Should Investors Avoid All Actively Managed Mutual Funds? A Study in Bayesian Performance Evaluation
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- Author(s): Klaas P. Baks, Andrew Metrick, Jessica Wachter
- Published: Dec 17, 2002
- Pages: 45-85
- DOI: 10.1111/0022-1082.00319
This paper analyzes mutual‐fund performance from an investor's perspective. We study the portfolio‐choice problem for a mean‐variance investor choosing among a risk‐free asset, index funds, and actively managed mutual funds. To solve this problem, we employ a Bayesian method of performance evaluation; a key innovation in our approach is the development of a flexible set of prior beliefs about managerial skill. We then apply our methodology to a sample of 1,437 mutual funds. We find that some extremely skeptical prior beliefs nevertheless lead to economically significant allocations to active managers.