Prefer a chat interface with context about you and your work?
On the structure of general mean-variance hedging strategies
We provide a new characterization of mean-variance hedging strategies in a general semimartingale market. The key point is the introduction of a new probability measure P⋆ which turns the dynamic asset allocation problem into a myopic one. The minimal martingale measure relative to P⋆ coincides with the variance-optimal martingale measure …