My job market paper is a consumption-based study of price momentum. I model the cross section of equity securities inside a long-run risks economy of Bansal and Yaron (2004). Consistent with the implications of the model, I show a new empirical stylized fact: momentum portfolios have time-varying long-run consumption betas and time-varying expected returns. Simulations of a firm-level model produce a substantial momentum effect while simultaneously generating a large equity premium and matching other relevant moments of the data such as transitions of securities across momentum portfolios.

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