Miami International Holdings, Inc. (MIAX) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for MIAX. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 198 institutions reported holding MIAX, with 71.6 million shares worth $2.7 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Horizon Kinetics Asset Management | 7,842,173 | $291M | INCREASED |
| Vanguard | 7,297,857 | $271M | INCREASED |
| T. Rowe Price | 5,877,434 | $218M | INCREASED |
| BlackRock | 5,071,754 | $188M | INCREASED |
| Susquehanna International Group | 3,355,043 | $125M | INCREASED |
Full institutional holdings, insider history, and congressional trades for Miami International Holdings, Inc. on SentiSense.