Avoiding Idiosyncratic Volatility: Flow Sensitivity to Individual Stock Returns

Marco Di Maggio, Francesco Franzoni, Shimon Kogan and Ran Xing

No 31360, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: Despite positive and significant earnings announcement premia, we find that institutional investors reduce their exposure to stocks before earnings announcements. A novel result on the sensitivity of flows to individual stock returns provides a potential explanation. We show that extreme announcement returns for an individual holding lead to substantial outflows, controlling for overall performance, and they increase the probability of managers leaving the fund. Reducing the exposure to these stocks before the announcement mitigates the outflows. We build a model to describe and quantify this tradeoff. Overall, the paper identifies a new dimension of limits to arbitrage for institutions.

JEL-codes: G12 G23 (search for similar items in EconPapers)
Date: 2023-06
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