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Published September 1985 | public
Journal Article

A note on the geometry of Shanken's CSR T_2 test for mean/variance efficiency

Roll, Richard

Abstract

Shanken (1985) derives a test for the zero-beta capital asset pricing model (CAPM) which, as he points out, is equivalent to a test of the mean/variance efficiency of the market portfolio. This note illustrates the geometry of Shanken's test in the mean/variance space.

Additional Information

© 1985 Published by Elsevier B.V. The comments and suggestions of Chi-Cheng Hsia, Bob Korkie, and Jay Shanken are gratefully acknowledged.

Additional details

Created:
August 19, 2023
Modified:
October 20, 2023