The change is based on “Modified Dietz” – a well-known formula which will be easier to understand and provide better calculation of your performance.
The Modified Dietz is an industry standard method for calculating performance of an investment portfolio over time.
This method is best known for handling external cash flow occurrences within the time period.
To learn more on Modified Dietz you can read this Wikipedia term.
More information will be provided once we update the new gain calculation.