Miami International Holdings Announces Sale of MIAXdx to Robinhood Markets in Partnership with Susquehanna International Group

Miami International Holdings to Retain 10% Stake in the Exchange and Clearinghouse

PRINCETON, N.J. and MIAMI, Nov. 25, 2025 /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 entered into an agreement to sell 90% of the issued and outstanding equity in MIAX Derivatives Exchange (MIAXdx™), a wholly owned subsidiary of MIAX, to Robinhood Markets, Inc. (Robinhood) (NASDAQ: HOOD) in partnership with Susquehanna International Group. MIAX will retain the remaining 10% of the issued and outstanding equity of MIAXdx.

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