Fix currency of cash balance update on activity creation

CHANGELOG.md

@@ -19,6 +19,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed the missing mapping for Czech Republic and Turkey in the data enhancer for asset profile data via _Yahoo Finance_
 - Resolved an error when fetching dividends from _Yahoo Finance_ for date ranges without events
 
+### Fixed
+
+- Fixed the currency of the cash balance update when creating an activity to use the activity's currency instead of the asset profile's currency
+
 ## 3.49.0 - 2026-08-12
 
 ### Changed

apps/api/src/app/activities/activities.service.ts

@@ -308,7 +308,8 @@ export class ActivitiesService {
         accountId,
         userId,
         amount: amount.toNumber(),
-        currency: data.SymbolProfile.connectOrCreate.create.currency,
+        currency:
+          data.currency ?? data.SymbolProfile.connectOrCreate.create.currency,
         date: data.date as Date
       });
     }