Probability Measure Change

Context

The concept of Probability Measure Change (PMC) arises when attempting to model shifts in underlying asset distributions, particularly relevant in cryptocurrency derivatives where volatility and structural breaks are commonplace. It fundamentally addresses how to adjust pricing models and risk management strategies when the statistical properties of the market environment evolve. This is especially critical for options pricing, variance swaps, and other derivatives sensitive to distributional assumptions, requiring a framework beyond static models. Understanding PMC is essential for robust hedging and accurate valuation in dynamic, often unpredictable, crypto markets.