Miami International Holdings Retains 10% Stake in the Exchange and Clearinghouse

PRINCETON, N.J. and MIAMI, Jan. 21, 2026 /PRNewswire/ — Miami International Holdings, Inc. (MIAX^®) (NYSE: MIAX), a technology-driven leader in building and operating regulated financial markets across multiple asset classes, today announced it has completed the sale of 90% of the issued and outstanding equity in MIAX Derivatives Exchange (MIAXdx™), a wholly owned subsidiary of MIAX, to a joint venture established by Robinhood Markets, Inc. (Robinhood) (NASDAQ: HOOD) in partnership with Susquehanna International Group. MIAX has retained 10% of the issued and outstanding equity of MIAXdx.

MIAXdx is a Designated Contract Market (DCM) and Derivatives Clearing Organization (DCO) with regulatory approval from the Commodity Futures Trading Commission (CFTC) to list and clear fully collateralized futures, options on futures, and swaps.

“Our sale of MIAXdx reaffirms our strategy of partnering with industry leaders to accelerate our growth strategies and we’re pleased to gain exposure to the growing prediction market through our retained equity stake in the exchange,” said Thomas P. Gallagher, Chairman and Chief Executive Officer of MIAX. “MIAX is laser focused on organic growth opportunities within our core exchanges and believe the sale of 90% of MIAXdx unlocks significant value for our shareholders. We look forward to seeing what’s ahead for MIAXdx and remain invested in its long-term success.”

“The purchase of MIAXdx accelerates our investment in the prediction markets and improves our position to deliver a better experience for customers in this growing asset class,” said JB Mackenzie, VP and GM of Futures and International at Robinhood. “We’re grateful to MIAX for their trust and retained investment in the venture, and we look forward to exploring future partnership opportunities with a technology driven leader in the exchange industry.”

About MIAX
Miami International Holdings, Inc. (NYSE: MIAX) is a technology-driven leader in building and operating regulated financial markets across multiple asset classes and geographies. MIAX operates eight exchanges across options, futures, equities and international markets including MIAX^® Options, MIAX Pearl^®, MIAX Emerald^®, MIAX Sapphire^®, MIAX Pearl Equities™, MIAX Futures™, The Bermuda Stock Exchange (BSX) and The International Stock Exchange (TISE). MIAX also owns Dorman Trading, a full-service Futures Commission Merchant. To learn more about MIAX, please visit www.miaxglobal.com.

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