Price Improvement

The Cboe U.S. Equities Exchanges make the following price improvement information publicly available to demonstrate the impact of Cboe's matching engine technology and significant undisplayed liquidity, including true midpoint orders, on the economics of trading.

Each row of data on the files reflects, for a given symbol, the total price improvement, the number of shares, and the average price improvement per share.

File Name	Date
price-improvement-20260520.csv	May 20, 2026
price-improvement-20260519.csv	May 19, 2026
price-improvement-20260518.csv	May 18, 2026
price-improvement-20260515.csv	May 15, 2026
price-improvement-20260514.csv	May 14, 2026
price-improvement-20260513.csv	May 13, 2026
price-improvement-20260512.csv	May 12, 2026
price-improvement-20260511.csv	May 11, 2026
price-improvement-20260508.csv	May 08, 2026
price-improvement-20260507.csv	May 07, 2026
price-improvement-20260506.csv	May 06, 2026
price-improvement-20260505.csv	May 05, 2026
price-improvement-20260504.csv	May 04, 2026
price-improvement-20260501.csv	May 01, 2026