Performance Measurement Via Random Portfolios
23 Pages Posted: 11 Dec 2004
Date Written: December 2, 2004
Abstract
Problems with performance measurement using information ratios relative to a benchmark are exposed. Random portfolios (that obey constraints but disregard utility) are shown to measure investment skill effectively. Investment mandates can also be based on random portfolios - this allows active fund managers more freedom to implement their ideas, and provides the investor more flexibility to gain utility. The issue of the proper attitude towards tracking error is broached, but left largely undecided. There is also a critique of Fisher's method of combining p-values that shows Stouffer's method to be preferable.
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