Miami International Holdings, Inc. (MIAX)

Miami International Holdings, Inc. (MIAX) is a technology-driven operator of regulated financial markets, specializing in building and operating marketplaces across various asset classes and geographies. Headquartered in Princeton, New Jersey, with additional U.S. offices in Miami, Chicago, and Minneapolis, and international operations in Bermuda and Guernsey, MIAX focuses on providing high-performance trading platforms.

The company's offerings include a suite of U.S. options exchanges (MIAX Options, MIAX Pearl, MIAX Emerald, and MIAX Sapphire), a U.S. equities exchange (MIAX Pearl Equities), and U.S. futures and options on futures through MIAX Futures (formerly MGEX). MIAX also extends its reach internationally through subsidiaries like the Bermuda Stock Exchange (BSX) and The International Stock Exchange (TISE), and provides clearing services via MIAX Futures Clearing. A key differentiator for MIAX is its proprietary technology, engineered for throughput, low latency, reliability, and wire-order determinism.

Led by Chairman and CEO Thomas P. Gallagher, Miami International Holdings, Inc. became publicly traded on the New York Stock Exchange (NYSE) under the ticker symbol "MIAX" on August 14, 2025. The company has expanded its portfolio through strategic acquisitions, including LedgerX (now MIAXdx), a CFTC-regulated exchange for digital currency derivatives, and The International Stock Exchange (TISE). MIAX holds a significant position in the U.S. options market, reporting a 16% market share in the first half of 2025. In April 2026, MIAX launched a nationwide advertising campaign titled "Excellence in Every Exchange," reinforcing its market presence.