diff --git a/apps/api/src/app/portfolio/portfolio.service.spec.ts b/apps/api/src/app/portfolio/portfolio.service.spec.ts
index 28747bde9..12fe7ad61 100644
--- a/apps/api/src/app/portfolio/portfolio.service.spec.ts
+++ b/apps/api/src/app/portfolio/portfolio.service.spec.ts
@@ -39,6 +39,16 @@ describe('PortfolioService', () => {
       })
     ).toBeCloseTo(0.05);
 
+    /**
+     * Source: https://www.readyratios.com/reference/analysis/annualized_rate.html
+     */
+    expect(
+      portfolioService.getAnnualizedPerformancePercent({
+        daysInMarket: 65,
+        netPerformancePercent: 0.1025
+      })
+    ).toBeCloseTo(0.729705);
+
     /**
      * Source: https://www.investopedia.com/terms/a/annualized-total-return.asp#annualized-return-formula-and-calculation
      */