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Demand-Based Option Pricing

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  • Garleanu, Nicolae Bogdan
  • Pedersen, Lasse Heje
  • Poteshman, Allen M

Abstract

We model the demand-pressure effect on prices when options cannot be perfectly hedged. The model shows that demand pressure in one option contract increases its price by an amount proportional to the variance of the unhedgeable part of the option. Similarly, the demand pressure increases the price of any other option by an amount proportional to the covariance of their unhedgeable parts. Empirically, we identify aggregate positions of dealers and end users using a unique dataset, and show that demand-pressure effects contribute to well-known option-pricing puzzles. Indeed, time-series tests show that demand helps explain the overall expensiveness and skew patterns of both index options and single-stock options.

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Bibliographic Info

Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 5420.

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Date of creation: Dec 2005
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Handle: RePEc:cpr:ceprdp:5420

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Keywords: dealers; demand; hedging; implied volatility; intermediation; market makers; option; price pressure; risk; valuation;

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References

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  1. Jeffrey Wurgler & Ekaterina Zhuravskaya, 2000. "Does Arbitrage Flatten Demand Curves for Stocks?," Yale School of Management Working Papers ysm152, Yale School of Management, revised 01 Nov 2001.
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  6. John H. Cochrane & Jesús Saá-Requejo, 1998. "Beyond Arbitrage: "Good-Deal" Asset Price Bounds in Incomplete Markets," CRSP working papers 430, Center for Research in Security Prices, Graduate School of Business, University of Chicago.
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  16. Bates, David S., 2000. "Post-'87 crash fears in the S&P 500 futures option market," Journal of Econometrics, Elsevier, vol. 94(1-2), pages 181-238.
  17. Figlewski, Stephen, 1989. " Options Arbitrage in Imperfect Markets," Journal of Finance, American Finance Association, vol. 44(5), pages 1289-1311, December.
  18. Allen M. Poteshman, 2001. "Underreaction, Overreaction, and Increasing Misreaction to Information in the Options Market," Journal of Finance, American Finance Association, vol. 56(3), pages 851-876, 06.
  19. Greenwood, Robin, 2005. "Short- and long-term demand curves for stocks: theory and evidence on the dynamics of arbitrage," Journal of Financial Economics, Elsevier, vol. 75(3), pages 607-649, March.
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