This is a new research paper published on January 22nd 2015 that studies the return of stocks based upon the size (defined in multiple ways). What was done differently than other studies, was that the authors used a Quality and Junk variable to apply to the data. The result was that smaller firms outperformed larger firms in the stock market if the portfolio was controlled with the QMJ (Quality Minus Junk) factor. Meaning that a lot of the smaller companies were “junk” but the ones that were of quality outperformed the market. The Authors: Clifford S. Asness – AQR Capital...