When designing multi-asset stochastic volatility (SV) or local-stochastic volatility (LSV) models, one of the main issues involves the construction of the global correlation matrix. Typically correlation matrices for each assets' degrees of freedom are set and the challenge is to build a global...

We address the issue of pricing multi-asset options in the context of asynchronous markets. Using the criterion that the carry P&L vanish we derive the expression of the correlation estimator for the asynchronous case. We study its historical behaviour for the case of the Stoxx50, S&P500, and...