We find that small innovators earn higher returns than small non-innovators for up to five years. We find no such innovation premium among large firms. A battery of tests shows that this innovation premium among small firms is explained by risk. Our findings, which are based on a simple measure...

The curvature of intramonth stock price paths, which is distinct from cumulative return over the same period, contains significant additional return predictive power. In the cross section, stocks with the least convex price paths subsequently outperform stocks with the most convex price paths....