Bugfix/missing close price in historical market data (#7694)

* Fix missing close price in historical market data of Yahoo Finance service

* Discard market prices carried forward beyond the data of the data provider

* Update changelog

CHANGELOG.md

@@ -21,6 +21,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed the benchmark label in the tooltip of the benchmark comparator on the analysis page
 - Fixed the _Storybook_ setup by loading the `@angular/localize` polyfill centrally
 - Fixed an issue in the activities import where an unused custom asset profile was created if the related activities were not imported
+- Fixed the missing close price in the historical market data of the _Yahoo Finance_ service by falling back to the market price of the quote
+- Fixed the historical market data gathering by no longer storing the last known market price for the most recent dates without data from the data provider
 
 ## 3.57.0 - 2026-08-21
 

apps/api/src/services/data-provider/yahoo-finance/yahoo-finance.service.ts

@@ -143,8 +143,7 @@ export class YahooFinanceService implements DataProviderInterface {
     [date: string]: DataProviderHistoricalResponse;
   }> {
     try {
-      const historicalResult = this.convertToHistoricalResult(
-        await this.yahooFinance.chart(
+      const chartResult = await this.yahooFinance.chart(
         this.yahooFinanceDataEnhancerService.convertToYahooFinanceSymbol(
           symbol
         ),
@@ -156,17 +155,27 @@ export class YahooFinanceService implements DataProviderInterface {
             DATE_FORMAT
           )
         }
-        )
       );
 
+      const historicalResult = this.convertToHistoricalResult(chartResult);
+
       const response: {
         [date: string]: DataProviderHistoricalResponse;
       } = {};
 
-      for (const historicalItem of historicalResult) {
-        response[format(historicalItem.date, DATE_FORMAT)] = {
-          marketPrice: historicalItem.close
-        };
+      for (const { close, date } of historicalResult) {
+        // The chart endpoint can omit the close price of a historical item, for
+        // example if the daily data of an exchange has not been consolidated yet.
+        // In this case, the market price of the corresponding quote is taken.
+        const marketPrice =
+          close ??
+          (isSameDay(date, chartResult.meta.regularMarketTime)
+            ? chartResult.meta.regularMarketPrice
+            : undefined);
+
+        if (marketPrice) {
+          response[format(date, DATE_FORMAT)] = { marketPrice };
+        }
       }
 
       return response;

apps/api/src/services/queues/data-gathering/data-gathering.processor.ts

@@ -125,6 +125,7 @@ export class DataGatheringProcessor {
 
       const data: Prisma.MarketDataUpdateInput[] = [];
       let lastMarketPrice: number;
+      let numberOfMarketDataItemsToKeep = 0;
 
       while (
         isBefore(
@@ -139,15 +140,13 @@ export class DataGatheringProcessor {
           )
         )
       ) {
-        if (
-          historicalData[assetProfileIdentifier]?.[
-            format(currentDate, DATE_FORMAT)
-          ]?.marketPrice
-        ) {
-          lastMarketPrice =
+        const marketPriceOfDataProvider =
           historicalData[assetProfileIdentifier]?.[
             format(currentDate, DATE_FORMAT)
           ]?.marketPrice;
+
+        if (marketPriceOfDataProvider) {
+          lastMarketPrice = marketPriceOfDataProvider;
         }
 
         if (lastMarketPrice) {
@@ -158,11 +157,21 @@ export class DataGatheringProcessor {
             marketPrice: lastMarketPrice,
             state: 'CLOSE'
           });
+
+          if (marketPriceOfDataProvider) {
+            numberOfMarketDataItemsToKeep = data.length;
+          }
         }
 
         currentDate = addDays(currentDate, 1);
       }
 
+      // A gap at the end means that the market data is not available yet, in
+      // contrast to a gap in between, which means that the market was closed.
+      // Therefore, the market prices which are carried forward after the last
+      // market price of the data provider are discarded.
+      data.splice(numberOfMarketDataItemsToKeep);
+
       if (force) {
         await this.marketDataService.replaceForSymbol({
           data,

apps/api/src/services/queues/data-gathering/data-gathering.service.ts

@@ -310,9 +310,9 @@ export class DataGatheringService {
       });
 
       const marketPrice =
-        historicalData[getAssetProfileIdentifier({ dataSource, symbol })][
+        historicalData[getAssetProfileIdentifier({ dataSource, symbol })]?.[
           format(date, DATE_FORMAT)
-        ].marketPrice;
+        ]?.marketPrice;
 
       if (marketPrice) {
         return await this.prismaService.marketData.upsert({