Value stocks outperform growth stocks. The academic literature provides two competing interpretations on what drives the value premium: exposure to risk factors or mispricing of securities. Existing empirical studies, which are largely based on U.S. data, have not conclusively rejected one...

Twenty years ago there were only five equity factors (market, value, small-cap, momentum, and low beta). Today the literature contains research papers on hundreds of supposed factors, most of which will not produce a reliable positive premium in the future. Rather than adopting a statistical...