VIX options traded on the CBOE have become popular volatility derivatives. As S&P500 vanilla options and VIX both depend on S&P500 volatility dynamics, it is important to understand the link between these products. In this paper, we bound VIX options from vanilla options and VIX futures. This...

In this paper, we focus on short-time asymptotics for American options in the case of local and stochastic volatility models. As a by-product, we obtain an efficient algorithm for calibrating Dupire's local volatility to American options, starting from an arbitrage-free parametrization of a...