Update changelog

CHANGELOG.md

@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Fixed
+
+- Fixed an issue where the dividends, the interest and the liabilities of asset profiles without market data have been valued at zero in the portfolio calculation
+- Fixed an issue where an error has been reported for asset profiles without market data which do not hold any units
+
 ## 3.27.0 - 2026-07-15
 
 ### Changed