MIAX Exchange Group reports 26.3% increase in multi-list options ADV YTD. Miami International Holdings, Inc. (MIAX) reported July 2026 trading results for its U.S. exchange subsidiaries — MIAX®, MIAX Pearl®, MIAX Emerald®, and MIAX Sapphire®. The group reached a record YTD average daily volume of 10.9 million contracts, a 26.3% increase from the same period in 2025. Market share also reached a record of 16.9% through July 2026. Additional trading volume and market share information can be found on the MIAX website.