Abstract
Most previous research evaluates market efficiency and asset pricing models using average abnormal trading profits on dynamic trading strategies. We measure the ability of the capital asset pricing model (CAPM) and the efficient-market hypothesis to explain the level of stock prices. First, we find that cash-flow betas (measured by regressing firms' earnings on the market's earnings) explain the prices of value and growth stocks well, with a plausible premium. Second, we use a present-value model to decompose the cross-sectional variance of firms' price-to-book ratios into two components due to risk-adjusted fundamental value and mispricing. When we allow the discount rates to vary as predicted by the CAPM, the variance share of mispricing is negligible.
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