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The Constrainted Asset Share Estimation (CASE) Method: Testing Mean-Variance Efficiency of the U.S. Stock Market

Author

Listed:
  • Engel, Charles
  • Frankel, Jeffrey A.
  • Froot, Kenneth A.
  • Rodrigues, Anthony

Abstract

We apply the method of constrained asset share estimation (CASE) to test the mean-variance efficiency (MVE) of the stock market. This method allows conditional expected returns to vary in relatively unrestricted ways. The data estimate reasonably the price of risk, and, in some cases, the MVE model is valuable in explaining expected equity returns. Unlike with most tests of MVE. we can put an explicit interpretation on the alternative hypothesis -- a general linear Tobin portfolio choice model. We reject the restrictions implied by MVE.
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Suggested Citation

  • Engel, Charles & Frankel, Jeffrey A. & Froot, Kenneth A. & Rodrigues, Anthony, 1990. "The Constrainted Asset Share Estimation (CASE) Method: Testing Mean-Variance Efficiency of the U.S. Stock Market," Department of Economics, Working Paper Series qt3xh3d7xn, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    • Handle: RePEc:cdl:econwp:qt3xh3d7xn
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    Cited by:

    1. Andrew Clare & Raymond O'Brien & Peter Smith & Stephen Thomas, 1996. "Global macroeconomic shocks, time-varying covariances and tests of the international CAPM," Applied Economics Letters, Taylor & Francis Journals, vol. 3(2), pages 109-113.

    More about this item

    Keywords

    CAPM; stock market; portfolio-balance; mean variance efficiency; Social and Behavioral Sciences;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates

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