作者: Robert A. Korajczyk , Gregory Connor
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摘要: This article examines the risk and return characteristics of U.S. mutual funds. We employ an equilibrium version Arbitrage Pricing Theory (APT) a principal-components-based statistical technique to identify performance benchmarks. also consider Capital Asset Model (CAPM) as alternative. implement procedure for overcoming rotational indeterminacy factor models. is hybrid estimation prespecification factors. estimate measures timing ability CAPM extend it APT. find that this test misspecified due noninformation-based changes in fund betas. develop modification measure that, under certain conditions, distinguishes true from beta changes.