MIAMI INTERNATIONAL HOLDINGS, INC. - MIAX
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| Aug 14, 2026 | SCHEDULE 13G | T. Rowe Price Investment Management, Inc. | 5.3% | 5,032,970 | View |
| Jul 29, 2026 | SCHEDULE 13G | BlackRock, Inc. | 5.1% | 4,949,990 | View |
| May 21, 2026 | SCHEDULE 13D/A | — | 7.8% | 7,400,316 | View |
| Apr 28, 2026 | SCHEDULE 13D/A | — | 12.2% | 11,162,809 | View |
| Apr 14, 2026 | SCHEDULE 13D/A | — | 12.1% | 11,061,399 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.