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Miami International Holdings, also known as financial markets exchange MIAX, raised over $345 million in its IPO Wall Street debut.
Shares, which priced at $23, rose over 33% on the first day of trading and are listed on the New York Stock Exchange under the ticker MIAX.
| Ticker | Security | Last | Change | Change % |
|---|---|---|---|---|
| MIAX | MIAMI INTERNATIONAL HOLDINGS INC COM USD0.001 | 31.15 | 0.00 | 0.00% |
CEO Thomas Gallagher led his team in ringing the opening bell on the NYSE floor Thursday.
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“We are a technology-driven leader in building and operating regulated financial marketplaces across multiple asset classes and geographies. Our MIAX Exchange marketplaces are enabled by our in-house-built, proprietary technology,” according to a filing with the Securities and Exchange Commission.
“We believe the speed and performance of our proprietary technology coupled with our fully integrated, award-winning customer service, sets us apart from our competitors.”
Those asset classes include U.S. options, equities, futures and listings, according to the company. Proceeds from the IPO will go toward general corporate purposes.
Thomas Gallagher, chairman and CEO of Miami International Holdings (MIAX), center, during the company’s initial public offering at the New York Stock Exchange in New York on Thursday, Aug. 14, 2025. (Michael Nagle/Bloomberg via Getty Images / Getty Images)
Total options volume across all classes rose 42.9% year-over-year to a record 1.1 billion contracts. Total market share sits at 16.2%.
A NYSE trader as Miami International Holdings (MIAX) goes public in the company’s initial public offering on the floor of the New York Stock Exchange in New York Thursday, Aug. 14, 2025. (Michael Nagle/Bloomberg via Getty Images / Getty Images)
While the exchange doesn’t list exchange-traded funds, it trades options on ETFs, including iShares Bitcoin Trust ETF, iShares Ethereum Trust, Grayscale Ethereum Mini Trust and Bitwise Ethereum ETF, to name a few.
| Ticker | Security | Last | Change | Change % |
|---|---|---|---|---|
| IBIT | ISHARES BITCOIN TRUST – USD ACC | 67.03 | -2.81 | -4.02% |
| ETHE | GRAYSCALE ETHEREUM MINI TRUST [ETH] | 37.48 | -1.67 | -4.27% |
| ETHA | ISHARES ETHEREUM TRUST NPV | 34.37 | -1.53 | -4.26% |
| ETWH | NO DATA AVAILABLE | – | – | – |
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The downtown Miami skyline from the Miami South Channel April 5, 2021, in Miami, Fla. (AaronP/Bauer-Griffin/GC Images / Getty Images)
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The exchange will open a state-of-the-art trading floor in Miami in September, a MIAX spokesperson told FOX Business.
