Miami International Holdings, Inc.
MIAX institutional ownership changes in Q2 2026: 81 institutions opened or added positions, 49 trimmed or exited. MIAX (Miami International Holdings, Inc.) is held by 115 institutional investors as of Q2 2026. Top institutional shareholders: Horizon Kinetics Asset Management LLC ($291.4M), BlackRock, Inc. ($188.5M), Vanguard Portfolio Management LLC ($140.7M). Institutions were buying, on balance.
Who's Trading
Latest move
Source dates: Price Nov 6, 2026 · Insiders Nov 5, 2026 · Activists Oct 27, 2026 · Congress Apr 7, 2026
Top Holders
| Action | ||||||
|---|---|---|---|---|---|---|
Increased | 7.8M(+127.2%) | $291.4M | 3.3% | -12.00% | 91 | |
Increased | 5.1M(+127.2%) | $188.5M | 0.0% | -13.73% | 49 | |
Increased | 3.8M(+175.4%) | $140.7M | 0.0% | -10.42% | 49 | |
Increased | 3.4M(+1.8%) | $124.7M | 0.0% | -15.77% | 31 | |
Increased | 3.2M(+123.7%) | $117.6M | 0.0% | -10.77% | 49 | |
Increased | 2M(+27.5%) | $75.1M | 0.0% | -17.54% | 37 | |
Increased | 1.8M(+165.8%) | $65.8M | 0.2% | -13.17% | 57 | |
New | 1.7M | $62.5M | 0.1% | -8.88% | 41 | |
Increased | 1.6M(+29.9%) | $59M | 0.0% | -19.68% | 37 | |
Increased | 1.4M(+101.2%) | $53.2M | 0.0% | -15.50% | 47 | |
Increased | 1.4M(+15.3%) | $52.7M | 0.0% | -14.19% | 34 | |
Increased | 1.4M(+79.0%) | $51.9M | 0.0% | -14.66% | 45 | |
Decreased | 1.1M(-8.3%) | $42.5M | 0.1% | -16.79% | 0 | |
Increased | 1M(+333.1%) | $38.6M | 0.1% | -10.90% | 47 | |
Decreased | 950,593(-17.1%) | $35.3M | 0.0% | -13.57% | 0 | |
Decreased | 857,682(-22.9%) | $33.5M | 0.1% | -19.02% | 0 | |
Decreased | 888,109(-0.6%) | $33M | 0.0% | -14.38% | 0 | |
Decreased | 856,980(-4.9%) | $31.8M | 0.0% | -15.10% | 0 | |
Decreased | 848,750(-41.4%) | $31.5M | 0.1% | -15.71% | 0 | |
Increased | 844,464(+430.5%) | $31.4M | 0.0% | -10.18% | 47 |
Showing 1-20 of 135
MIAXMiami International Holdings, Inc.Continue exploring
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CCitigroup, Inc.Questions investors ask about MIAX
Who owns MIAX?
115 institutional investors held MIAX on June 30, 2026, led by Horizon Kinetics Asset Management LLC ($291.4M), BlackRock, Inc. ($188.5M) and Vanguard Portfolio Management LLC ($140.7M).
How many hedge funds hold MIAX?
115 institutional investors reported MIAX in their 13F filings for the quarter ended June 30, 2026, $2.1B in all. 6 of them are rated Elite.
Are institutions buying or selling MIAX?
Buying, on balance. In Q2 2026, 81 institutions opened or added to positions in MIAX and 49 institutions trimmed or exited.
Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer