",
+		"tsx": "^4.17.0",
 		"typescript": "^5.3.3"
 	}
 }

server/src/AggregateDatabase/Calendar/clickhouse.ts

@@ -0,0 +1,191 @@
+import type { CalendarDatabase, CalendarKey } from "./interfaces.js";
+import type { Aggregate } from "../interfaces.js";
+import { query } from "../../lib/clickhouse.js";
+
+function makeCalendarDatabase(): CalendarDatabase {
+  const calendarDatabase: Omit<CalendarDatabase, "getCalendars"> = {
+    getKeys: async ({ key: { symbol }, date }) => {
+      const calendarsForSymbolOnDate = await query<
+        Omit<CalendarKey, "symbol">
+      >(`
+				WITH today_option_contracts AS (
+					SELECT expirationDate, strike, type
+					FROM option_contract_existences
+					WHERE symbol = '${symbol}'
+					AND asOfDate = '${date}'
+				)
+				SELECT 
+					front_option_contract.type as type,
+					front_option_contract.strike as strike, 
+					front_option_contract.expirationDate as frontExpirationDate, 
+					back_option_contract.expirationDate as backExpirationDate
+				FROM today_option_contracts AS front_option_contract
+				ASOF INNER JOIN today_option_contracts AS back_option_contract
+				ON front_option_contract.type = back_option_contract.type
+				AND front_option_contract.strike = back_option_contract.strike
+				AND front_option_contract.expirationDate < back_option_contract.expirationDate
+				`);
+
+      return calendarsForSymbolOnDate.map((calendarWithoutSymbol) => ({
+        ...calendarWithoutSymbol,
+        symbol,
+      }));
+    },
+    getAggregate: async ({
+      key: { symbol, frontExpirationDate, backExpirationDate, strike, type },
+      tsStart,
+    }) => {
+      const tsStartString = new Date(tsStart).toISOString();
+      return (
+        await query<Omit<Aggregate<CalendarKey>, "key">>(`
+				WITH front_option_contract_candlestick AS (
+					SELECT
+						tsStart,
+						open,
+						close,
+						high,
+						low
+					FROM option_contract_aggregates
+					WHERE symbol = '${symbol}'
+					AND type = '${type}'
+					AND strike = '${strike}'
+					AND expirationDate = '${frontExpirationDate}'
+					AND tsStart = '${tsStartString}'
+				),
+				back_option_contract_candlestick AS (
+					SELECT
+						tsStart,
+						open,
+						close,
+						high,
+						low
+					FROM option_contract_aggregates
+					WHERE symbol = '${symbol}'
+					AND type = '${type}'
+					AND strike = '${strike}'
+					AND expirationDate = '${backExpirationDate}'
+					AND tsStart = '${tsStartString}'
+				)
+				SELECT
+						toUnixTimestamp(front_option_contract_candlestick.tsStart) as tsStart,
+						back_option_contract_candlestick.open - front_option_contract_candlestick.open as open,
+						back_option_contract_candlestick.close - front_option_contract_candlestick.close as close
+				FROM front_option_contract_candlestick
+				INNER JOIN back_option_contract_candlestick
+				ON front_option_contract_candlestick.tsStart = back_option_contract_candlestick.tsStart
+				ORDER BY front_option_contract_candlestick.tsStart ASC
+			`)
+      ).map((aggregate) => ({
+        ...aggregate,
+        tsStart: aggregate.tsStart * 1000, // unfortunately, `toUnixTimestamp` only returns second-precision
+      }))[0];
+    },
+    getAggregates: async ({
+      key: { symbol, frontExpirationDate, backExpirationDate, strike, type },
+      date,
+    }) => {
+      return (
+        await query<Omit<Aggregate<CalendarKey>, "key">>(`
+				WITH front_option_contract_candlestick AS (
+					SELECT
+						tsStart,
+						open,
+						close,
+						high,
+						low
+					FROM option_contract_aggregates
+					WHERE symbol = '${symbol}'
+					AND type = '${type}'
+					AND strike = '${strike}'
+					AND expirationDate = '${frontExpirationDate}'
+					AND toDate(tsStart) = '${date}'
+				),
+				back_option_contract_candlestick AS (
+					SELECT
+						tsStart,
+						open,
+						close,
+						high,
+						low
+					FROM option_contract_aggregates
+					WHERE symbol = '${symbol}'
+					AND type = '${type}'
+					AND strike = '${strike}'
+					AND expirationDate = '${backExpirationDate}'
+					AND toDate(tsStart) = '${date}'
+				)
+				SELECT
+						toUnixTimestamp(front_option_contract_candlestick.tsStart) as tsStart,
+						back_option_contract_candlestick.open - front_option_contract_candlestick.open as open,
+						back_option_contract_candlestick.close - front_option_contract_candlestick.close as close
+				FROM front_option_contract_candlestick
+				INNER JOIN back_option_contract_candlestick
+				ON front_option_contract_candlestick.tsStart = back_option_contract_candlestick.tsStart
+				ORDER BY front_option_contract_candlestick.tsStart ASC
+			`)
+      ).map((aggregate) => ({
+        ...aggregate,
+        tsStart: aggregate.tsStart * 1000, // unfortunately, `toUnixTimestamp` only returns second-precision
+      }));
+    },
+    insertAggregates: async (aggregates) => {
+      // no-op: we insert individual option contracts, not calendars
+    },
+    getClosingPrice: async ({
+      key: { symbol, strike, type, frontExpirationDate, backExpirationDate },
+    }) => {
+      return (
+        await query<{ calendarClosingPrice: number }>(`
+					WITH front_option_contract_candlestick AS (
+						SELECT
+								tsStart,
+								open,
+								close,
+								high,
+								low
+						FROM option_contract_aggregates
+						WHERE symbol = '${symbol}'
+						AND type = '${type}'
+						AND strike = '${strike}'
+						AND expirationDate = '${frontExpirationDate}'
+						AND toDate(tsStart) = '${frontExpirationDate}'
+					),
+					back_option_contract_candlestick AS (
+						SELECT
+								tsStart,
+								open,
+								close,
+								high,
+								low
+						FROM option_contract_aggregates
+						WHERE symbol = '${symbol}'
+						AND type = '${type}'
+						AND strike = '${strike}'
+						AND expirationDate = '${backExpirationDate}'
+						AND toDate(tsStart) = '${frontExpirationDate}'
+					)
+					SELECT
+						min(back_option_contract_candlestick.close - front_option_contract_candlestick.close) as calendarClosingPrice
+					FROM front_option_contract_candlestick
+					INNER JOIN back_option_contract_candlestick
+					ON front_option_contract_candlestick.tsStart = back_option_contract_candlestick.tsStart
+				`)
+      )[0]?.calendarClosingPrice;
+    },
+    getTargetPriceByProbability: async ({
+      symbol,
+      calendarSpan,
+      strikePercentageFromTheMoney,
+      historicalProbabilityOfSuccess,
+    }) => {
+      return 0.24;
+    },
+  };
+
+  return {
+    ...calendarDatabase,
+    getCalendars: calendarDatabase.getKeys,
+  };
+}
+
+export const database: CalendarDatabase = makeCalendarDatabase();

server/src/AggregateDatabase/Calendar/interfaces.ts

@@ -0,0 +1,24 @@
+import type { AggregateDatabase } from "../interfaces.js";
+
+export type CalendarKey = {
+  symbol: string;
+  type: "call" | "put";
+  strike: number;
+  frontExpirationDate: string;
+  backExpirationDate: string;
+};
+
+export type CalendarDatabase = AggregateDatabase<CalendarKey> & {
+  getCalendars: AggregateDatabase<CalendarKey>["getKeys"];
+  getTargetPriceByProbability: ({
+    symbol,
+    calendarSpan,
+    strikePercentageFromTheMoney,
+    historicalProbabilityOfSuccess,
+  }: {
+    symbol: string;
+    calendarSpan: number;
+    strikePercentageFromTheMoney: number;
+    historicalProbabilityOfSuccess: number;
+  }) => Promise<number>;
+};

server/src/AggregateDatabase/Calendar/lmdbx.ts

@@ -0,0 +1,166 @@
+import type { CalendarDatabase } from "./interfaces.js";
+import { open } from "lmdbx";
+
+const calendarAggregatesDb = open({
+  path: "./calendar-aggregates.db",
+  compression: true,
+});
+
+const calendarExistenceDb = open({
+  path: "./calendar-existence.db",
+  compression: true,
+});
+
+/** Largest possible key according to the `ordered-binary` (used by lmdbx) docs. */
+const MAXIMUM_KEY = Buffer.from([0xff]);
+
+function makeCalendarDatabase(): CalendarDatabase {
+  const calendarDatabase: Omit<CalendarDatabase, "getCalendars"> = {
+    getKeys: async ({ key: { symbol }, date }) => {
+      return calendarExistenceDb
+        .getRange({
+          start: [date, symbol],
+          end: [date, symbol, MAXIMUM_KEY],
+        })
+        .map(({ key }) => ({
+          symbol,
+          frontExpirationDate: key[2],
+          backExpirationDate: key[3],
+          strike: key[4],
+          type: key[5],
+        })).asArray;
+    },
+    getAggregates: async ({
+      key: { symbol, frontExpirationDate, backExpirationDate, strike, type },
+      date,
+    }) => {
+      const startOfDayUnix = new Date(`${date}T00:00:00Z`).valueOf();
+      const endOfDayUnix = startOfDayUnix + 3600 * 24 * 1000;
+      return calendarAggregatesDb
+        .getRange({
+          start: [
+            symbol,
+            frontExpirationDate,
+            backExpirationDate,
+            strike,
+            type,
+            startOfDayUnix,
+          ],
+          end: [
+            symbol,
+            frontExpirationDate,
+            backExpirationDate,
+            strike,
+            type,
+            endOfDayUnix,
+          ],
+        })
+        .map(({ value }) => ({
+          tsStart: value.tsStart,
+          open: value.open,
+          close: value.close,
+          high: value.high,
+          low: value.low,
+        })).asArray;
+    },
+    getAggregate: async ({
+      key: { symbol, frontExpirationDate, backExpirationDate, strike, type },
+      tsStart,
+    }) => {
+      return await calendarAggregatesDb.get([
+        symbol,
+        frontExpirationDate,
+        backExpirationDate,
+        strike,
+        type,
+        tsStart,
+      ]);
+    },
+    insertAggregates: async (aggregates) => {
+      await calendarExistenceDb.batch(() => {
+        for (const aggregate of aggregates) {
+          calendarExistenceDb.put(
+            [
+              new Date(aggregate.tsStart).toISOString().substring(0, 10),
+              aggregate.key.symbol,
+              aggregate.key.frontExpirationDate,
+              aggregate.key.backExpirationDate,
+              aggregate.key.strike,
+              aggregate.key.type,
+            ],
+            null
+          );
+        }
+      });
+      await calendarAggregatesDb.batch(() => {
+        for (const aggregate of aggregates) {
+          calendarAggregatesDb.put(
+            [
+              aggregate.key.symbol,
+              aggregate.key.frontExpirationDate,
+              aggregate.key.backExpirationDate,
+              aggregate.key.strike,
+              aggregate.key.type,
+              aggregate.tsStart,
+            ],
+            {
+              open: aggregate.open,
+              close: aggregate.close,
+              high: aggregate.high,
+              low: aggregate.low,
+            }
+          );
+        }
+      });
+    },
+    getClosingPrice: async ({
+      key: { symbol, strike, type, frontExpirationDate, backExpirationDate },
+    }) => {
+      const startOfExpirationDateUnix = new Date(
+        `${frontExpirationDate}T23:59:59Z`
+      ).valueOf();
+      const endOfExpirationDateUnix = new Date(
+        `${frontExpirationDate}T00:00:00Z`
+      ).valueOf();
+      for (const { value } of calendarAggregatesDb.getRange({
+        start: [
+          symbol,
+          frontExpirationDate,
+          backExpirationDate,
+          strike,
+          type,
+          startOfExpirationDateUnix,
+        ],
+        end: [
+          symbol,
+          frontExpirationDate,
+          backExpirationDate,
+          strike,
+          type,
+          endOfExpirationDateUnix,
+        ],
+        reverse: true,
+      })) {
+        if (value.close > 0) {
+          return value.close;
+        }
+      }
+      return 0;
+    },
+    getTargetPriceByProbability: async ({
+      symbol,
+      calendarSpan,
+      strikePercentageFromTheMoney,
+      historicalProbabilityOfSuccess,
+    }) => {
+      return 0.24;
+    },
+  };
+
+  return {
+    ...calendarDatabase,
+    getCalendars: calendarDatabase.getKeys,
+  };
+}
+
+export const database: CalendarDatabase = makeCalendarDatabase();

server/src/AggregateDatabase/Calendar/optiondb-lmdbx.ts

@@ -0,0 +1,207 @@
+import { database as optionContractDatabase } from "../OptionContract/lmdbx.js";
+import type { CalendarDatabase } from "./interfaces.js";
+
+/** Largest possible key according to the `ordered-binary` (used by lmdbx) docs. */
+const MAXIMUM_KEY = Buffer.from([0xff]);
+
+function makeCalendarDatabase(): CalendarDatabase {
+  const getAggregatesSync = ({
+    key: { symbol, frontExpirationDate, backExpirationDate, strike, type },
+    date,
+  }) => {
+    const frontOptionContractAggregates =
+      optionContractDatabase.getAggregatesSync({
+        date,
+        key: { symbol, expirationDate: frontExpirationDate, strike, type },
+      });
+    const backOptionContractAggregates =
+      optionContractDatabase.getAggregatesSync({
+        date,
+        key: { symbol, expirationDate: backExpirationDate, strike, type },
+      });
+    const calendarAggregates = [];
+    let i = 0;
+    let j = 0;
+    while (
+      i < frontOptionContractAggregates.length &&
+      j < backOptionContractAggregates.length
+    ) {
+      if (
+        frontOptionContractAggregates[i].tsStart ===
+        backOptionContractAggregates[j].tsStart
+      ) {
+        calendarAggregates.push({
+          tsStart: frontOptionContractAggregates[i].tsStart,
+          open:
+            backOptionContractAggregates[j].open -
+            frontOptionContractAggregates[i].open,
+          close:
+            backOptionContractAggregates[j].close -
+            frontOptionContractAggregates[i].close,
+          // the high and low are not exactly correct since we don't know if each contract's high and low happened at the same moment as the other:
+          high:
+            backOptionContractAggregates[j].high -
+            frontOptionContractAggregates[i].high,
+          low:
+            backOptionContractAggregates[j].low -
+            frontOptionContractAggregates[i].low,
+        });
+        i++;
+        j++;
+      } else if (
+        frontOptionContractAggregates[i].tsStart >
+        backOptionContractAggregates[j].tsStart
+      ) {
+        j++;
+      } else {
+        i++;
+      }
+    }
+    return calendarAggregates;
+  };
+  const calendarDatabase: Omit<CalendarDatabase, "getCalendars"> = {
+    getKeys: async ({ key: { symbol }, date }) => {
+      const optionContracts = await optionContractDatabase.getOptionContracts({
+        date,
+        key: { symbol },
+      });
+      return optionContracts.flatMap(
+        (frontOptionContract, i, optionContracts) =>
+          optionContracts
+            .filter(
+              (potientialBackOptionContract) =>
+                frontOptionContract.strike ===
+                  potientialBackOptionContract.strike &&
+                frontOptionContract.type ===
+                  potientialBackOptionContract.type &&
+                frontOptionContract.expirationDate <
+                  potientialBackOptionContract.expirationDate
+            )
+            .map((backOptionContract) => ({
+              symbol,
+              frontExpirationDate: frontOptionContract.expirationDate,
+              backExpirationDate: backOptionContract.expirationDate,
+              strike: frontOptionContract.strike,
+              type: frontOptionContract.type,
+            }))
+      );
+    },
+    getAggregates: async ({
+      key: { symbol, frontExpirationDate, backExpirationDate, strike, type },
+      date,
+    }) =>
+      getAggregatesSync({
+        key: { symbol, frontExpirationDate, backExpirationDate, strike, type },
+        date,
+      }),
+    getAggregatesSync,
+    insertAggregates: async (aggregates) => {
+      // right now, no-op
+    },
+    getClosingPrice: async ({
+      key: { symbol, strike, type, frontExpirationDate, backExpirationDate },
+    }) => {
+      // get unix timestamp, in milliseconds, of the start of the last hour, which is 03:30PM in the `America/New_York` timezone on the front expiration date:
+      const startOfLastHourUnix = new Date(
+        `${frontExpirationDate}T19:30:00Z`
+      ).getTime();
+      const endOfLastHourUnix = startOfLastHourUnix + 3600 * 1000;
+      const frontOptionContractAggregates = (
+        await optionContractDatabase.getAggregates({
+          date: frontExpirationDate,
+          key: { symbol, expirationDate: frontExpirationDate, strike, type },
+        })
+      ).filter(
+        ({ tsStart }) =>
+          tsStart >= startOfLastHourUnix && tsStart < endOfLastHourUnix
+      );
+      const backOptionContractAggregates = (
+        await optionContractDatabase.getAggregates({
+          date: frontExpirationDate,
+          key: { symbol, expirationDate: backExpirationDate, strike, type },
+        })
+      ).filter(
+        ({ tsStart }) =>
+          tsStart >= startOfLastHourUnix && tsStart < endOfLastHourUnix
+      );
+      let i = 0;
+      let j = 0;
+      let minPrice = 0;
+      while (
+        i < frontOptionContractAggregates.length &&
+        j < backOptionContractAggregates.length
+      ) {
+        if (
+          frontOptionContractAggregates[i].tsStart ===
+          backOptionContractAggregates[j].tsStart
+        ) {
+          const calendarClosePrice =
+            backOptionContractAggregates[j].close -
+            frontOptionContractAggregates[i].close;
+          if (calendarClosePrice < minPrice || minPrice === 0) {
+            minPrice = calendarClosePrice;
+          }
+          i++;
+          j++;
+        } else if (
+          frontOptionContractAggregates[i].tsStart >
+          backOptionContractAggregates[j].tsStart
+        ) {
+          j++;
+        } else {
+          i++;
+        }
+      }
+      return minPrice;
+    },
+    getAggregate: async ({
+      key: { symbol, frontExpirationDate, backExpirationDate, strike, type },
+      tsStart,
+    }) => {
+      const [frontOptionContractAggregate, backOptionContractAggregate] =
+        await Promise.all([
+          optionContractDatabase.getAggregate({
+            key: { symbol, expirationDate: frontExpirationDate, strike, type },
+            tsStart,
+          }),
+          optionContractDatabase.getAggregate({
+            key: { symbol, expirationDate: backExpirationDate, strike, type },
+            tsStart,
+          }),
+        ]);
+      // only return the calendar aggregate if its constituent front and back option contract aggregates exist:
+      if (frontOptionContractAggregate && backOptionContractAggregate) {
+        return {
+          tsStart,
+          open:
+            backOptionContractAggregate.open -
+            frontOptionContractAggregate.open,
+          close:
+            backOptionContractAggregate.close -
+            frontOptionContractAggregate.close,
+          high:
+            backOptionContractAggregate.high -
+            frontOptionContractAggregate.high,
+          low:
+            backOptionContractAggregate.low - frontOptionContractAggregate.low,
+        };
+      }
+      return undefined;
+    },
+    getTargetPriceByProbability: async ({
+      symbol,
+      calendarSpan,
+      strikePercentageFromTheMoney,
+      historicalProbabilityOfSuccess,
+    }) => {
+      return 0.24;
+    },
+  };
+
+  return {
+    ...calendarDatabase,
+    getCalendars: calendarDatabase.getKeys,
+  };
+}
+
+export const database: CalendarDatabase = makeCalendarDatabase();

server/src/AggregateDatabase/OptionContract/clickhouse.ts

@@ -0,0 +1,114 @@
+import type {
+  OptionContractDatabase,
+  OptionContractKey,
+} from "./interfaces.js";
+import type { Aggregate } from "../interfaces.js";
+import { clickhouse, query } from "../../lib/clickhouse.js";
+
+function makeOptionContractDatabase(): OptionContractDatabase {
+  const optionContractDatabase: Omit<
+    OptionContractDatabase,
+    "getOptionContracts"
+  > = {
+    getKeys: async ({ key: { symbol }, date }) => {
+      return (
+        await query<Omit<OptionContractKey, "symbol">>(`
+          SELECT expirationDate, strike, type
+					FROM option_contract_existences
+					WHERE symbol = '${symbol}'
+					AND asOfDate = '${date}'
+        `)
+      ).map((optionContractWithoutKey) => ({
+        ...optionContractWithoutKey,
+        symbol,
+      }));
+    },
+    getAggregates: async ({
+      key: { symbol, expirationDate, strike, type },
+      date,
+    }) => {
+      return (
+        await query<Omit<Aggregate<OptionContractKey>, "key">>(`
+        SELECT
+						toUnixTimestamp(tsStart) as tsStart,
+						open,
+						close,
+						high,
+						low
+					FROM option_contract_aggregates
+					WHERE symbol = '${symbol}'
+					AND type = '${type}'
+					AND strike = '${strike}'
+					AND expirationDate = '${expirationDate}'
+					AND toDate(tsStart) = '${date}'
+        ORDER BY tsStart ASC
+      `)
+      ).map((aggregate) => ({
+        ...aggregate,
+        tsStart: aggregate.tsStart * 1000, // unfortunately, `toUnixTimestamp` only returns second-precision
+      }));
+    },
+    getAggregate: async ({
+      key: { symbol, expirationDate, strike, type },
+      tsStart,
+    }) => {
+      const tsStartString = new Date(tsStart).toISOString();
+      return (
+        await query<Omit<Aggregate<OptionContractKey>, "key">>(`
+          SELECT
+						open,
+						close,
+						high,
+						low
+					FROM option_contract_aggregates
+					WHERE symbol = '${symbol}'
+					AND type = '${type}'
+					AND strike = '${strike}'
+					AND expirationDate = '${expirationDate}'
+					AND tsStart = '${tsStartString}'
+          ORDER BY tsStart ASC
+        `)
+      ).map((aggregate) => ({
+        ...aggregate,
+        tsStart,
+      }))[0];
+    },
+    insertAggregates: async (aggregates) => {
+      // stock existence is taken care of by clickhouse materialized view
+      await clickhouse.insert({
+        table: "option_contract_aggregates",
+        values: aggregates.map(
+          ({
+            key: { symbol, expirationDate, strike, type },
+            tsStart,
+            open,
+            close,
+            high,
+            low,
+          }) => ({
+            symbol,
+            expirationDate,
+            strike,
+            type,
+            tsStart,
+            open,
+            close,
+            high,
+            low,
+          })
+        ),
+      });
+    },
+    getClosingPrice: async ({ key }) => {
+      // no-op: not used since stocks don't have a "closing" price, unlike options.
+      return 0;
+    },
+  };
+
+  return {
+    ...optionContractDatabase,
+    getOptionContracts: optionContractDatabase.getKeys,
+  };
+}
+
+export const database: OptionContractDatabase = makeOptionContractDatabase();

server/src/AggregateDatabase/OptionContract/interfaces.ts

@@ -0,0 +1,12 @@
+import type { AggregateDatabase } from "../interfaces.js";
+
+export type OptionContractKey = {
+  symbol: string;
+  expirationDate: string;
+  strike: number;
+  type: "call" | "put";
+};
+
+export type OptionContractDatabase = AggregateDatabase<OptionContractKey> & {
+  getOptionContracts: AggregateDatabase<OptionContractKey>["getKeys"];
+};

server/src/AggregateDatabase/OptionContract/lmdbx.ts

@@ -0,0 +1,138 @@
+import type { OptionContractDatabase } from "./interfaces.js";
+import { open } from "lmdbx";
+
+const optionContractAggregatesDb = open({
+  path: "./option-contract-aggregates.db",
+  // any options go here, we can turn on compression like this:
+  compression: true,
+});
+
+const optionContractExistenceDb = open({
+  path: "./option-contract-existence.db",
+  // any options go here, we can turn on compression like this:
+  compression: true,
+});
+
+/** Largest possible key according to the `ordered-binary` (used by lmdbx) docs. */
+const MAXIMUM_KEY = Buffer.from([0xff]);
+
+function makeOptionContractDatabase(): OptionContractDatabase {
+  const getAggregatesSync = ({
+    key: { symbol, expirationDate, strike, type },
+    date,
+  }) => {
+    const startOfDayUnix = new Date(`${date}T00:00:00Z`).valueOf();
+    const endOfDayUnix = startOfDayUnix + 3600 * 24 * 1000;
+    return optionContractAggregatesDb
+      .getRange({
+        start: [symbol, expirationDate, strike, type, startOfDayUnix],
+        end: [symbol, expirationDate, strike, type, endOfDayUnix],
+      })
+      .map(({ key, value }) => ({
+        tsStart: key[4],
+        open: value.open,
+        close: value.close,
+        high: value.high,
+        low: value.low,
+      })).asArray;
+  };
+  const optionContractDatabase: Omit<
+    OptionContractDatabase,
+    "getOptionContracts"
+  > = {
+    getKeys: async ({ key: { symbol }, date }) => {
+      return optionContractExistenceDb
+        .getRange({
+          start: [date, symbol],
+          end: [date, symbol, MAXIMUM_KEY],
+        })
+        .map(({ key }) => ({
+          symbol,
+          expirationDate: key[2],
+          strike: key[3],
+          type: key[4],
+        })).asArray;
+    },
+    getAggregatesSync,
+    getAggregates: async ({
+      key: { symbol, expirationDate, strike, type },
+      date,
+    }) =>
+      getAggregatesSync({
+        key: { symbol, expirationDate, strike, type },
+        date,
+      }),
+    insertAggregates: async (aggregates) => {
+      await optionContractExistenceDb.batch(() => {
+        for (const aggregate of aggregates) {
+          optionContractExistenceDb.put(
+            [
+              new Date(aggregate.tsStart).toISOString().substring(0, 10),
+              aggregate.key.symbol,
+              aggregate.key.expirationDate,
+              aggregate.key.strike,
+              aggregate.key.type,
+            ],
+            null
+          );
+        }
+      });
+      await optionContractAggregatesDb.batch(() => {
+        for (const aggregate of aggregates) {
+          optionContractAggregatesDb.put(
+            [
+              aggregate.key.symbol,
+              aggregate.key.expirationDate,
+              aggregate.key.strike,
+              aggregate.key.type,
+              aggregate.tsStart,
+            ],
+            {
+              open: aggregate.open,
+              close: aggregate.close,
+              high: aggregate.high,
+              low: aggregate.low,
+            }
+          );
+        }
+      });
+    },
+    getClosingPrice: async ({
+      key: { symbol, strike, type, expirationDate },
+    }) => {
+      const startOfLastHourUnix = new Date(
+        `${expirationDate}T00:00:00Z`
+      ).valueOf();
+      const endOfLastHourUnix = startOfLastHourUnix + 3600 * 1000;
+      let minPrice = 0;
+      for (const { value } of optionContractAggregatesDb.getRange({
+        start: [symbol, expirationDate, strike, type, startOfLastHourUnix],
+        end: [symbol, expirationDate, strike, type, endOfLastHourUnix],
+      })) {
+        if (value.close < minPrice || minPrice === 0) {
+          minPrice = value.close;
+        }
+      }
+      return minPrice;
+    },
+    getAggregate: async ({
+      key: { symbol, expirationDate, strike, type },
+      tsStart,
+    }) => {
+      return await optionContractAggregatesDb.get([
+        symbol,
+        expirationDate,
+        strike,
+        type,
+        tsStart,
+      ]);
+    },
+  };
+
+  return {
+    ...optionContractDatabase,
+    getOptionContracts: optionContractDatabase.getKeys,
+  };
+}
+
+export const database: OptionContractDatabase = makeOptionContractDatabase();

server/src/AggregateDatabase/Stock/clickhouse.ts

@@ -0,0 +1,79 @@
+import type { StockDatabase, StockKey } from "./interfaces.js";
+import type { Aggregate } from "../interfaces.js";
+import { clickhouse, query } from "../../lib/clickhouse.js";
+
+function makeStockDatabase(): StockDatabase {
+  const stockDatabase: Omit<StockDatabase, "getSymbols"> = {
+    getKeys: async ({ date, key }) => {
+      if (key?.symbol) {
+        return [key as StockKey];
+      }
+      return await query(`
+          SELECT DISTINCT symbol FROM stock_aggregates WHERE toDate(tsStart) = '${date}'
+        `);
+    },
+    getAggregates: async ({ key: { symbol }, date }) => {
+      return (
+        await query<Omit<Aggregate<StockKey>, "key">>(`
+        SELECT 
+            toUnixTimestamp(tsStart) as tsStart,
+            open,
+            close,
+            high,
+            low
+        FROM stock_aggregates
+        WHERE symbol = '${symbol}'
+        AND toDate(tsStart) = '${date}'
+        ORDER BY tsStart ASC
+      `)
+      ).map((aggregate) => ({
+        ...aggregate,
+        tsStart: aggregate.tsStart * 1000, // unfortunately, `toUnixTimestamp` only returns second-precision
+      }));
+    },
+    getAggregate: async ({ key: { symbol }, tsStart }) => {
+      return (
+        await query<Omit<Aggregate<StockKey>, "key">>(`
+          SELECT 
+            open,
+            close,
+            high,
+            low
+          FROM stock_aggregates
+          WHERE symbol = '${symbol}'
+          AND tsStart = '${tsStart}'
+        `)
+      ).map((aggregate) => ({
+        ...aggregate,
+        tsStart,
+      }))[0];
+    },
+    insertAggregates: async (aggregates) => {
+      // stock existence is taken care of by clickhouse materialized view
+      await clickhouse.insert({
+        table: "stock_aggregates",
+        values: aggregates.map(
+          ({ key: { symbol }, tsStart, open, close, high, low }) => ({
+            symbol,
+            tsStart,
+            open,
+            close,
+            high,
+            low,
+          })
+        ),
+      });
+    },
+    getClosingPrice: async ({ key }) => {
+      // no-op: not used since stocks don't have a "closing" price, unlike options.
+      return 0;
+    },
+  };
+
+  return {
+    ...stockDatabase,
+    getSymbols: stockDatabase.getKeys,
+  };
+}
+
+export const database: StockDatabase = makeStockDatabase();

server/src/AggregateDatabase/Stock/interfaces.ts

@@ -0,0 +1,7 @@
+import type { AggregateDatabase } from "../interfaces.js";
+
+export type StockKey = { symbol: string };
+
+export type StockDatabase = AggregateDatabase<StockKey> & {
+  getSymbols: AggregateDatabase<StockKey>["getKeys"];
+};

server/src/AggregateDatabase/Stock/lmdbx.ts

@@ -0,0 +1,86 @@
+import type { StockDatabase, StockKey } from "./interfaces.js";
+import { open } from "lmdbx";
+
+const stockAggregatesDb = open({
+  path: "./stock-aggregates.db",
+  // any options go here, we can turn on compression like this:
+  compression: true,
+});
+
+const stockExistenceDb = open({
+  path: "./stock-existence.db",
+  // any options go here, we can turn on compression like this:
+  compression: true,
+});
+
+/** Largest possible key according to the `ordered-binary` (used by lmdbx) docs. */
+const MAXIMUM_KEY = Buffer.from([0xff]);
+
+function makeStockDatabase(): StockDatabase {
+  const stockDatabase: Omit<StockDatabase, "getSymbols"> = {
+    getKeys: async ({ date, key }) => {
+      if (key?.symbol) {
+        return [key as StockKey];
+      }
+      return stockExistenceDb
+        .getRange({
+          start: [date],
+          end: [date, MAXIMUM_KEY],
+        })
+        .map(({ key }) => ({ symbol: key[1] })).asArray;
+    },
+    getAggregates: async ({ key: { symbol }, date }) => {
+      const startOfDayUnix = new Date(`${date}T00:00:00Z`).valueOf();
+      const endOfDayUnix = startOfDayUnix + 3600 * 24 * 1000;
+      return stockAggregatesDb
+        .getRange({
+          start: [symbol, startOfDayUnix],
+          end: [symbol, endOfDayUnix],
+        })
+        .map(({ key, value }) => ({
+          tsStart: key[1],
+          open: value.open,
+          close: value.close,
+          high: value.high,
+          low: value.low,
+        })).asArray;
+    },
+    getAggregate: async ({ key: { symbol }, tsStart }) => {
+      return stockAggregatesDb.get([symbol, tsStart]);
+    },
+    insertAggregates: async (aggregates) => {
+      await stockExistenceDb.batch(() => {
+        for (const aggregate of aggregates) {
+          stockExistenceDb.put(
+            [
+              new Date(aggregate.tsStart).toISOString().substring(0, 10),
+              aggregate.key.symbol,
+            ],
+            null
+          );
+        }
+      });
+      await stockAggregatesDb.batch(() => {
+        for (const aggregate of aggregates) {
+          stockAggregatesDb.put([aggregate.key.symbol, aggregate.tsStart], {
+            open: aggregate.open,
+            close: aggregate.close,
+            high: aggregate.high,
+            low: aggregate.low,
+          });
+        }
+      });
+    },
+    getClosingPrice: async ({ key }) => {
+      // no-op: not used since stocks don't have a "closing" price, unlike options.
+      return 0;
+    },
+  };
+
+  return {
+    ...stockDatabase,
+    getSymbols: stockDatabase.getKeys,
+  };
+}
+
+export const database: StockDatabase = makeStockDatabase();

server/src/AggregateDatabase/interfaces.ts

@@ -0,0 +1,46 @@
+export type Candlestick = {
+  open: number;
+  close: number;
+  high: number;
+  low: number;
+};
+
+export type Aggregate<T> = {
+  key: T;
+  /** UNIX time in milliseconds */
+  tsStart: number;
+} & Candlestick;
+
+export type AggregateDatabase<T> = {
+  getKeys: ({
+    key,
+    date,
+  }: {
+    key?: T | Partial<T>;
+    date?: string;
+  }) => Promise<Array<T>>;
+  getAggregates: ({
+    key,
+    date,
+  }: {
+    key: T;
+    date: string;
+  }) => Promise<Array<Omit<Aggregate<T>, "key">>>;
+  /** Since an aggregate may not exist at the specified `tsStart`, return `undefined` if it doesn't exist. */
+  getAggregate: ({
+    key,
+    tsStart,
+  }: {
+    key: T;
+    tsStart: number;
+  }) => Promise<Omit<Aggregate<T>, "key"> | undefined>;
+  getAggregatesSync?: ({
+    key,
+    date,
+  }: {
+    key: T;
+    date: string;
+  }) => Array<Omit<Aggregate<T>, "key">>;
+  insertAggregates: (aggregates: Array<Aggregate<T>>) => Promise<void>;
+  getClosingPrice: ({ key }: { key: T }) => Promise<number>;
+};

server/src/CalendarCharacteristicsForm.ts

@@ -0,0 +1,87 @@
+import { query } from "./lib/clickhouse.js";
+import { publicProcedure, RpcType, router } from "./trpc.js";
+import {
+  Object as ObjectT,
+  String as StringT,
+  Number as NumberT,
+} from "@sinclair/typebox";
+
+/** Gets a list of symbols that have at least one option contract */
+export const getAvailableUnderlyings = publicProcedure.query(async (opts) => {
+  // return (
+  //   await query<{ symbol: string }>(`
+  //   SELECT DISTINCT(symbol) as symbol FROM option_contract_existences WHERE asOfDate = (SELECT max(asOfDate) FROM option_contract_existences)
+  // `)
+  // ).map(({ symbol }) => symbol);
+  return ["SPY"];
+});
+
+export const getAvailableAsOfDates = publicProcedure
+  .input(RpcType(ObjectT({ underlying: StringT() })))
+  .query(async (opts) => {
+    const underlying = opts.input.underlying;
+    return (
+      await query<{ asOfDate: string }>(`
+		SELECT 
+			DISTINCT(asOfDate) as asOfDate 
+		FROM option_contract_existences 
+		WHERE symbol = '${underlying}'
+		ORDER BY asOfDate
+	`)
+    ).map(({ asOfDate }) => asOfDate);
+  });
+
+export const getExpirationsForUnderlying = publicProcedure
+  .input(
+    RpcType(
+      ObjectT({
+        underlying: StringT({ maxLength: 5 }),
+        asOfDate: StringT(),
+      })
+    )
+  )
+  .query(async (opts) => {
+    const { underlying, asOfDate } = opts.input;
+    return (
+      await query<{ expirationDate: string }>(`
+		SELECT
+			DISTINCT(expirationDate) as expirationDate
+		FROM option_contract_existences
+		WHERE symbol = '${underlying}'
+		AND asOfDate = '${asOfDate}'
+		ORDER BY expirationDate
+	`)
+    ).map(({ expirationDate }) => expirationDate);
+  });
+
+export const getStrikesForUnderlying = publicProcedure
+  .input(
+    RpcType(
+      ObjectT({
+        underlying: StringT({ maxLength: 5 }),
+        asOfDate: StringT(),
+        expirationDate: StringT(),
+      })
+    )
+  )
+  .query(async (opts) => {
+    const { underlying, asOfDate, expirationDate } = opts.input;
+    return (
+      await query<{ strike: string }>(`
+		SELECT
+			DISTINCT(strike) as strike
+		FROM option_contract_existences
+		WHERE symbol = '${underlying}'
+		AND asOfDate = '${asOfDate}'
+		AND expirationDate = '${expirationDate}'
+		ORDER BY strike
+	`)
+    ).map(({ strike }) => strike);
+  });
+
+export default router({
+  getAvailableUnderlyings,
+  getAvailableAsOfDates,
+  getExpirationsForUnderlying,
+  getStrikesForUnderlying,
+});

server/src/CalendarExitPriceChart.ts

@@ -0,0 +1,53 @@
+import { query } from "./lib/clickhouse.js";
+import { publicProcedure, RpcType, router } from "./trpc.js";
+import {
+  Object as ObjectT,
+  String as StringT,
+  Number as NumberT,
+} from "@sinclair/typebox";
+
+export const getChartData = publicProcedure
+  .input(
+    RpcType(
+      ObjectT({
+        underlying: StringT({ maxLength: 5 }),
+        daysToFrontExpiration: NumberT(),
+        daysBetweenFrontAndBackExpiration: NumberT(),
+        lookbackPeriodStart: StringT({
+          pattern: "[0-9]{4}-[0-9]{2}-[0-9]{2}",
+        }),
+        lookbackPeriodEnd: StringT({ pattern: "[0-9]{4}-[0-9]{2}-[0-9]{2}" }),
+      })
+    )
+  )
+  .query(async (opts) => {
+    const {
+      underlying,
+      daysToFrontExpiration,
+      daysBetweenFrontAndBackExpiration,
+      lookbackPeriodStart,
+      lookbackPeriodEnd,
+    } = opts.input;
+    return await query<[number, number, number]>(
+      `
+     SELECT
+			 moniness*100 as x,
+			 FLOOR(price, 1) as y,
+			 sum(number_of_quotes) as n
+		 FROM calendar_stats
+		 WHERE dte = ${daysToFrontExpiration}
+		 AND moniness >= -0.05
+		 AND moniness <= 0.05
+		 AND span = ${daysBetweenFrontAndBackExpiration}
+		 AND date >= '${lookbackPeriodStart}'
+		 AND date <= '${lookbackPeriodEnd}'
+		 GROUP BY x, y
+		 ORDER BY x ASC, y ASC
+	 `,
+      "JSONEachRow"
+    );
+  });
+
+export default router({
+  getChartData,
+});

server/src/SimilarCalendarPriceChart.ts

@@ -0,0 +1,54 @@
+import { query } from "./lib/clickhouse.js";
+import { publicProcedure, RpcType, router } from "./trpc.js";
+import {
+  Object as ObjectT,
+  String as StringT,
+  Number as NumberT,
+} from "@sinclair/typebox";
+
+/** Returns prices for all matching calendars (i.e. those with similar
+ * characteristics to those given) */
+export const getChartData = publicProcedure
+  .input(
+    RpcType(
+      ObjectT({
+        underlying: StringT({ maxLength: 5 }),
+        daysToFrontExpiration: NumberT(),
+        daysBetweenFrontAndBackExpiration: NumberT(),
+        strikePercentageFromUnderlyingPriceRangeMin: NumberT(),
+        strikePercentageFromUnderlyingPriceRangeMax: NumberT(),
+        lookbackPeriodStart: StringT(),
+        lookbackPeriodEnd: StringT(),
+      })
+    )
+  )
+  .query(async (opts) => {
+    const {
+      underlying,
+      daysToFrontExpiration,
+      daysBetweenFrontAndBackExpiration,
+      strikePercentageFromUnderlyingPriceRangeMin,
+      strikePercentageFromUnderlyingPriceRangeMax,
+      lookbackPeriodStart,
+      lookbackPeriodEnd,
+    } = opts.input;
+    return await query<[number, number]>(
+      `
+     SELECT
+			 toUnixTimestamp(date) as x,
+			 price as y
+		 FROM calendar_stats
+		 WHERE dte = ${daysToFrontExpiration}
+		 AND moniness >= ${strikePercentageFromUnderlyingPriceRangeMin}
+		 AND moniness <= ${strikePercentageFromUnderlyingPriceRangeMax}
+		 AND span = ${daysBetweenFrontAndBackExpiration}
+		 AND date >= '${lookbackPeriodStart}'
+		 AND date <= '${lookbackPeriodEnd}'
+	 `,
+      "JSONEachRow"
+    );
+  });
+
+export default router({
+  getChartData,
+});

server/src/StockPriceChart.ts

@@ -0,0 +1,36 @@
+import { query } from "./lib/clickhouse.js";
+import { publicProcedure, RpcType, router } from "./trpc.js";
+import { Object as ObjectT, String as StringT } from "@sinclair/typebox";
+
+export const getChartData = publicProcedure
+  .input(
+    RpcType(
+      ObjectT({
+        underlying: StringT({ maxLength: 5 }),
+        lookbackPeriodStart: StringT(),
+        lookbackPeriodEnd: StringT(),
+      })
+    )
+  )
+  .query(async (opts) => {
+    const { underlying, lookbackPeriodStart, lookbackPeriodEnd } = opts.input;
+    return await query<[number, number]>(
+      `
+		 SELECT
+			 toUnixTimestamp(toStartOfHour(ts)) as x,
+			 avg(price) as y
+		 FROM stock_aggregates_filled
+		 WHERE symbol = '${underlying}'
+		 AND ts >= '${lookbackPeriodStart} 00:00:00'
+		 AND ts <= '${lookbackPeriodEnd} 00:00:00'
+     GROUP BY x
+		 ORDER BY x ASC
+	 `,
+      "JSONCompactEachRow"
+      // "JSONEachRow"
+    );
+  });
+
+export default router({
+  getChartData,
+});

server/src/backtest.ts

@@ -0,0 +1,146 @@
+import { database as stockDatabase } from "./AggregateDatabase/Stock/lmdbx.js";
+import { database as calendarDatabase } from "./AggregateDatabase/Calendar/optiondb-lmdbx.js";
+import type { CalendarKey } from "./AggregateDatabase/Calendar/interfaces.js";
+import { nextDate } from "./lib/utils/nextDate.js";
+
+export type BacktestInput = {
+  symbol: string;
+  startDate: string;
+  endDate: string;
+  /** Between 0 and 1. The frequency that similar calendars have historically ended (i.e. within the last hour) at a higher price than the current calendar's price. */
+  historicalProbabilityOfSuccess?: number;
+  initialBuyingPower?: number;
+};
+
+export async function backtest({
+  symbol,
+  startDate,
+  endDate,
+  historicalProbabilityOfSuccess = 0.8,
+  initialBuyingPower = 2000,
+}: BacktestInput) {
+  let buyingPower = initialBuyingPower;
+  const portfolio = new Set<CalendarKey>();
+  // for each day:
+  for (
+    let date = startDate, didBuyCalendar = false;
+    date <= endDate;
+    date = nextDate(date), didBuyCalendar = false
+  ) {
+    const calendars = await calendarDatabase.getCalendars({
+      key: { symbol },
+      date,
+    });
+    const stockAggregates = await stockDatabase.getAggregates({
+      key: { symbol },
+      date,
+    });
+    // for each minute of that day for which we have a stock candlestick:
+    for (const stockAggregate of stockAggregates) {
+      // console.log("Current Time:", new Date(stockAggregate.tsStart));
+      // filter-out calendars that are far-from-the-money (5%)
+      const calendarsNearTheMoney = calendars.filter(
+        ({ strike }) =>
+          Math.abs((stockAggregate.open - strike) / stockAggregate.open) < 0.05
+      );
+      console.log(
+        "Current Date:",
+        new Intl.DateTimeFormat("en-US", {
+          timeZone: "America/New_York",
+          dateStyle: "full",
+          timeStyle: "long",
+        }).format(new Date(stockAggregate.tsStart)),
+        ";",
+        `${calendarsNearTheMoney.length} Calendars Near The Money`
+      );
+      // for each relevant calendar on that day:
+      for (const calendar of calendarsNearTheMoney) {
+        const strikePercentageFromTheMoney = Math.abs(
+          (stockAggregate.open - calendar.strike) / stockAggregate.open
+        );
+        /** Number of days between the back and front expiration dates. */
+        const calendarSpanInDays =
+          (new Date(calendar.backExpirationDate).valueOf() -
+            new Date(calendar.frontExpirationDate).valueOf()) /
+          (1000 * 60 * 60 * 24);
+        const targetCalendarPrice =
+          await calendarDatabase.getTargetPriceByProbability({
+            symbol,
+            calendarSpan: calendarSpanInDays,
+            strikePercentageFromTheMoney,
+            historicalProbabilityOfSuccess,
+          });
+        const calendarAggregateAtCurrentTime =
+          await calendarDatabase.getAggregate({
+            key: {
+              ...calendar,
+            },
+            tsStart: stockAggregate.tsStart,
+          });
+        // if there exists a matching calendar candlestick for the current minute:
+        if (calendarAggregateAtCurrentTime) {
+          // if the current candlestick is a good price (i.e. less than the target price):
+          const minCalendarPriceInCandlestick = Math.min(
+            calendarAggregateAtCurrentTime.open,
+            calendarAggregateAtCurrentTime.close
+          );
+          if (
+            minCalendarPriceInCandlestick < targetCalendarPrice &&
+            minCalendarPriceInCandlestick >
+              0.07 /* sometimes the calendar price is zero or negative, which is of course impossible; some institution got a good deal */
+          ) {
+            // if we can afford to buy the calendar:
+            if (buyingPower > minCalendarPriceInCandlestick) {
+              // buy the calendar, and continue to the next day:
+              portfolio.add(calendar);
+              buyingPower = buyingPower - minCalendarPriceInCandlestick * 100;
+              console.log(
+                "Bought",
+                calendar,
+                "for",
+                minCalendarPriceInCandlestick * 100,
+                "...$",
+                buyingPower,
+                "left"
+              );
+              didBuyCalendar = true;
+            }
+          }
+        }
+        if (didBuyCalendar) {
+          break;
+        }
+      }
+      if (didBuyCalendar) {
+        break;
+      }
+    }
+
+    // for each calendar in portfolio, if today is the last day, close the position:
+    for (const calendar of portfolio.values()) {
+      if (calendar.frontExpirationDate === date) {
+        const calendarClosingPrice = await calendarDatabase.getClosingPrice({
+          key: {
+            ...calendar,
+          },
+        });
+        portfolio.delete(calendar);
+        buyingPower = buyingPower + calendarClosingPrice * 100;
+        console.log(
+          "Sold",
+          calendar,
+          "for",
+          calendarClosingPrice,
+          "...$",
+          buyingPower,
+          "left"
+        );
+      }
+    }
+  }
+
+  return {
+    endingBuyingPower: buyingPower,
+    portfolio: Array.from(portfolio.values()),
+  };
+}

server/src/cli.tsx

@@ -0,0 +1,85 @@
+import React, { useState, useEffect } from "react";
+import { render, Box, Text, useInput, useApp } from "ink";
+import TextInput from "ink-text-input";
+import type { BacktestInput } from "./backtest.js";
+import { backtest } from "./backtest.js";
+
+const App = () => {
+  const [step, setStep] = useState(0);
+  const [input, setInput] = useState<Partial<BacktestInput>>({});
+  const [result, setResult] = useState<string>("");
+  const { exit } = useApp();
+
+  const steps = [
+    { prompt: "Enter symbol:", key: "symbol" },
+    { prompt: "Enter start date (YYYY-MM-DD):", key: "startDate" },
+    { prompt: "Enter end date (YYYY-MM-DD):", key: "endDate" },
+    {
+      prompt: "Enter historical probability of success (0-1, default 0.8):",
+      key: "historicalProbabilityOfSuccess",
+    },
+    {
+      prompt: "Enter initial buying power (default 2000):",
+      key: "initialBuyingPower",
+    },
+  ];
+
+  useInput((input, key) => {
+    if (key.escape) {
+      exit();
+    }
+  });
+
+  useEffect(() => {
+    if (step === steps.length) {
+      const runBacktest = async () => {
+        try {
+          const backtestResult = await backtest(input as BacktestInput);
+          setResult(JSON.stringify(backtestResult, null, 2));
+        } catch (error) {
+          setResult(`Error: ${error.message}`);
+        }
+      };
+      runBacktest();
+    }
+  }, [step, input]);
+
+  const handleSubmit = (value: string) => {
+    const currentStep = steps[step];
+    let parsedValue: string | number = value;
+
+    if (
+      currentStep.key === "historicalProbabilityOfSuccess" ||
+      currentStep.key === "initialBuyingPower"
+    ) {
+      parsedValue = Number.parseFloat(value) || undefined;
+    }
+
+    setInput({ ...input, [currentStep.key]: parsedValue });
+    setStep(step + 1);
+  };
+
+  if (step < steps.length) {
+    return (
+      <Box flexDirection="column">
+        <Text>{steps[step].prompt}</Text>
+        <TextInput
+          value={(input[steps[step].key] as string) || ""}
+          onChange={(value) =>
+            setInput((prev) => ({ ...prev, [steps[step].key]: value }))
+          }
+          onSubmit={handleSubmit}
+        />
+      </Box>
+    );
+  }
+
+  return (
+    <Box flexDirection="column">
+      <Text>Backtest Results:</Text>
+      <Text>{result}</Text>
+    </Box>
+  );
+};
+
+render(<App />);

server/src/index.ts

@@ -1,110 +1,24 @@
-import { publicProcedure, router } from "./trpc.js";
+import { publicProcedure, router, RpcType } from "./trpc.js";
 import { query } from "./lib/clickhouse.js";
 import { createHTTPHandler } from "@trpc/server/adapters/standalone";
 import cors from "cors";
 import {
   Object as ObjectT,
   String as StringT,
-  TSchema,
   Number as NumberT,
 } from "@sinclair/typebox";
-import { TypeCompiler } from "@sinclair/typebox/compiler";
-import { TRPCError } from "@trpc/server";
-import { createServer } from "http";
+import { createServer } from "node:http";
 import { Env } from "@humanwhocodes/env";
+import StockPriceChart from "./StockPriceChart.js";
+import SimilarCalendarPriceChart from "./SimilarCalendarPriceChart.js";
+import CalendarExitPriceChart from "./CalendarExitPriceChart.js";
+import CalendarCharacteristicsForm from "./CalendarCharacteristicsForm.js";
 
 const env = new Env();
 
 const LISTEN_PORT = env.get("LISTEN_PORT", 3005);
 
-/**
- * Generate a TRPC-compatible validator function given a Typebox schema.
- * This was copied from [https://github.com/sinclairzx81/typebox/blob/6cfcdc02cc813af2f1be57407c771fc4fadfc34a/example/trpc/readme.md].
- * @param schema A Typebox schema
- * @returns A TRPC-compatible validator function
- */
-export function RpcType<T extends TSchema>(schema: T) {
-  const check = TypeCompiler.Compile(schema);
-  return (value: unknown) => {
-    if (check.Check(value)) return value;
-    const { path, message } = check.Errors(value).First()!;
-    throw new TRPCError({
-      message: `${message} for ${path}`,
-      code: "BAD_REQUEST",
-    });
-  };
-}
-
-const appRouter = router({
-  getAvailableUnderlyings: publicProcedure.query(async (opts) => {
-    // return (
-    //   await query<{ symbol: string }>(`
-    //   SELECT DISTINCT(symbol) as symbol FROM option_contract_existences WHERE asOfDate = (SELECT max(asOfDate) FROM option_contract_existences)
-    // `)
-    // ).map(({ symbol }) => symbol);
-    return ["AAPL", "AMD", "GOOGL", "MSFT", "NFLX"];
-  }),
-  getAvailableAsOfDates: publicProcedure
-    .input(RpcType(ObjectT({ underlying: StringT() })))
-    .query(async (opts) => {
-      const underlying = opts.input.underlying;
-      return (
-        await query<{ asOfDate: string }>(`
-        SELECT 
-          DISTINCT(asOfDate) as asOfDate 
-        FROM option_contract_existences 
-        WHERE symbol = '${underlying}'
-        ORDER BY asOfDate
-      `)
-      ).map(({ asOfDate }) => asOfDate);
-    }),
-  getExpirationsForUnderlying: publicProcedure
-    .input(
-      RpcType(
-        ObjectT({
-          underlying: StringT({ maxLength: 5 }),
-          asOfDate: StringT(),
-        })
-      )
-    )
-    .query(async (opts) => {
-      const { underlying, asOfDate } = opts.input;
-      return (
-        await query<{ expirationDate: string }>(`
-        SELECT
-          DISTINCT(expirationDate) as expirationDate
-        FROM option_contract_existences
-        WHERE symbol = '${underlying}'
-        AND asOfDate = '${asOfDate}'
-        ORDER BY expirationDate
-      `)
-      ).map(({ expirationDate }) => expirationDate);
-    }),
-  getStrikesForUnderlying: publicProcedure
-    .input(
-      RpcType(
-        ObjectT({
-          underlying: StringT({ maxLength: 5 }),
-          asOfDate: StringT(),
-          expirationDate: StringT(),
-        })
-      )
-    )
-    .query(async (opts) => {
-      const { underlying, asOfDate, expirationDate } = opts.input;
-      return (
-        await query<{ strike: string }>(`
-        SELECT
-          DISTINCT(strike) as strike
-        FROM option_contract_existences
-        WHERE symbol = '${underlying}'
-        AND asOfDate = '${asOfDate}'
-        AND expirationDate = '${expirationDate}'
-        ORDER BY strike
-      `)
-      ).map(({ strike }) => strike);
-    }),
-  getOpensForUnderlying: publicProcedure
+export const getOpensForUnderlying = publicProcedure
   .input(
     RpcType(
       ObjectT({
@@ -125,8 +39,9 @@ const appRouter = router({
 	`,
       "JSONEachRow"
     );
-    }),
-  getOpensForOptionContract: publicProcedure
+  });
+
+export const getOpensForOptionContract = publicProcedure
   .input(
     RpcType(
       ObjectT({
@@ -152,160 +67,16 @@ const appRouter = router({
 	`,
       "JSONEachRow"
     );
-    }),
-  getHistoricalCalendarPrices: publicProcedure
-    .input(
-      RpcType(
-        ObjectT({
-          underlying: StringT({ maxLength: 5 }),
-          daysToFrontExpiration: NumberT(),
-          daysBetweenFrontAndBackExpiration: NumberT(),
-          strikePercentageFromUnderlyingPriceRangeMin: NumberT(),
-          strikePercentageFromUnderlyingPriceRangeMax: NumberT(),
-        })
-      )
-    )
-    .query(async (opts) => {
-      const {
-        underlying,
-        daysToFrontExpiration,
-        daysBetweenFrontAndBackExpiration,
-        strikePercentageFromUnderlyingPriceRangeMin,
-        strikePercentageFromUnderlyingPriceRangeMax,
-      } = opts.input;
-      return (
-        await query<[number, number]>(
-          `
-        SELECT
-          toUnixTimestamp(tsStart) as asOfTs,
-          calendarPrice
-        FROM calendar_histories
-        WHERE symbol = '${underlying}'
-        AND daysToFrontExpiration = ${daysToFrontExpiration}
-        AND strikePercentageFromUnderlyingPrice >= ${strikePercentageFromUnderlyingPriceRangeMin}
-        AND strikePercentageFromUnderlyingPrice <= ${strikePercentageFromUnderlyingPriceRangeMax}
-        AND daysBetweenFrontAndBackExpiration = ${daysBetweenFrontAndBackExpiration}
-      `,
-          "JSONCompactEachRow"
-        )
-      ).reduce(
-        (columns, row) => {
-          columns[0].push(row[0]);
-          columns[1].push(row[1]);
-          return columns;
-        },
-        [[], []]
-      );
-    }),
-  getHistoricalStockQuoteChartData: publicProcedure
-    .input(
-      RpcType(
-        ObjectT({
-          underlying: StringT({ maxLength: 5 }),
-          lookbackPeriodStart: StringT(),
-          lookbackPeriodEnd: StringT(),
-        })
-      )
-    )
-    .query(async (opts) => {
-      const { underlying, lookbackPeriodStart, lookbackPeriodEnd } = opts.input;
-      return await query<[number, number]>(
-        `
-        SELECT
-          toUnixTimestamp(tsStart) as x,
-          open as y
-        FROM stock_aggregates
-        WHERE symbol = '${underlying}'
-        AND tsStart >= '${lookbackPeriodStart} 00:00:00'
-        AND tsStart <= '${lookbackPeriodEnd} 00:00:00'
-        ORDER BY x ASC
-      `,
-        "JSONEachRow"
-      );
-    }),
-  getHistoricalCalendarQuoteChartData: publicProcedure
-    .input(
-      RpcType(
-        ObjectT({
-          underlying: StringT({ maxLength: 5 }),
-          daysToFrontExpiration: NumberT(),
-          daysBetweenFrontAndBackExpiration: NumberT(),
-          strikePercentageFromUnderlyingPriceRangeMin: NumberT(),
-          strikePercentageFromUnderlyingPriceRangeMax: NumberT(),
-          lookbackPeriodStart: StringT(),
-          lookbackPeriodEnd: StringT(),
-        })
-      )
-    )
-    .query(async (opts) => {
-      const {
-        underlying,
-        daysToFrontExpiration,
-        daysBetweenFrontAndBackExpiration,
-        strikePercentageFromUnderlyingPriceRangeMin,
-        strikePercentageFromUnderlyingPriceRangeMax,
-        lookbackPeriodStart,
-        lookbackPeriodEnd,
-      } = opts.input;
-      return await query<[number, number]>(
-        `
-        SELECT
-          toUnixTimestamp(tsStart) as x,
-          truncate(calendarPrice, 2) as y
-        FROM calendar_histories
-        WHERE symbol = '${underlying}'
-        AND daysToFrontExpiration = ${daysToFrontExpiration}
-        AND strikePercentageFromUnderlyingPrice >= ${strikePercentageFromUnderlyingPriceRangeMin}
-        AND strikePercentageFromUnderlyingPrice <= ${strikePercentageFromUnderlyingPriceRangeMax}
-        AND daysBetweenFrontAndBackExpiration = ${daysBetweenFrontAndBackExpiration}
-        AND tsStart >= '${lookbackPeriodStart} 00:00:00'
-        AND tsStart <= '${lookbackPeriodEnd} 00:00:00'
-      `,
-        "JSONEachRow"
-      );
-    }),
-  getHistoricalCalendarExitQuoteChartData: publicProcedure
-    .input(
-      RpcType(
-        ObjectT({
-          underlying: StringT({ maxLength: 5 }),
-          daysToFrontExpiration: NumberT(),
-          daysBetweenFrontAndBackExpiration: NumberT(),
-          lookbackPeriodStart: StringT({
-            pattern: "[0-9]{4}-[0-9]{2}-[0-9]{2}",
-          }),
-          lookbackPeriodEnd: StringT({ pattern: "[0-9]{4}-[0-9]{2}-[0-9]{2}" }),
-        })
-      )
-    )
-    .query(async (opts) => {
-      const {
-        underlying,
-        daysToFrontExpiration,
-        daysBetweenFrontAndBackExpiration,
-        lookbackPeriodStart,
-        lookbackPeriodEnd,
-      } = opts.input;
-      return await query<[number, number, number]>(
-        `
-        SELECT
-          FLOOR(strikePercentageFromUnderlyingPrice, 1) as x,
-          FLOOR(calendarPrice, 1) as y,
-          count(*) as n
-        FROM calendar_histories
-        WHERE symbol = '${underlying}'
-        AND daysToFrontExpiration = ${daysToFrontExpiration}
-        AND strikePercentageFromUnderlyingPrice >= -5.0
-        AND strikePercentageFromUnderlyingPrice <= 5.0
-        AND daysBetweenFrontAndBackExpiration = ${daysBetweenFrontAndBackExpiration}
-        AND tsStart >= '${lookbackPeriodStart} 00:00:00'
-        AND tsStart <= '${lookbackPeriodEnd} 00:00:00'
-        GROUP BY x, y
-        ORDER BY x ASC, y ASC
-      `,
-        "JSONEachRow"
-      );
-    }),
+  });
+
+const appRouter = router({
+  CalendarCharacteristicsForm,
+  StockPriceChart,
+  SimilarCalendarPriceChart,
+  CalendarExitPriceChart,
+
+  getOpensForUnderlying,
+  getOpensForOptionContract,
 });
 
 // Export type router type signature,
@@ -329,4 +100,4 @@ const server = createServer((req, res) => {
   }
 });
 
-server.listen(parseInt(LISTEN_PORT));
+server.listen(Number.parseInt(LISTEN_PORT));

server/src/lib/clickhouse.ts

@@ -1,31 +1,38 @@
 import { createClient as createClickhouseClient } from "@clickhouse/client";
 import type { DataFormat } from "@clickhouse/client";
 import { Env } from "@humanwhocodes/env";
+import { retry } from "./utils/retry.js";
 
 const env = new Env();
 
 const { CLICKHOUSE_USER, CLICKHOUSE_PASS } = env.required;
-const CLICKHOUSE_HOST = env.get("CLICKHOUSE_HOST", "http://localhost:8123");
+const CLICKHOUSE_URL = env.get("CLICKHOUSE_URL", "http://localhost:8123");
 
 export const clickhouse = createClickhouseClient({
-  host: CLICKHOUSE_HOST,
+  url: CLICKHOUSE_URL,
   username: CLICKHOUSE_USER,
   password: CLICKHOUSE_PASS,
+  keep_alive: {
+    enabled: true,
+    // socket_ttl: 2500,
+  },
 });
 
 export async function query<T>(
   queryString: string,
   format: DataFormat = "JSONEachRow"
 ): Promise<Array<T>> {
-  return await (
-    await clickhouse.query({
+  return await retry(
+    async () => {
+      const result = await clickhouse.query({
         query: queryString,
         format,
         clickhouse_settings: {
           output_format_json_quote_64bit_integers: 0,
-        //output_format_json_quote_64bit_floats: false,
-        //output_format_json_quote_64bit_decimals: false,
         },
-    })
-  ).json();
+      });
+      return await result.json();
+    },
+    { maxRetries: 5 }
+  );
 }

server/src/lib/utils/nextDate.ts

@@ -0,0 +1,6 @@
+export function nextDate(date: string) {
+  const [year, month, day] = date.split('-').map(Number);
+  const nextDay = new Date(Date.UTC(year, month - 1, day + 1));
+  const nextDateString = nextDay.toISOString().substring(0, 10);
+  return nextDateString;
+}

server/src/lib/utils/retry.ts

@@ -0,0 +1,61 @@
+type RetryDecision = {
+  shouldRetry: boolean;
+  maxRetries?: number;
+  delay?: number;
+};
+
+type RetryOptions = {
+  maxRetries?: number;
+  delay?: number;
+  shouldRetry?: (error: unknown) => RetryDecision;
+};
+
+export async function retry<T>(
+  fn: () => Promise<T>,
+  options: RetryOptions = {},
+): Promise<T> {
+  const {
+    maxRetries: defaultMaxRetries = 3,
+    delay: defaultDelay = 1000,
+    shouldRetry = retryOnAnyError,
+  } = options;
+
+  let attempt = 1;
+  while (true) {
+    try {
+      return await fn();
+    } catch (error) {
+      const decision = shouldRetry(error);
+      if (!decision.shouldRetry) throw error;
+
+      const currentMaxRetries = decision.maxRetries ?? defaultMaxRetries;
+      const currentDelay = decision.delay ?? defaultDelay;
+
+      if (attempt >= currentMaxRetries) throw error;
+
+      console.warn(
+        `Error occurred, retrying (attempt ${attempt}/${currentMaxRetries})...`,
+      );
+      console.error(error);
+      await new Promise((resolve) => setTimeout(resolve, currentDelay));
+      attempt++;
+    }
+  }
+}
+
+export const retryOnAnyError = (): RetryDecision => ({ shouldRetry: true });
+export const retryOnTimeout = (error: unknown): RetryDecision =>
+  error instanceof Error && error.message.includes("timeout")
+    ? { shouldRetry: true, maxRetries: 5, delay: 2000 }
+    : { shouldRetry: false };
+export const retryOnErrorType =
+  (errorType: new () => Error, options?: Partial<RetryDecision>) =>
+  (error: unknown) =>
+    error instanceof errorType
+      ? { shouldRetry: true, ...options }
+      : { shouldRetry: false };
+export const retryOnErrorSubstring =
+  (substring: string, options?: Partial<RetryDecision>) => (error: unknown) =>
+    error instanceof Error && error.message.includes(substring)
+      ? { shouldRetry: true, ...options }
+      : { shouldRetry: false };

server/src/scripts/clickhouse-to-lmdbx.ts

@@ -0,0 +1,77 @@
+import type { AggregateDatabase } from "../AggregateDatabase/interfaces.js";
+import { database as stockDatabaseClickhouse } from "../AggregateDatabase/Stock/clickhouse.js";
+import { database as stockDatabaseLmdbx } from "../AggregateDatabase/Stock/lmdbx.js";
+// import { optionContractDatabase as optionContractDatabaseClickhouse } from "../optiondb.clickhouse.js";
+// import { optionContractDatabase as optionContractDatabaseLmdbx } from "../optiondb.lmdbx.js";
+import { nextDate } from "../lib/utils/nextDate.js";
+import { retry, retryOnTimeout } from "../lib/utils/retry.js";
+import type { OptionContractKey } from "../AggregateDatabase/OptionContract/interfaces.js";
+import type { StockKey } from "../AggregateDatabase/Stock/interfaces.js";
+
+async function syncAggregates<T>({
+  fromDatabase,
+  toDatabase,
+  key,
+  date,
+}: {
+  fromDatabase: AggregateDatabase<T>;
+  toDatabase: AggregateDatabase<T>;
+  key: T;
+  date: string;
+}) {
+  const aggregatesFrom = (await fromDatabase.getAggregates({ key, date })).map(
+    (aggregateWithoutKey) => ({ ...aggregateWithoutKey, key })
+  );
+  await toDatabase.insertAggregates(aggregatesFrom);
+}
+
+const symbols = ["AMD", "AAPL", "MSFT", "GOOGL", "NFLX", "NVDA"];
+async function run<T extends StockKey | OptionContractKey>({
+  fromDatabase,
+  toDatabase,
+}: {
+  fromDatabase: AggregateDatabase<T>;
+  toDatabase: AggregateDatabase<T>;
+}) {
+  const startDate = process.argv[2];
+  const endDate = process.argv[3];
+
+  if (!startDate || !endDate) {
+    console.error("Usage: node clickhouse-to-lmdbx.js <startDate> <endDate>");
+    console.error("Dates should be in YYYY-MM-DD format");
+    process.exit(1);
+  }
+  for (let date = startDate; date <= endDate; date = nextDate(date)) {
+    // const symbols = await stockDatabaseClickhouse.getSymbols({ date });
+    for (const symbol of symbols) {
+      console.log(date, symbol);
+      const keys = await retry(
+        () =>
+          fromDatabase.getKeys({
+            key: { symbol } as T,
+            date,
+          }),
+        { shouldRetry: retryOnTimeout }
+      );
+
+      for (const key of keys) {
+        // console.log(date, symbol, key.expirationDate, key.strike, key.type);
+        await retry(
+          () =>
+            syncAggregates({
+              fromDatabase,
+              toDatabase,
+              key,
+              date,
+            }),
+          { shouldRetry: retryOnTimeout }
+        );
+      }
+    }
+  }
+}
+
+await run({
+  fromDatabase: stockDatabaseClickhouse,
+  toDatabase: stockDatabaseLmdbx,
+});

server/src/trpc.ts

@@ -1,14 +1,35 @@
-import { initTRPC } from '@trpc/server';
- 
+import { initTRPC } from "@trpc/server";
+import { TypeCompiler } from "@sinclair/typebox/compiler";
+import { TRPCError } from "@trpc/server";
+import type { TSchema } from "@sinclair/typebox";
+
 /**
  * Initialization of tRPC backend
  * Should be done only once per backend!
  */
 const t = initTRPC.create();
- 
+
 /**
  * Export reusable router and procedure helpers
  * that can be used throughout the router
  */
 export const router = t.router;
 export const publicProcedure = t.procedure;
+
+/**
+ * Generate a TRPC-compatible validator function given a Typebox schema.
+ * This was copied from [https://github.com/sinclairzx81/typebox/blob/6cfcdc02cc813af2f1be57407c771fc4fadfc34a/example/trpc/readme.md].
+ * @param schema A Typebox schema
+ * @returns A TRPC-compatible validator function
+ */
+export function RpcType<T extends TSchema>(schema: T) {
+  const check = TypeCompiler.Compile(schema);
+  return (value: unknown) => {
+    if (check.Check(value)) return value;
+    const { path, message } = check.Errors(value).First();
+    throw new TRPCError({
+      message: `${message} for ${path}`,
+      code: "BAD_REQUEST",
+    });
+  };
+}

server/tables.sql

@@ -82,31 +82,9 @@ CREATE TABLE stock_aggregates
   volume UInt64, 
   volume_weighted_price Float64
 )
-ENGINE MergeTree()
+ENGINE ReplacingMergeTree()
 ORDER BY (symbol, tsStart)
 
-CREATE TABLE option_aggregates
-(
-  symbol LowCardinality(String), 
-  expirationDate Date,
-  strike Float32,
-  type Enum('call', 'put'),
-
-  tsStart DateTime32 CODEC(DoubleDelta(1), ZSTD),
-  open Float32 CODEC(Delta(2), ZSTD), 
-  close Float32 CODEC(Delta(2), ZSTD), 
-  low Float32 CODEC(Delta(2), ZSTD), 
-  high Float32 CODEC(Delta(2), ZSTD), 
-  volume UInt32 CODEC(T64),
-  volumeWeightedPrice Float32 CODEC(Delta(2), ZSTD)
-)
-ENGINE MergeTree()
-ORDER BY (symbol, expirationDate, strike, type, tsStart)
-
-ALTER TABLE option_aggregates ADD INDEX idx_expirationDate expirationDate TYPE minmax GRANULARITY 2;
-ALTER TABLE option_aggregates ADD INDEX idx_strike strike TYPE minmax GRANULARITY 2;
-ALTER TABLE option_aggregates ADD INDEX idx_tsStart tsStart TYPE minmax GRANULARITY 2;
-
 CREATE TABLE option_contract_aggregates
 (
   symbol LowCardinality(String), 
@@ -125,47 +103,51 @@ CREATE TABLE option_contract_aggregates
 ENGINE ReplacingMergeTree()
 ORDER BY (symbol, expirationDate, strike, type, tsStart)
 
-CREATE TABLE option_histories_last_day
+-- For stats about the character of this stock's options given a certain distance-from-the-money and time-to-expiration:
+CREATE TABLE calendar_stats_by_symbol
 (
   symbol LowCardinality(String),
-  expirationDate Date,
-  strike Float64,
-  type Enum('call', 'put'),
 
-  tsStart DateTime32,
-  open Float64,
-  minutesToFront UInt16,
-  underlyingPrice Float64,
-  strikePercentageFromUnderlyingPrice Float64
+  calendarSpanInDays UInt16,
+
+  tsStart DateTime32 CODEC(Delta, ZSTD), -- included so as to assess the character of the stock's options within a given range of time; for example, if the stock got really hot for a few months.
+  minutesToExpiration UInt32,
+
+  frontMonthOpen Float32, 
+  backMonthOpen Float32, 
+  strikePercentageFromUnderlyingOpen Float64,
+  frontMonthClose Float32, 
+  backMonthClose Float32, 
+  strikePercentageFromUnderlyingClose Float64
 )
 ENGINE MergeTree()
-ORDER BY (symbol, minutesToFront, strikePercentageFromUnderlyingPrice)
-
-INSERT INTO option_histories_last_day
+PRIMARY KEY (symbol, calendarSpanInDays, tsStart)
+ORDER BY (symbol, calendarSpanInDays, tsStart, minutesToExpiration);
+-- Populate `calendar_stats_by_symbol` by:
+-- INSERT INTO calendar_stats_by_symbol
 SELECT
-  option_aggregates.symbol as symbol, 
-  option_aggregates.expirationDate as expirationDate,
-  option_aggregates.strike as strike,
-  option_aggregates.type as type,
-  option_aggregates.tsStart as tsStart,
-  option_aggregates.open as open,
-  date_diff('minute', tsStart, timestamp_add(expirationDate, INTERVAL 16 HOUR)) as minutesToFront,
-  stock_aggregates.open as underlyingPrice Float64,
-  (strike-underlyingPrice)/underlyingPrice as strikePercentageFromUnderlyingPrice Float64
-FROM (
-  SELECT 
-    symbol,
-    expirationDate,
-    strike,
-    type,
-    tsStart,
-    open
-  FROM option_aggregates
-  WHERE toDate(tsStart) = expirationDate
-) as option_aggregates
+  frontMonth.symbol,
+  dateDiff('day', frontMonth.expirationDate, backMonth.expirationDate) as calendarSpanInDays,
+  frontMonth.tsStart,
+  dateDiff('minute', frontMonth.tsStart, addMinutes(toDateTime(expirationDate, 'America/New_York'), 60 * 16)) as minutesToExpiration,
+  frontMonth.open as frontMonthOpen,
+  backMonth.open as backMonthOpen,
+  (frontMonth.strike-stock_aggregates.open)/stock_aggregates.open*100.0 as strikePercentageFromUnderlyingOpen,
+  frontMonth.close as frontMonthClose,
+  backMonth.close as backMonthClose,
+  (frontMonth.strike-stock_aggregates.close)/stock_aggregates.close*100.0 as strikePercentageFromUnderlyingClose
+FROM option_contract_aggregates as frontMonth
 INNER JOIN stock_aggregates
-ON option_aggregates.symbol = stock_aggregates.symbol
-AND option_aggregates.tsStart = stock_aggregates.tsStart
+ON option_contract_aggregates.symbol = stock_aggregates.symbol
+AND option_contract_aggregates.tsStart = stock_aggregates.tsStart
+INNER JOIN option_contract_aggregates as backMonth
+ON frontMonth.symbol = backMonth.symbol
+AND frontMonth.strike = backMonth.strike
+AND frontMonth.type = backMonth.type
+AND frontMonth.tsStart = backMonth.tsStart
+WHERE backMonth.expirationDate > frontMonth.expirationDate
+AND frontMonth.symbol = 'AAPL'
+AND calendarSpanInDays = 14
 
 CREATE TABLE option_histories
 (

server/tsconfig.json

@@ -1,12 +1,13 @@
 {
   "compilerOptions": {
+    "jsx": "react",
     "target": "ES2020",
     "module": "ESNext",
     "moduleResolution": "bundler",
     "noEmit": true,
     "allowJs": true,
-		"checkJs": true,
+    "checkJs": false,
     "lib": ["es2022"]
   },
-	"include": ["**/*"]
+  "include": ["src/**/*"]
 }