Arbitrage Opportunities in Arbitrage-Free Models of Bond Pricing

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Abstract
Mathematical models of bond pricing are used by both academics and Wall Street practitioners, with practitioners introducing time-dependent parameters to fit 'arbitrage-free' models to selected asset prices. The authors show, in a simple one-factor setting, that the ability of such models to reproduce a subset of security prices need not extend to state-contingent claims more generally. They argue that the additional parameters of arbitrage-free models should be complemented by close attention to fundamentals, which might include mean reversion, multiple factors, stochastic volatility, and/or nonnormal interest-rate distributions. (This abstract was borrowed from another version of this item.)

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