diff --git a/apps/api/src/app/core/portfolio-calculator.spec.ts b/apps/api/src/app/core/portfolio-calculator.spec.ts
index 5c87c29f0..cd7ae8bbb 100644
--- a/apps/api/src/app/core/portfolio-calculator.spec.ts
+++ b/apps/api/src/app/core/portfolio-calculator.spec.ts
@@ -32,7 +32,7 @@ function dateEqual(date1: Date, date2: Date) {
   );
 }
 
-jest.mock('./current-rate.service.ts', () => {
+jest.mock('@ghostfolio/api/app/core/current-rate.service', () => {
   return {
     // eslint-disable-next-line @typescript-eslint/naming-convention
     CurrentRateService: jest.fn().mockImplementation(() => {
@@ -546,7 +546,9 @@ describe('PortfolioCalculator', () => {
           symbol: 'VTI',
           investment: new Big('4460.95'),
           marketPrice: new Big('213.32'),
-          transactionCount: 5
+          transactionCount: 5,
+          grossPerformance: new Big('872.05'), // 213.32*25-4460.95
+          grossPerformancePercentage: new Big('0.19548526659119694236') // 872.05/4460.95
         }
       });
     });
diff --git a/apps/api/src/app/core/portfolio-calculator.ts b/apps/api/src/app/core/portfolio-calculator.ts
index 11cd13ecb..f0ceece4b 100644
--- a/apps/api/src/app/core/portfolio-calculator.ts
+++ b/apps/api/src/app/core/portfolio-calculator.ts
@@ -121,6 +121,9 @@ export class PortfolioCalculator {
         currency: item.currency,
         userCurrency: this.currency
       });
+      const grossPerformance = new Big(marketValue.marketPrice)
+        .mul(item.quantity)
+        .minus(item.investment);
       result[item.symbol] = {
         averagePrice: item.investment.div(item.quantity),
         firstBuyDate: item.firstBuyDate,
@@ -128,7 +131,9 @@ export class PortfolioCalculator {
         symbol: item.symbol,
         investment: item.investment,
         marketPrice: marketValue.marketPrice,
-        transactionCount: item.transactionCount
+        transactionCount: item.transactionCount,
+        grossPerformance,
+        grossPerformancePercentage: grossPerformance.div(item.investment)
       };
     }
 
@@ -290,6 +295,8 @@ interface TimelinePosition {
   quantity: Big;
   symbol: string;
   investment: Big;
+  grossPerformancePercentage: Big;
+  grossPerformance: Big;
   marketPrice: number;
   transactionCount: number;
 }