An Adaptive Method for Valuing an Option on Assets with Uncertainty in Volatility

Details An Adaptive Method for Valuing an Option on Assets with Uncertainty in Volatility An Adaptive Method for Valuing an Option on Assets with Uncertainty in Volatility

2004-10-12

arxiv.org/abs/cond-mat/0410294v4

Physics

Condensed Matter

Other Condensed Matter

15 pages, 3 fiqures

Scientific paper

We present an adaptive approach for valuing the European call option on assets with stochastic volatility. The essential feature of the method is a reduction of uncertainty in latent volatility due to a Bayesian learning procedure. Starting from a discrete-time stochastic volatility model, we derive a recurrence equation for the variance of the innovation term in latent volatility equation. This equation describes a reduction of uncertainty in volatility which is crucial for option pricing. To implement the idea of adaptive control, we use the risk-minimization procedure involving random volatility with uncertainty. By using stochastic dynamic programming and a Bayesian approach, we derive a recurrence equation for the risk inherent in writing the option. This equation allows us to find the fair price of the European call option. We illustrate numerically that the adaptive procedure leads to a decrease in option price.

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