We provide some new tools to evaluate trading strategies. When it is known that many strategies and combinations of strategies have been tried, we need to adjust our evaluation method for these multiple tests. Sharpe Ratios and other statistics will be overstated. Our methods are simple to...

Our paper explores the link between cross-sectional fund return dispersion and performance evaluation. The foundation of our model is the simple intuition that in periods of high return dispersion, which is associated with high levels of idiosyncratic risk for zero-alpha funds, it is easier for...

Hundreds of papers and hundreds of factors attempt to explain the cross-section of expected returns. Given this extensive data mining, it does not make any economic or statistical sense to use the usual significance criteria for a newly discovered factor, e.g., a t-ratio greater than 2.0....

Uncertainty about manager skill and diversification constraints are hallmarks of investing in alternative assets. This paper quantifies the utility losses to private equity investors arising from these frictions. When calibrated to the data on institutional allocations to private equity and...

I examine moment characteristics and predictability assumptions of dynamic asset pricing models. I propose a new measure --- the generalized entropy --- to summarize moment information of the multi-horizon pricing kernel for a dynamic model. Both static and dynamic strategy returns impose robust...