Bugfix/fix issue in annualized performance calculation (#4840)

* Fix issue in annualized performance calculation

* Update changelog

CHANGELOG.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fixed an issue where the import button was not correctly enabled in the import activities dialog
+- Fixed an issue in the annualized performance calculation
 
 ## 2.166.0 - 2025-06-05
 

libs/common/src/lib/calculation-helper.ts

@@ -23,10 +23,14 @@ export function getAnnualizedPerformancePercent({
 }): Big {
   if (isNumber(daysInMarket) && daysInMarket > 0) {
     const exponent = new Big(365).div(daysInMarket).toNumber();
+    const growthFactor = Math.pow(
+      netPerformancePercentage.plus(1).toNumber(),
+      exponent
+    );
 
-    return new Big(
-      Math.pow(netPerformancePercentage.plus(1).toNumber(), exponent)
-    ).minus(1);
+    if (!isNaN(growthFactor)) {
+      return new Big(growthFactor).minus(1);
+    }
   }
 
   return new Big(0);