Feature/introduce Promise.all() in getPerformance() of portfolio service (#4381)

* Introduce Promise.all()

* Update changelog

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Optimized the asynchronous operations using `Promise.all()` in the portfolio service (`getPerformance`)
 - Improved the symbol lookup in the _Trackinsight_ data enhancer for asset profile data
 
 ### Fixed

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

@@ -1081,19 +1081,18 @@ export class PortfolioService {
     const user = await this.userService.user({ id: userId });
     const userCurrency = this.getUserCurrency(user);
 
-    const accountBalanceItems =
-      await this.accountBalanceService.getAccountBalanceItems({
+    const [accountBalanceItems, { activities }] = await Promise.all([
+      this.accountBalanceService.getAccountBalanceItems({
         filters,
         userId,
         userCurrency
-      });
-
-    const { activities } =
-      await this.orderService.getOrdersForPortfolioCalculator({
+      }),
+      this.orderService.getOrdersForPortfolioCalculator({
         filters,
         userCurrency,
         userId
-      });
+      })
+    ]);
 
     if (accountBalanceItems.length === 0 && activities.length === 0) {
       return {