Liquidity Weighted Skew

Calculation

Liquidity Weighted Skew represents a refinement of traditional skew measurement in options markets, specifically accounting for the distribution of open interest across strike prices. It quantifies the difference in implied volatility between out-of-the-money puts and calls, weighted by the liquidity—typically volume—at each strike. This metric provides a more nuanced view of market risk sentiment than unweighted skew, as it emphasizes areas where traders are actively positioning. Consequently, a higher liquidity weighted skew often signals increased demand for downside protection, reflecting a greater perceived risk of market declines.