diff --git a/apps/api/src/app/portfolio/interfaces/timeline-period.interface.ts b/apps/api/src/app/portfolio/interfaces/timeline-period.interface.ts
index a26bc0c15..0031d50d3 100644
--- a/apps/api/src/app/portfolio/interfaces/timeline-period.interface.ts
+++ b/apps/api/src/app/portfolio/interfaces/timeline-period.interface.ts
@@ -4,5 +4,6 @@ export interface TimelinePeriod {
   date: string;
   grossPerformance: Big;
   investment: Big;
+  netPerformance: Big;
   value: Big;
 }
diff --git a/apps/api/src/app/portfolio/portfolio-calculator.ts b/apps/api/src/app/portfolio/portfolio-calculator.ts
index 60facc686..52cd4e8e7 100644
--- a/apps/api/src/app/portfolio/portfolio-calculator.ts
+++ b/apps/api/src/app/portfolio/portfolio-calculator.ts
@@ -522,7 +522,7 @@ export class PortfolioCalculator {
       }
     }
 
-    const results = [];
+    const results: TimelinePeriod[] = [];
     for (
       let currentDate = startDate;
       isBefore(currentDate, endDate);
@@ -546,10 +546,11 @@ export class PortfolioCalculator {
       }
       if (!invalid) {
         const result = {
+          investment,
+          value,
           date: currentDateAsString,
           grossPerformance: value.minus(investment),
-          investment,
-          value
+          netPerformance: new Big(0) // TODO
         };
         results.push(result);
       }
diff --git a/apps/api/src/app/portfolio/portfolio.service.ts b/apps/api/src/app/portfolio/portfolio.service.ts
index a3dba2524..3b9eee95c 100644
--- a/apps/api/src/app/portfolio/portfolio.service.ts
+++ b/apps/api/src/app/portfolio/portfolio.service.ts
@@ -148,7 +148,7 @@ export class PortfolioService {
       .map((timelineItem) => ({
         date: timelineItem.date,
         marketPrice: timelineItem.value,
-        value: timelineItem.grossPerformance.toNumber()
+        value: timelineItem.netPerformance.toNumber()
       }));
   }