Stochastic Dominance
Stochastic Dominance is a partial ordering of probability distributions that allows for the comparison of risky prospects without needing to specify a particular utility function. It provides a way to determine which investment is superior based on the general preferences of risk-averse individuals.
In options trading, it is used to evaluate whether one derivative strategy is strictly better than another across all possible market outcomes. There are different orders of stochastic dominance, with first-order dominance being the most stringent and requiring that the cumulative distribution function of one prospect is always lower than the other.
Higher orders of dominance incorporate more specific assumptions about risk aversion. This framework is particularly useful in cryptocurrency, where the underlying distributions of returns are often non-normal and exhibit fat tails.
It allows for robust decision-making when the exact utility function of an investor is unknown. By using stochastic dominance, researchers can identify strategies that are objectively better for a broad class of investors.
It is a powerful tool for filtering out inefficient strategies in complex derivative markets.