Task/deprecate activities in portfolio holding response (#6147)

* Deprecate activities

* Update changelog

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Deprecated `activities` in the endpoint `GET api/v1/portfolio/holding/:dataSource/:symbol`
+
 ## 2.228.0 - 2026-01-03
 
 ### Added

libs/common/src/lib/interfaces/responses/portfolio-holding-response.interface.ts

@@ -9,7 +9,9 @@ import {
 import { Tag } from '@prisma/client';
 
 export interface PortfolioHoldingResponse {
+  /** @deprecated */
   activities: Activity[];
+
   activitiesCount: number;
   averagePrice: number;
   dataProviderInfo: DataProviderInfo;