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%MiamiInternationalHoldings Inc. (NYSE: $MIAX ), a leading operator of electronic exchanges for options, equities, and futures, made a stellar entrance into public markets with its initial public offering (IPO). The Princeton, New Jersey-based company priced 15 million shares at $23 each, surpassing the expected range of $19 to $21 per share and raising $345 million. This upsized offering, backed by private equity firm Warburg Pincus, underscores strong investor demand for innovative trading platforms amid evolving financial markets.

Founded in 2008, Miami International Holdings launched its flagship MIAX Options exchange in 2012, pioneering high-performance technology for U.S. derivatives trading. Over the past decade, the company has expanded into a global exchange group, operating four U.S. options venues—MIAX Options, MIAX Pearl, MIAX Emerald, and the newly launched MIAX Sapphire—with distinct pricing and allocation models to cater to diverse trader needs. It also handles equities via MIAX Pearl Equities, futures through MIAX Futures (introduced in 2025), and international listings on the Bermuda Stock Exchange (BSX) and The International Stock Exchange (TISE) in Guernsey.

On its NYSE debut under the ticker MIAX on August 14, 2025, shares opened at $31, a 35% jump from the IPO price, and peaked at $33 during early trading. This performance values the firm at approximately $2.3 billion, making it one of the largest U.S. exchange IPOs this year. The surge reflects optimism in the sector, driven by rising trading volumes.

Proceeds from the IPO will fuel further growth, including enhancements to MIAX Sapphire's planned physical trading floor in Miami in 2025, potential acquisitions, and expansion into digital assets and international markets. As markets grapple with volatility, Miami International's proprietary low-latency platforms position it as a key player in modern finance, blending innovation with regulatory compliance.