Spread Variance

Variance

The spread variance, within cryptocurrency derivatives and options trading, quantifies the volatility of the difference between two prices—typically the bid-ask spread or the prices of related instruments. It represents a second-order moment, reflecting not just the average deviation but the dispersion of these spread differences over time. This metric is crucial for assessing liquidity risk and refining trading strategies, particularly in markets characterized by rapid price fluctuations and varying order book depth. Understanding spread variance allows for more precise estimation of transaction costs and the potential impact of market microstructure effects on profitability.