Profitability, Growth, and Average Returns

Abstract

Valuation theory says that expected stock returns are related to three variables: the book-to-market equity ratio (B/M), expected profitability, and expected investment. Given B/M and expected profitability, higher rates of investment imply lower expected returns. But controlling for the other two variables, more profitable firms have higher expected returns, as do firms with higher B/M. These predictions are confirmed in our tests. Our results are qualitatively similar to earlier evidence, but in quantitative (economic) terms, there are some interesting surprises.