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Sensitivity of Multivariate Tests of the Capital Asset-Pricing Model to the Return Measurement Interval
Authors:PUNEET HANDA  S. P. KOTHARI  CHARLES WASLEY
Abstract:The capital asset-pricing model's (CAPM) primary empirical implication is a positively sloped linear relation between a security's expected rate of return and its relative risk (beta). Recent research indicates that inferences about the risk-return relation are sensitive to the choice of the return measurement interval. We perform multivariate tests of the Sharpe-Lintner CAPM using monthly and annual returns on market-value-ranked portfolios. The CAPM is rejected using monthly returns, a result consistent with previous research. In contrast, we fail to reject the CAPM when annual holding period returns are used.
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