Miami International Holdings Reports Trading Results for October 2025

Core Insights - Miami International Holdings, Inc. (MIAX) reported significant trading results for October 2025, highlighting a strong performance across its exchange subsidiaries [1][5]. Trading Volume and Market Share - The MIAX Exchange Group achieved a monthly average daily volume (ADV) record of 13.1 million contracts in October 2025, representing a 92.4% increase compared to October 2024 [5]. - The year-to-date (YTD) ADV reached a record of 9.4 million contracts, a 46.4% increase from the same period in 2024 [5]. - MIAX Futures recorded a YTD ADV of 13,828 contracts through October 2025, marking a 10.1% increase from the same period in 2024 [5]. Market Share Records - The MIAX Exchange Group set a monthly market share record of 19.4% in October 2025 [5]. - A daily market share record of 20.9% was achieved on October 14, 2025 [5]. - A daily volume record of 19.7 million contracts was reached on October 10, 2025 [5]. Comparative Performance - In October 2025, the U.S. Equity Options ADV was 67,193 contracts, a 51.6% increase from October 2024 [4]. - The MIAX Exchange Group's options market share was 19.4% in October 2025, compared to 15.3% in October 2024 [4]. - The industry average daily volume (ADV) for U.S. equities was 20,996 million, reflecting an 80.0% increase from October 2024 [4].