Interactive Brokers also uses TWR to calculate returns. Currently for the same portfolio, it is showing -9.78% (1yr) whilst StocksCafe is showing only -5.84% (last 365 days). Why is there such a big difference?
Hmm… Not sure how IR is computing but I am happy to share how StocksCafe computes.
Let me build a feature that will allow users to see the numbers behind the TWR computation.