Chen, Wenting; Zhu, Song-Ping - In: Journal of risk and financial management : JRFM 15 (2022) 5, pp. 1-19
The behavior of the optimal exercise price of American puts near expiry has been well studied under the Black-Scholes model as a result of a series of publications. However, the behavior of the optimal exercise price under a stochastic volatility model, such as the Heston model, has not been...