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A Tractable Framework for Option Pricing with Dynamic Market Maker Inventory and Wealth

Published online by Cambridge University Press:  19 July 2019

Mathieu Fournier*
Affiliation:
Fournier, mathieu.fournier@hec.ca, HEC Montréal
Kris Jacobs
Affiliation:
Jacobs, kjacobs@bauer.uh.edu, University of Houston
*
Fournier (corresponding author), mathieu.fournier@hec.ca
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Abstract

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We develop a tractable dynamic model of an index option market maker with limited capital. We solve for the variance risk premium and option prices as a function of the asset dynamics and market maker option holdings and wealth. The market maker absorbs end users’ positive demand and requires a more negative variance risk premium when she incurs losses. We estimate the model using returns, options, and inventory and find that it performs well, especially during the financial crisis. The restrictions imposed by nested existing reduced-form stochastic-volatility models are strongly rejected in favor of the model with a market maker.

Information

Type
Research Article
Copyright
Copyright © Michael G. Foster School of Business, University of Washington 2019
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Fournier and Jacobs supplementary material

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