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Miami International Holdings, also known as Financial Markets Exchange Miax, raised more than $ 345 million in his IPO Wall Street debut.
Shares, which were priced at $ 23, rose more than 33% on the first trading day and are mentioned on the New York Stock Exchange under the Ticker Miax.
| Ticker | Security | Last | Change | Change % |
|---|---|---|---|---|
| Miax | Miami International Holdings Inc USD0.001 | 31.15 | 0.00 |
0.00% |
CEO Thomas Gallagher led his team through the opening bell on the NYSE floor on Thursday.
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“We are a technology-driven leader in building and operating regulated financial market places on multiple asset classes and geographies. Our Miax Exchange marketplaces are made possible by our internal, own technology,” said a submission to the Securities and Exchange Commission.
“We believe that the speed and performance of our own technology in combination with our fully integrated, award -winning customer service distinguish us from our competitors.”
According to the company, those activa classes include American options, shares, futures and entries. The proceeds from the IPO will go to general business purposes.
Thomas Gallagher, chairman and CEO of Miami International Holdings (MiaX), Center, during the first public offer of the company in the New York Stock Exchange in New York on Thursday, August 14, 2025. (Michael Nagle / Bloomberg via Getty Images / Getty images)
The total option volume in all classes rose by 42.9% on an annual basis to a record of 1.1 billion contracts. The total market share is 16.2%.

A NYSE trader such as Miami International Holdings (MiaX) is public in the first public offer of the company on the floor of the New York Stock Exchange in New York Thursday, August 14, 2025. (Michael Nagle / Bloomberg via Getty Images / Getty images)
Although the exchange does not state listed funds, it exchange options on ETFs, including Ishares Bitcoin Trust ETF, Ishares Ethereum Trust, Grayscale Ethereum Mini Trust and Bitwise Ethereum ETF, to name just 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% |
| EDWH | No data available | – | – |
– |
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The skyline of the city center of Miami of the Miami South Channel 5 April 2021 in Miami, Fla. (Aaronp/Bauer-Griffin/GC images/Getty images)
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