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Please use this identifier to cite or link to this item: http://hdl.handle.net/2451/27428

Title: A First Look at the Accuracy of the CRSP Mutual Fund Database and a Comparison of the CRSP and Morningstar Mutual Fund Databases
Authors: Elton, Edwin J.
Gruber, Martin J.
Blake, Christopher R.
Issue Date: 2001
Series/Report no.: S-AM-01-09
Abstract: This paper examines problems in the CRSP Survivor Bias Free U.S. Mutual Fund Database (CRSP, 1998) and compares returns contained in it to those in Morningstar. The CRSP database has an omission bias that has the same effects as survivorship bias. Although all mutual funds are listed in CRSP, return data is missing for many and the characteristics of these funds differ from the populations. The CRSP return data is biased upward and merger months are inaccurately recorded about half the time. Differences in returns in Morningstar and CRSP are a problem for older data and small funds.
URI: http://hdl.handle.net/2451/27428
Appears in Collections:Asset Management

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