An options-based model of equilibrium credit rationing

Mason, R.A. (1998) An options-based model of equilibrium credit rationing. Journal of Corporate Finance, 4, (1), 71-85. (doi:10.1016/S0929-1199(97)00010-2).


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This paper applies options theory to the model of equilibrium credit rationing developed by [Stiglitz, J.E., Weiss, A., 1981. Credit rationing in markets with imperfect information, American Economic Review, 71, 727–752.] by noticing that, given a standard debt contract and limited liability, the payoffs to the lender and the borrower when a loan is made involve a put and call option respectively. Information asymmetry is modelled using stochastic volatility option pricing methods. There are three advantages to the options approach. First, the well-known comparative statics of option pricing provide an alternative and immediate proof for many of Stiglitz and Weiss' results. Secondly, the framework accommodates several theoretical extensions to the basic results. Finally, the approach allows an assessment of the empirical significance of equilibrium credit rationing, since the model is easily parameterised. Simulations of the model suggest that rationing is unlikely to be significant at the collateral levels observed in the U.S and U.K. small commercial loan market.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/S0929-1199(97)00010-2
ISSNs: 0929-1199 (print)
Related URLs:
Keywords: equilibrium credit rationing, option pricing, stochastic volatility
Subjects: H Social Sciences > HG Finance
H Social Sciences > HB Economic Theory
H Social Sciences > HA Statistics
Divisions : University Structure - Pre August 2011 > School of Social Sciences > Economics
ePrint ID: 33006
Accepted Date and Publication Date:
Date Deposited: 21 Jun 2007
Last Modified: 31 Mar 2016 11:59

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