We conjecture that a mutual fund manager with superior stock selection ability is more likely to benefit from trading in stocks affected by information-events. Taking the probability of informed trading (PIN, Easley, Kiefer, O'Hara, and Paperman, 1996) to measure the amount of informed trading in a stock, and inferring mutual fund trades from a large sample of mutual fund holdings, we provide empirical support for the conjecture. Funds trading high-PIN stocks exhibit superior performance on average, and superior performance that is more likely to persist. The findings are not due to price momentum or the higher returns earned by high-PIN stocks on average. Conclusions remain the same after testing for alternative measures for the amount of informed trading. Decomposing a fund's stock selection ability into "informed trading" and "liquidity provision" adds further insight into fund's underlying strengths. Impatient informed trading is a significant source of alpha for funds trading high-PIN stocks, while liquidity provision is more important as a source of alpha for funds trading low-PIN stocks.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
13625.
Length: Date of creation: Nov 2007 Date of revision: Handle: RePEc:nbr:nberwo:13625
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Find related papers by JEL classification: G1 - Financial Economics - - General Financial Markets G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions G12 - Financial Economics - - General Financial Markets - - - Asset Pricing G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies G23 - Financial Economics - - Financial Institutions and Services - - - Pension Funds; Other Private Financial Institutions
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Marcin Kacperczyk & Clemens Sialm & Lu Zheng, 2008.
"Unobserved Actions of Mutual Funds,"
Review of Financial Studies,
Oxford University Press for Society for Financial Studies, vol. 21(6), pages 2379-2416, November.
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