We show that the stock market downturns of 2000-2002 and 2007-2009 have very different proximate causes. The early 2000's saw a large increase in the discount rates applied to profits by rational investors, while the late 2000's saw a decrease in rational expectations of future profits. We reach...

This paper shows that the stock market downturns of 2000-2002 and 2007-09 have very different proximate causes. The early 2000's saw a large increase in the discount rates applied to corporate profits by rational investors, while the late 2000's saw a decrease in rational expectations of future...

This paper studies the pricing of volatility risk using the first-order conditions of a long-term equity investor who is content to hold the aggregate equity market rather than tilting towards value stocks and other equity portfolios that are attractive to short-term investors. We show that a...

We show that the stock market downturns of 2000-2002 and 2007-2009 have very different proximate causes. The early 2000's saw a large increase in the discount rates applied to profits by rational investors, while the late 2000's saw a decrease in rational expectations of future profits. We reach...

The cash flows of growth stocks are particularly sensitive to temporary movements in aggregate stock prices (driven by movements in the equity risk premium), while the cash flows of value stocks are particularly sensitive to permanent movements in aggregate stock prices (driven by market-wide...

Most previous research tests market efficiency and asset pricing models using average abnormal trading profits on dynamic trading strategies, and typically rejects the joint hypothesis. In contrast, we measure the ability of a simple risk model and the efficient-market hypothesis to explain the...

If investors are myopic mean-variance optimizers, a stock's expected return is linearly related to its beta in the cross section. The slope of the relation is the cross-sectional price of risk, which should equal the expected equity premium. We use this simple observation to forecast the...

We study how stock market mispricing might in uence individual firms' investment decisions. We find a positive relation between investment and a number of proxies for mispricing, controlling for investment opportunities and financial slack, suggesting that overpriced (underpriced) firms tend to...

Modigliani and Cohn's (1979) hypothesis suggests that time-variation in the level of inflation causes the market's subjective expectation of the future equity premium to deviate systematically from the rational expectation. When inflation is high (low), the rational equity-premium expectation is...