Miami International Holdings, Inc. priced its initial public offering at $23.00 a share, offering 15,000,000 shares of common stock, to list on the New York Stock Exchange under the symbol MIAX. It filed a Form S-1 registration statement for an initial public offering on July 18, 2025. As of November 6, 2026, its final prospectus is on file (Form 424B4, December 15, 2025).
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Key facts
Miami International Holdings, Inc. filed a Form S-1 registration statement for an initial public offering on 2025-07-18. It has amended it 1 time. It filed its final prospectus on 2025-12-15, at a public offering price of $23.00 per share. Each fact below is quoted from the filing named with it.
Also on the record for Miami International Holdings, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 27, 2026 | Stake report, Schedule 13G/A, by BlackRock, Inc. | 6.2% of the class | 5%+ stakes | Source |
| August 14, 2026 | Stake report, Schedule 13G, by T. Rowe Price Investment Management, Inc. | 5.3% of the class | 5%+ stakes | Source |
| July 29, 2026 | Stake report, Schedule 13G, by BlackRock, Inc. | 5.1% of the class | 5%+ stakes | Source |
| May 21, 2026 | Stake report, Schedule 13D/A, by HORIZON KINETICS ASSET MANAGEMENT LLC | 7.8% of the class | 5%+ stakes | Source |
| April 28, 2026 | Stake report, Schedule 13D/A, by HORIZON KINETICS ASSET MANAGEMENT LLC | 12.2% of the class | 5%+ stakes | Source |
| April 27, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| April 14, 2026 | Stake report, Schedule 13D/A, by HORIZON KINETICS ASSET MANAGEMENT LLC | 12.1% of the class | 5%+ stakes | Source |
| November 26, 2025 | Stake report, Schedule 13D/A, by HORIZON KINETICS ASSET MANAGEMENT LLC | 11.7% of the class | 5%+ stakes | Source |
| August 28, 2025 | Stake report, Schedule 13D/A, by Thomas P. Gallagher | 4.9% of the class | 5%+ stakes | Source |
| August 21, 2025 | Stake report, Schedule 13D, by HORIZON KINETICS ASSET MANAGEMENT LLC | 10.7% of the class | 5%+ stakes | Source |
| August 21, 2025 | Stake report, Schedule 13D, by Thomas P. Gallagher | 5.1% of the class | 5%+ stakes | Source |
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More on Miami International Holdings, Inc. and the records around it.
Miami International Holdings, Inc. elsewhere on the record
- 5%+ stake filings Oct 2026
- Who owns it
Companies that share a holder
- HORIZON KINETICS ASSET MANAGEMENT LLC also filed stake reports on 13 other companies: LandBridge Co LLC (Nov 2026), EagleRock Land, LLC (Jul 2026), WhiteHawk Minerals Corp. (Jul 2026)
- T. Rowe Price Investment Management, Inc. also filed stake reports on 167 other companies: CABALETTA BIO INC (Nov 2026), MADISON SQUARE GARDEN SPORTS CORP (Nov 2026), MSG RANGERS CORP (Nov 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
Also filing to list on the New York Stock Exchange
IPO filings on the New York Stock Exchange in Q4 2025, newest first.
- American Integrity Insurance Group, Inc. (Nov 2025)
- Grupo Aeromexico, S.A.B. de C.V. (Oct 2025)
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What the filings say
Listing
Our shares of common stock are listed on the New York Stock Exchange (“NYSE”) under the symbol “MIAX”.From the 424B4 filed 2025-12-15
Shares offered
This is an initial public offering of shares of common stock of Miami International Holdings, Inc. We are offering 15,000,000 shares of our common stock.From the 424B4 filed 2025-08-14
Offering price
On August 15, 2025, we completed our initial public offering (the “IPO”) of 17,250,000 shares of our common stock at a public offering price of $23.00 per share, which included 2,250,000 shares issued pursuant to the underwriters’ option to purchase additional shares of our common stock.From the 424B4 filed 2025-12-15
Use of proceeds
We intend to use the net proceeds from this offering to repay the 2029 Senior Secured Term Loan in full and related premium and for working capital and general corporate purposes, including to satisfy tax withholding and remittance obligations.From the 424B4 filed 2025-08-14
Revenue
For the nine months ended September 30, 2025, and the years ended December 31, 2024, December 31, 2023, and December 31, 2022, respectively, our revenues less cost of revenues were $306.0 million, $275.6 million, $232.5 million and $195.6 million, our adjusted revenues less cost of revenues were $306.0 million, $277.6 million, $237.1 million and $198.6 million, our net income (loss) was $(100.0) million, $102.0 million, $(21.4) million and $57.3 million, our adjusted EBITDA was $136.9 million, $82.1 million, $67.2 million and $57.3 million, with an adjusted EBITDA margin of 44.7%, 29.6%, 28.4% and 28.8%.From the S-1 filed 2025-12-09
Net loss or income
For the nine months ended September 30, 2025, and the years ended December 31, 2024, December 31, 2023, and December 31, 2022, respectively, our revenues less cost of revenues were $306.0 million, $275.6 million, $232.5 million and $195.6 million, our adjusted revenues less cost of revenues were $306.0 million, $277.6 million, $237.1 million and $198.6 million, our net income (loss) was $(100.0) million, $102.0 million, $(21.4) million and $57.3 million, our adjusted EBITDA was $136.9 million, $82.1 million, $67.2 million and $57.3 million, with an adjusted EBITDA margin of 44.7%, 29.6%, 28.4% and 28.8%.From the S-1 filed 2025-12-09
Timeline
| Filed | What it is | Filing |
|---|---|---|
| 2025-07-18 | Registration statement filed | S-1 |
| 2025-08-04 | Registration statement amended | S-1/A |
| 2025-08-14 | Final prospectus filed: the offering is priced | 424B4 |
| 2025-12-09 | Registration statement filed | S-1 |
| 2025-12-15 | Final prospectus filed: the offering is priced | 424B4 |
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Where this comes from
A company that wants to sell shares to the public in the United States files a registration statement with the SEC: Form S-1 for a US company, Form F-1 for a foreign one. It amends that statement as the figures and terms are filled in, usually adding the expected price range shortly before the offering. Once the offering is priced it files its final prospectus under Rule 424(b)(4). A company that decides not to go ahead can ask for the registration statement to be withdrawn on Form RW.
Every row on this page is one of those filings, linked to the filing itself. The facts are the company's own sentences, quoted from the filing named beside each one and never reworded; where no filing states a fact in a sentence that can be read exactly, this page leaves it out. A filing is the company's statement of its plans and its figures, not a verification of them, and nothing here is investment advice.