Habit, Production, and the Cross-Section of Stock Returns

Solutions to the equity premium puzzle should inform us about the cross-section of stock returns. An external habit model with heterogeneous firms reproduces numerous stylized facts about both the equity premium and the value premium. The equity premium is large, time-varying, and linked with consumption volatility. The cross-section of expected returns is log-linear in B/M, and the slope matches the data. The explanation for the value premium lies in the interaction between the cross-section of cash flows and the time-varying risk premium. Value firms are temporarily low productivity firms, which will eventually experience high cash flows. The present value of these temporally distant cash flows is sensitive to risk premium movements. The value premium is the reward for bearing this sensitivity. Empirical evidence verifies that value firms have higher cash-flow growth. The data also show that value stock returns are more sensitive to risk premium movements, as measured by consumption volatility shocks.