diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9ef57d192..6d374dc23c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Fixed the visibility of the asset class, asset sub class, fee and quantity fields of a valuable in the create activity dialog
 - Fixed the missing mapping for Aland Islands in the country weightings of the _Financial Modeling Prep_ service
+- Fixed the net performance percentage of date ranges in the portfolio performance calculation by weighting the average investment by the number of days between the chart dates
 
 ## 3.80.2 - 2026-10-06