Pricing the European call option in the model with stochastic volatility driven by Ornstein–Uhlenbeck process. Exact formulas        
        
    
        Volume 2, Issue 3 (2015): PRESTO-2015, pp. 233–249
            
    
                    Pub. online: 25 September 2015
                    
        Type: Research Article
            
                
            
Open Access
        
            
    
                Received
29 July 2015
                                    29 July 2015
                Revised
13 September 2015
                                    13 September 2015
                Accepted
14 September 2015
                                    14 September 2015
                Published
25 September 2015
                    25 September 2015
Abstract
We consider the Black–Scholes model of financial market modified to capture the stochastic nature of volatility observed at real financial markets. For volatility driven by the Ornstein–Uhlenbeck process, we establish the existence of equivalent martingale measure in the market model. The option is priced with respect to the minimal martingale measure for the case of uncorrelated processes of volatility and asset price, and an analytic expression for the price of European call option is derived. We use the inverse Fourier transform of a characteristic function and the Gaussian property of the Ornstein–Uhlenbeck process.
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