From b7520735bd7bea4e50efa44f43aca5cc39276a7d Mon Sep 17 00:00:00 2001
From: Thomas Kaul <4159106+dtslvr@users.noreply.github.com>
Date: Sat, 5 Sep 2026 10:01:05 +0200
Subject: [PATCH] Bugfix/market data storage in data provider service (#7814)

* Fix storage of market data to store only newly fetched quotes

* Update changelog
---
 CHANGELOG.md                                  |  1 +
 .../data-provider/data-provider.service.ts    | 24 ++++++++++++++-----
 2 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index f020cbf21..7a46165fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fixed the data provider information in the holding detail dialog
+- Fixed the storage of the market data in the data provider service to only include the newly fetched quotes
 - Fixed the immediate expiration of a portfolio snapshot with errors
 - Fixed the missing country mapping of _Congo (Dem. Rep. of the)_ and _Congo (Rep. of)_ in the _Financial Modeling Prep_ service
 
diff --git a/apps/api/src/services/data-provider/data-provider.service.ts b/apps/api/src/services/data-provider/data-provider.service.ts
index 9366574ac..0417315d4 100644
--- a/apps/api/src/services/data-provider/data-provider.service.ts
+++ b/apps/api/src/services/data-provider/data-provider.service.ts
@@ -725,6 +725,10 @@ export class DataProviderService implements OnModuleInit {
 
         promises.push(
           promise.then(async (result) => {
+            const fetchedQuotes: (DataProviderResponse & {
+              symbol: string;
+            })[] = [];
+
             for (const [symbol, dataProviderResponse] of Object.entries(
               result
             )) {
@@ -739,12 +743,16 @@ export class DataProviderService implements OnModuleInit {
                 continue;
               }
 
+              const quote = { ...dataProviderResponse, symbol };
+
+              fetchedQuotes.push(quote);
+
               response[
                 getAssetProfileIdentifier({
                   symbol,
                   dataSource: DataSource[dataSource]
                 })
-              ] = { ...dataProviderResponse, symbol };
+              ] = quote;
 
               this.redisCacheService.set(
                 this.redisCacheService.getQuoteKey({
@@ -772,15 +780,19 @@ export class DataProviderService implements OnModuleInit {
                     marketState: 'open'
                   };
 
+                  const derivedQuote = {
+                    ...derivedDataProviderResponse,
+                    symbol: `${DEFAULT_CURRENCY}${currency}`
+                  };
+
+                  fetchedQuotes.push(derivedQuote);
+
                   response[
                     getAssetProfileIdentifier({
                       dataSource: DataSource[dataSource],
                       symbol: `${DEFAULT_CURRENCY}${currency}`
                     })
-                  ] = {
-                    ...derivedDataProviderResponse,
-                    symbol: `${DEFAULT_CURRENCY}${currency}`
-                  };
+                  ] = derivedQuote;
 
                   this.redisCacheService.set(
                     this.redisCacheService.getQuoteKey({
@@ -805,7 +817,7 @@ export class DataProviderService implements OnModuleInit {
 
             try {
               await this.marketDataService.updateMany({
-                data: Object.values(response)
+                data: fetchedQuotes
                   .filter(({ marketPrice, marketState }) => {
                     return (
                       isNumber(marketPrice) &&