Fix response of historical market data gathering for a specific date

apps/api/src/app/admin/admin.controller.ts

@@ -213,11 +213,20 @@ export class AdminController {
       );
     }
 
-    return this.dataGatheringService.gatherSymbolForDate({
+    const marketData = await this.dataGatheringService.gatherSymbolForDate({
       dataSource,
       date,
       symbol
     });
+
+    if (!marketData) {
+      throw new HttpException(
+        getReasonPhrase(StatusCodes.NOT_FOUND),
+        StatusCodes.NOT_FOUND
+      );
+    }
+
+    return marketData;
   }
 
   @HasPermission(permissions.accessAdminControl)

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

@@ -219,5 +219,34 @@ describe('DataGatheringService', () => {
         })
       );
     });
+
+    it('returns the upserted market data', async () => {
+      dataProviderService.getHistoricalRaw.mockResolvedValue({
+        'YAHOO-AAPL': {
+          '2026-08-22': { marketPrice: 100 }
+        }
+      });
+      prismaService.marketData.upsert.mockResolvedValue({ marketPrice: 100 });
+
+      const marketData = await dataGatheringService.gatherSymbolForDate({
+        dataSource: 'YAHOO',
+        date: parseDate('2026-08-22'),
+        symbol: 'AAPL'
+      });
+
+      expect(marketData).toEqual({ marketPrice: 100 });
+    });
+
+    it('returns undefined if the data provider has no market price', async () => {
+      dataProviderService.getHistoricalRaw.mockResolvedValue({});
+
+      const marketData = await dataGatheringService.gatherSymbolForDate({
+        dataSource: 'YAHOO',
+        date: parseDate('2026-08-22'),
+        symbol: 'AAPL'
+      });
+
+      expect(marketData).toBeUndefined();
+    });
   });
 });

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

@@ -349,9 +349,9 @@ export class DataGatheringService {
       }
     } catch (error) {
       this.logger.error(error.message);
-    } finally {
-      return undefined;
     }
+
+    return undefined;
   }
 
   public async gatherSymbols({