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Short-term investment and equilibrium multiplicity

  • Giovanni Cespa

I study the effects of the heterogeneity of traders' horizon in the context of a 2-period NREE model where all traders are risk averse. Owing to inventory effects, myopic trading behavior generates multiplicity of equilibria. In particular, two distinct patterns arise. Along the first equilibrium, short term traders anticipate higher second period price reaction to information arrival and, owing to risk aversion, scale back their trading intensity. This, in turn, reduces both risk sharing and information impounding into prices enforcing a high returns' volatility-low price informativeness equilibrium. In the second one, the opposite happens and a low volatility-high price informativeness equilibrium arises.

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Paper provided by Department of Economics and Business, Universitat Pompeu Fabra in its series Economics Working Papers with number 520.

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Date of creation: Jun 2000
Date of revision: Jun 2002
Handle: RePEc:upf:upfgen:520
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  19. Russ Wermers, 1999. "Mutual Fund Herding and the Impact on Stock Prices," Journal of Finance, American Finance Association, vol. 54(2), pages 581-622, 04.
  20. Charles Kahn & Andrew Winton, 1998. "Ownership Structure, Speculation, and Shareholder Intervention," Journal of Finance, American Finance Association, vol. 53(1), pages 99-129, 02.
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