The cross section of returns can largely be summarized by the market factor and mimicking portfolios based on investment-to-assets and earnings-to-assets motivated from neoclassical reasoning. The neoclassical three-factor model can capture average return variations related to momentum and...

The q-factor model shows strong explanatory power and largely summarizes the cross section of average stock returns. In particular, the q-factor model fully subsumes the Fama-French (2018) 6-factor model in head-to-head factor spanning tests. The q-factor model is an empirical implementation of...