diff --git a/apps/api/src/app/activities/activities.controller.ts b/apps/api/src/app/activities/activities.controller.ts
index 8b42514f8..6b0440dc4 100644
--- a/apps/api/src/app/activities/activities.controller.ts
+++ b/apps/api/src/app/activities/activities.controller.ts
@@ -13,7 +13,6 @@ import {
   HEADER_KEY_IMPERSONATION
 } from '@ghostfolio/common/config';
 import { CreateOrderDto, UpdateOrderDto } from '@ghostfolio/common/dtos';
-import { splitStringToArray } from '@ghostfolio/common/helper';
 import {
   ActivitiesResponse,
   ActivityResponse
@@ -124,10 +123,6 @@ export class ActivitiesController {
     @Query('tags') filterByTags?: string,
     @Query('take') take?: number
   ): Promise<ActivitiesResponse> {
-    const types = filterByTypes
-      ? (splitStringToArray(filterByTypes) as ActivityType[])
-      : undefined;
-
     let endDate: Date;
     let startDate: Date;
 
@@ -145,6 +140,9 @@ export class ActivitiesController {
 
     const impersonationUserId =
       await this.impersonationService.validateImpersonationId(impersonationId);
+
+    const types = (filterByTypes?.split(',') as ActivityType[]) ?? [];
+
     const userCurrency = this.request.user.settings.settings.baseCurrency;
 
     const { activities, count } = await this.activitiesService.getActivities({
diff --git a/apps/api/src/app/activities/activities.service.ts b/apps/api/src/app/activities/activities.service.ts
index 89b9468f8..58b9c11a4 100644
--- a/apps/api/src/app/activities/activities.service.ts
+++ b/apps/api/src/app/activities/activities.service.ts
@@ -629,7 +629,7 @@ export class ActivitiesService {
       orderBy = [{ [sortColumn]: sortDirection }];
     }
 
-    if (types) {
+    if (types?.length > 0) {
       where.type = { in: types };
     }
 
diff --git a/apps/api/src/app/export/export.controller.ts b/apps/api/src/app/export/export.controller.ts
index 6d31b6700..4f4f4e6dd 100644
--- a/apps/api/src/app/export/export.controller.ts
+++ b/apps/api/src/app/export/export.controller.ts
@@ -2,7 +2,6 @@ import { HasPermissionGuard } from '@ghostfolio/api/guards/has-permission.guard'
 import { TransformDataSourceInRequestInterceptor } from '@ghostfolio/api/interceptors/transform-data-source-in-request/transform-data-source-in-request.interceptor';
 import { TransformDataSourceInResponseInterceptor } from '@ghostfolio/api/interceptors/transform-data-source-in-response/transform-data-source-in-response.interceptor';
 import { ApiService } from '@ghostfolio/api/services/api/api.service';
-import { splitStringToArray } from '@ghostfolio/common/helper';
 import { ExportResponse } from '@ghostfolio/common/interfaces';
 import type { RequestWithUser } from '@ghostfolio/common/types';
 
@@ -41,10 +40,9 @@ export class ExportController {
     @Query('symbol') filterBySymbol?: string,
     @Query('tags') filterByTags?: string
   ): Promise<ExportResponse> {
-    const activityIds = splitStringToArray(filterByActivityIds);
-    const activityTypes = filterByTypes
-      ? (splitStringToArray(filterByTypes) as ActivityType[])
-      : undefined;
+    const activityIds = filterByActivityIds?.split(',') ?? [];
+    const activityTypes = (filterByTypes?.split(',') as ActivityType[]) ?? [];
+
     const filters = this.apiService.buildFiltersFromQueryParams({
       filterByAccounts,
       filterByAssetClasses,
diff --git a/apps/api/src/services/api/api.service.ts b/apps/api/src/services/api/api.service.ts
index db0e71c04..052119246 100644
--- a/apps/api/src/services/api/api.service.ts
+++ b/apps/api/src/services/api/api.service.ts
@@ -1,4 +1,3 @@
-import { splitStringToArray } from '@ghostfolio/common/helper';
 import { Filter } from '@ghostfolio/common/interfaces';
 
 import { Injectable } from '@nestjs/common';
@@ -24,14 +23,14 @@ export class ApiService {
     filterBySymbol?: string;
     filterByTags?: string;
   }): Filter[] {
-    const accountIds = splitStringToArray(filterByAccounts);
-    const assetClasses = splitStringToArray(filterByAssetClasses);
-    const assetSubClasses = splitStringToArray(filterByAssetSubClasses);
+    const accountIds = filterByAccounts?.split(',') ?? [];
+    const assetClasses = filterByAssetClasses?.split(',') ?? [];
+    const assetSubClasses = filterByAssetSubClasses?.split(',') ?? [];
     const dataSource = filterByDataSource;
     const holdingType = filterByHoldingType;
     const searchQuery = filterBySearchQuery?.toLowerCase();
     const symbol = filterBySymbol;
-    const tagIds = splitStringToArray(filterByTags);
+    const tagIds = filterByTags?.split(',') ?? [];
 
     const filters = [
       ...accountIds.map((accountId) => {
diff --git a/apps/client/src/app/pages/portfolio/activities/activities-page.component.ts b/apps/client/src/app/pages/portfolio/activities/activities-page.component.ts
index 4e8c98955..4c1d26b70 100644
--- a/apps/client/src/app/pages/portfolio/activities/activities-page.component.ts
+++ b/apps/client/src/app/pages/portfolio/activities/activities-page.component.ts
@@ -141,11 +141,11 @@ export class GfActivitiesPageComponent implements OnInit {
 
     this.dataService
       .fetchActivities({
+        range,
         activityTypes: this.activityTypesFilter.length
           ? this.activityTypesFilter
           : undefined,
         filters: this.userService.getFilters(),
-        range,
         skip: this.pageIndex * this.pageSize,
         sortColumn: this.sortColumn,
         sortDirection: this.sortDirection,
diff --git a/libs/common/src/lib/helper.spec.ts b/libs/common/src/lib/helper.spec.ts
index e794799a8..a339c6dab 100644
--- a/libs/common/src/lib/helper.spec.ts
+++ b/libs/common/src/lib/helper.spec.ts
@@ -1,7 +1,6 @@
 import {
   extractNumberFromString,
-  getNumberFormatGroup,
-  splitStringToArray
+  getNumberFormatGroup
 } from '@ghostfolio/common/helper';
 
 describe('Helper', () => {
@@ -117,22 +116,4 @@ describe('Helper', () => {
       expect(getNumberFormatGroup()).toEqual(',');
     });
   });
-
-  describe('splitStringToArray', () => {
-    it('should split a comma-separated string', () => {
-      expect(splitStringToArray('a,b,c')).toEqual(['a', 'b', 'c']);
-    });
-
-    it('should return a single-element array for a string without commas', () => {
-      expect(splitStringToArray('a')).toEqual(['a']);
-    });
-
-    it('should return an empty array for undefined', () => {
-      expect(splitStringToArray(undefined)).toEqual([]);
-    });
-
-    it('should return an empty array for no argument', () => {
-      expect(splitStringToArray()).toEqual([]);
-    });
-  });
 });
diff --git a/libs/common/src/lib/helper.ts b/libs/common/src/lib/helper.ts
index 6e5e8e6a4..4db1fcf2d 100644
--- a/libs/common/src/lib/helper.ts
+++ b/libs/common/src/lib/helper.ts
@@ -474,7 +474,3 @@ export function resolveMarketCondition(
     return { emoji: undefined };
   }
 }
-
-export function splitStringToArray(aString?: string): string[] {
-  return aString?.split(',') ?? [];
-}