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The Conditional CAPM does not Explain Asset-Pricing Anamolies

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NBER2003-09-01 更新2025-01-04 收录
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https://www.nber.org/papers/w9974
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Recent studies suggest that the conditional CAPM might hold, period-by-period, and that time-varying betas can explain the failures of the simple, unconditional CAPM. We argue, however, that significant departures from the unconditional CAPM would require implausibly large time-variation in betas
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2003-09-01
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