Bid-Ask Spread Variance

Calculation

Bid-Ask Spread Variance quantifies the dispersion of price differences between the highest bid and lowest ask prices over a defined period, reflecting market liquidity and order flow dynamics. In cryptocurrency and derivatives markets, this variance is particularly sensitive to fragmented order books and rapid price movements, providing insight into the cost of immediacy. A higher variance typically indicates increased uncertainty and potential for price impact from larger trades, influencing optimal execution strategies. Its computation often involves statistical measures like standard deviation applied to a time series of spread values, offering a dynamic assessment of market conditions.