diff --git a/CHANGELOG.md b/CHANGELOG.md
index d28e8145e..e218c0329 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Removed the deprecated `SymbolProfile` field from the activity interface
 - Improved the language localization for German (`de`)
 
 ## 3.28.0 - 2026-07-17
diff --git a/apps/api/src/app/activities/activities.service.ts b/apps/api/src/app/activities/activities.service.ts
index df616a5dd..459293abd 100644
--- a/apps/api/src/app/activities/activities.service.ts
+++ b/apps/api/src/app/activities/activities.service.ts
@@ -499,23 +499,6 @@ export class ActivitiesService {
           id: balanceItem.id,
           isDraft: false,
           quantity: 1,
-          SymbolProfile: {
-            activitiesCount: 0,
-            assetClass: AssetClass.LIQUIDITY,
-            assetSubClass: AssetSubClass.CASH,
-            countries: [],
-            createdAt: new Date(balanceItem.date),
-            currency: account.currency,
-            dataSource:
-              this.dataProviderService.getDataSourceForExchangeRates(),
-            holdings: [],
-            id: account.currency,
-            isActive: true,
-            name: account.currency,
-            sectors: [],
-            symbol: account.currency,
-            updatedAt: new Date(balanceItem.date)
-          },
           symbolProfileId: account.currency,
           type: ActivityType.BUY,
           unitPrice: 1,
@@ -862,8 +845,7 @@ export class ActivitiesService {
           feeInBaseCurrency,
           unitPriceInAssetProfileCurrency,
           value,
-          valueInBaseCurrency,
-          SymbolProfile: assetProfile
+          valueInBaseCurrency
         };
       })
     );
diff --git a/apps/api/src/app/endpoints/public/public.controller.ts b/apps/api/src/app/endpoints/public/public.controller.ts
index a87d36218..9bd2a78a8 100644
--- a/apps/api/src/app/endpoints/public/public.controller.ts
+++ b/apps/api/src/app/endpoints/public/public.controller.ts
@@ -129,8 +129,7 @@ export class PublicController {
               type,
               unitPrice,
               value,
-              valueInBaseCurrency,
-              SymbolProfile: assetProfile
+              valueInBaseCurrency
             };
           }
         );
diff --git a/apps/api/src/app/import/import.service.ts b/apps/api/src/app/import/import.service.ts
index 07019e694..b706baa8d 100644
--- a/apps/api/src/app/import/import.service.ts
+++ b/apps/api/src/app/import/import.service.ts
@@ -153,7 +153,6 @@ export class ImportService {
             feeInBaseCurrency: 0,
             id: assetProfile.id,
             isDraft: false,
-            SymbolProfile: assetProfile,
             symbolProfileId: assetProfile.id,
             type: 'DIVIDEND',
             unitPrice: marketPrice,
@@ -623,9 +622,7 @@ export class ImportService {
         assetProfile,
         error,
         value,
-        valueInBaseCurrency,
-        // @ts-ignore
-        SymbolProfile: assetProfile
+        valueInBaseCurrency
       });
     }
 
diff --git a/apps/api/src/interceptors/transform-data-source-in-response/transform-data-source-in-response.interceptor.ts b/apps/api/src/interceptors/transform-data-source-in-response/transform-data-source-in-response.interceptor.ts
index 4e75ee9b7..6b38b2d54 100644
--- a/apps/api/src/interceptors/transform-data-source-in-response/transform-data-source-in-response.interceptor.ts
+++ b/apps/api/src/interceptors/transform-data-source-in-response/transform-data-source-in-response.interceptor.ts
@@ -80,10 +80,6 @@ export class TransformDataSourceInResponseInterceptor<
             paths: [
               'activities[*].assetProfile.dataSource',
               'activities[*].dataSource',
-
-              /* @deprecated */
-              'activities[*].SymbolProfile.dataSource',
-
               'assetProfile.dataSource',
               'benchmarks[*].dataSource',
               'errors[*].dataSource',
@@ -92,10 +88,6 @@ export class TransformDataSourceInResponseInterceptor<
               'holdings[*].assetProfile.dataSource',
               'holdings[*].dataSource',
               'items[*].dataSource',
-
-              /* @deprecated */
-              'SymbolProfile.dataSource',
-
               'watchlist[*].dataSource'
             ]
           });
diff --git a/libs/common/src/lib/config.ts b/libs/common/src/lib/config.ts
index f7bafb101..2340e02ed 100644
--- a/libs/common/src/lib/config.ts
+++ b/libs/common/src/lib/config.ts
@@ -113,13 +113,6 @@ export const DEFAULT_REDACTED_PATHS = [
   'activities[*].feeInAssetProfileCurrency',
   'activities[*].feeInBaseCurrency',
   'activities[*].quantity',
-
-  /* @deprecated */
-  'activities[*].SymbolProfile.symbolMapping',
-
-  /* @deprecated */
-  'activities[*].SymbolProfile.watchedByCount',
-
   'activities[*].value',
   'activities[*].valueInBaseCurrency',
   'balance',
@@ -150,13 +143,6 @@ export const DEFAULT_REDACTED_PATHS = [
   'platforms[*].balance',
   'platforms[*].valueInBaseCurrency',
   'quantity',
-
-  /* @deprecated */
-  'SymbolProfile.symbolMapping',
-
-  /* @deprecated */
-  'SymbolProfile.watchedByCount',
-
   'totalBalanceInBaseCurrency',
   'totalDividendInBaseCurrency',
   'totalInterestInBaseCurrency',
diff --git a/libs/common/src/lib/interfaces/activities.interface.ts b/libs/common/src/lib/interfaces/activities.interface.ts
index 1cc867d6e..66c310cf4 100644
--- a/libs/common/src/lib/interfaces/activities.interface.ts
+++ b/libs/common/src/lib/interfaces/activities.interface.ts
@@ -9,12 +9,6 @@ export interface Activity extends Order {
   error?: ActivityError;
   feeInAssetProfileCurrency: number;
   feeInBaseCurrency: number;
-
-  /**
-   * @deprecated Use `assetProfile` instead
-   */
-  SymbolProfile?: EnhancedSymbolProfile;
-
   tagIds?: string[];
   tags?: Tag[];
   unitPriceInAssetProfileCurrency: number;
diff --git a/libs/common/src/lib/interfaces/responses/public-portfolio-response.interface.ts b/libs/common/src/lib/interfaces/responses/public-portfolio-response.interface.ts
index 04c8e0c07..3302f635a 100644
--- a/libs/common/src/lib/interfaces/responses/public-portfolio-response.interface.ts
+++ b/libs/common/src/lib/interfaces/responses/public-portfolio-response.interface.ts
@@ -27,12 +27,6 @@ export interface PublicPortfolioResponse extends PublicPortfolioResponseV1 {
     'currency' | 'date' | 'fee' | 'quantity' | 'type' | 'unitPrice'
   > & {
     assetProfile?: EnhancedSymbolProfile;
-
-    /**
-     * @deprecated Use `assetProfile` instead
-     */
-    SymbolProfile?: EnhancedSymbolProfile;
-
     value: number;
     valueInBaseCurrency: number;
   })[];