Portfolio Pumping and Managerial Structure
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Abstract Using U.S. equity mutual fund data, we show that portfolio pumping—an illegal trading activity that artificially inflates year- and quarter-end portfolio returns—is more pronounced among single-managed funds compared with team-managed ones. The return inflation by team-managed funds is 45% lower than by single-managed funds at year-ends. Also, portfolio pumping decreases as team size increases. These results are driven by peer effects among teams and, sometimes, amplified by less convex flow-performance relation in team-managed funds. Our findings are robust to differences in fund governance, manager career concerns, local networks, fund family policies, and changes in the SEC’s enforcement policies.
2007 ◽
Vol 2
(1)
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pp. 1-24
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2011 ◽
Vol 17
(1)
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pp. 45-61
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2009 ◽
Vol 9
(1)
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