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Margin Requirements and Equilibrium Asset Prices

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Author Info
Daniele Coen-Pirani

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Abstract

This paper studies the effect of margin requirements on asset prices, trading volume and investors' welfare in a general equilibrium asset pricing model where investors differ in their degree of risk aversion. In the stationary equilibrium of the model binding margin requirements decrease the riskless rate and increase its volatility, as well as stock trading volume. Contrary to previous partial equilibrium results, stock prices are not affected by margin requirements. Small changes in margin requirements produce large effects on the long-run distribution of wealth among investors. From a welfare perspective margin requirements might benefit the constrained less risk averse investors, while they always make more risk averse investors worse-off.

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Paper provided by Carnegie Mellon University, Tepper School of Business in its series GSIA Working Papers with number 2001-E5.

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Date of creation: Dec 2000
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Handle: RePEc:cmu:gsiawp:274394073

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Postal: Tepper School of Business, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213-3890
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  1. Enrique G. Mendoza & Katherine A. Smith, 2002. "Margin Calls, Trading Costs, and Asset Prices in Emerging Markets: The Finanical Mechanics of the 'Sudden Stop' Phenomenon," NBER Working Papers 9286, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  2. Enrique G. Mendoza & Katherine A. Smith, 2004. "Quantitative Implication of A Debt-Deflation Theory of Sudden Stops and Asset Prices," NBER Working Papers 10940, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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