Who Owns MIAMI INTL HLDGS INC (MIAX)? -- Institutional Holders (2026-06-30)
245 institutions reported holding $2.73B of MIAMI INTL HLDGS INC (MIAX) in SEC 13F filings for 2026-06-30. Largest institutional holders: HORIZON KINETICS ASSET MANAGEMENT LLC ($291.4M), VANGUARD GROUP INC ($271.2M), BlackRock, Inc. ($188.5M), T. Rowe Price Investment Management, Inc. ($187.0M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($141.0M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | HORIZON KINETICS ASSET MANAGEMENT LLC | $291.4M | 7.8M | Added |
| 2 | VANGUARD GROUP INC | $271.2M | 7.3M | Added |
| 3 | BlackRock, Inc. | $188.5M | 5.1M | Added |
| 4 | T. Rowe Price Investment Management, Inc. | $187.0M | 5.0M | Added |
| 5 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $141.0M | 3.8M | Added |
| 6 | Invesco Ltd. | $75.1M | 2.0M | Added |
| 7 | J Digital 6 LLC | $67.2M | 1.8M | New |
| 8 | BLAIR WILLIAM & CO/IL | $65.8M | 1.8M | Added |
| 9 | Balyasny Asset Management L.P. | $62.5M | 1.7M | New |
| 10 | AMERICAN CENTURY COMPANIES INC | $59.0M | 1.6M | Added |
| 11 | STATE STREET CORP | $53.2M | 1.4M | Added |
| 12 | JPMORGAN CHASE & CO | $52.7M | 1.4M | Added |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | $51.9M | 1.4M | Added |
| 14 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $42.5M | 1.1M | Trimmed |
| 15 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $38.6M | 1.0M | Added |
| 16 | LORD, ABBETT & CO. LLC | $37.2M | 1.0M | Added |
| 17 | MORGAN STANLEY | $35.3M | 950,593 | Trimmed |
| 18 | Allspring Global Investments Holdings, LLC | $33.5M | 857,682 | Trimmed |
| 19 | TWO SIGMA INVESTMENTS, LP | $33.0M | 888,109 | Trimmed |
| 20 | BANK OF AMERICA CORP /DE/ | $31.8M | 856,980 | Trimmed |
| 21 | Alyeska Investment Group, L.P. | $31.5M | 848,750 | Trimmed |
| 22 | PRICE T ROWE ASSOCIATES INC /MD/ | $31.4M | 844,464 | Added |
| 23 | FRANKLIN RESOURCES INC | $29.2M | 784,799 | Added |
| 24 | Walleye Capital LLC | $27.1M | 728,034 | Added |
| 25 | WESTFIELD CAPITAL MANAGEMENT CO LP | $26.0M | 700,741 | New |
Source: SEC Form 13F filings · as of 2026-06-30