We propose that fund performance can be predicted by its R-super-2, obtained from a regression of its returns on a multifactor benchmark model. Lower R-super-2 indicates greater selectivity, and it significantly predicts better performance. Stock funds sorted into lowest-quintile lagged...

Portfolio optimization focuses on risk and return prediction, yet implementation costs critically matter. Predicting trading costs is challenging because costs depend on trade size and trader identity, thus impeding a generic solution. We focus on a component of trading costs that applies...