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Fund Tradeoffs

P�stor, Lubo�, Robert F. Stambaugh and Lucian Taylor

No 12513, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: We derive equilibrium relations among active mutual funds' key characteristics: fund size, expense ratio, turnover, and portfolio liquidity. As our model predicts, funds with smaller size, higher expense ratios, and lower turnover hold less liquid portfolios. A portfolio's liquidity, a concept introduced here, depends not only on the liquidity of the portfolio's holdings but also on the portfolio's diversification. We derive simple, theoretically motivated measures of portfolio liquidity and diversification. Both measures have trended up over time. We also find larger funds are cheaper, funds trading less are larger and cheaper, and excessively large funds underperform, as our model predicts.

Keywords: Diversification; Mutual funds; portfolio liquidity (search for similar items in EconPapers)
JEL-codes: G11 G23 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-rmg
Date: 2017-12
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