  In a stochastic volatility framework, we find a general pricing equation for
the class of payoffs depending on the terminal value of a market asset and its
final quadratic variation. This allows a pricing tool for European-style claims
paying off at maturity a joint function of the underlying and its realised
volatility/variance. We study the solution under different stochastic
volatility models, give a formula for the computation of the Delta and Gamma of
these claims, and introduce some new interesting payoffs that can be priced
through this equation. Numerical results are given and compared to those from
plain vanilla derivatives.
