Bugfix/net performance in positions endpoint (#377)

* Nullify net performance

* Update changelog

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
-- Hid the net performance in the _Presenter View_ (portfolio summary tab on the home page)
+- Hid the net performance in the _Presenter View_ (portfolio holdings and summary tab on the home page)
 - Hid the sign if the performance is zero in the value component
 
 ## 1.53.0 - 13.09.2021

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

@@ -223,6 +223,7 @@ export class PortfolioController {
         return nullifyValuesInObject(position, [
           'grossPerformance',
           'investment',
+          'netPerformance',
           'quantity'
         ]);
       });