Miami International HoldingsMIAX
13F holders, Q4 2025 (December 31)161holders +46
64new positions
23sold out
5famous investors
$44.39avg. 13F price*
At the end of Q4 2025, 161 institutions reported holding Miami International Holdings (MIAX) in their 13F filings, up 46 from Q3 2025. 64 opened new positions and 23 sold out. The largest holders were Susquehanna International Group, LLP ($145.8M), T. Rowe Price Investment Management, Inc. ($134.3M) and Vanguard Group Inc. ($85.6M). 5 famous investors held it, including George Soros (0.1% of Soros Fund Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Miami International Holdings
- CUSIP
- 59356Q108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 64 | $112.5M |
| Exits | 23 | $33.9M |
All 13F filers, Q3 2025 → Q4 2025: 13,908,053 shares bought and 2,459,839 shares sold, net +11,448,214 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 161 holders
| Susquehanna International Group, LLP | 0.20% | Add +0.0% | 3,284,952 | $145.8M |
| T. Rowe Price Investment Management, Inc. | 0.08% | Add +24.5% | 3,025,712 | $134.3M |
| Vanguard Group Inc. | 0.00% | Add +39.5% | 1,928,286 | $85.6M |
| Horizon Kinetics Asset Management LLC | 1.09% | Add +31.6% | 1,819,798 | $80.8M |
| BlackRock, Inc. | 0.00% | Add +147.8% | 1,753,507 | $77.8M |
| American Century Companies Inc. | 0.03% | Add +467.3% | 1,448,293 | $64.3M |
| Alyeska Investment Group, L.P. | 0.16% | Add +1.6% | 1,286,086 | $57.1M |
| Invesco Ltd. | 0.01% | Add +178.8% | 1,278,966 | $56.8M |
| North Reef Capital Management LP | 2.26% | Add +74.3% | 1,265,000 | $56.1M |
| Allspring Global Investments Holdings, LLC | 0.07% | Add +105.5% | 932,053 | $40.7M |
| Adage Capital Partners Gp, L.L.C. | 0.06% | Add +39.5% | 881,329 | $39.1M |
| JPMorgan Chase & Co. | 0.00% | Add +0.3% | 814,340 | $36.1M |
| Caldwell Investment Management Ltd. | 20.74% | Add +11.3% | 738,810 | $33.7M |
| Lord, Abbett & Co. LLC | 0.09% | Add +120.5% | 659,669 | $29.3M |
| Blair William & Co. | 0.08% | Add +80.0% | 654,845 | $29.1M |
| Jane Street Group, LLC | 0.03% | Add +30.3% | 638,050 | $28.3M |
| Citadel Advisors | 0.02% | Reduce -36.5% | 619,580 | $27.5M |
| Wellington Management Group LLP | 0.00% | Add +5.7% | 616,118 | $27.3M |
| Goldman Sachs Group Inc. | 0.00% | Add +200.6% | 580,665 | $25.8M |
| State Street Corp. | 0.00% | Add +921.1% | 576,385 | $25.6M |
| Ghisallo Capital Management LLC | 1.10% | Add +102.7% | 557,500 | $24.7M |
| Driehaus Capital Management LLC | 0.16% | Add +177.8% | 532,391 | $23.6M |
| Geode Capital Management, LLC | 0.00% | Add +221.7% | 512,797 | $22.8M |
| Ameriprise Financial Inc. | 0.00% | Add +117.0% | 447,538 | $19.9M |
| Franklin Resources Inc. | 0.00% | Reduce -1.2% | 427,154 | $19.0M |
| Seven Grand Managers, LLC | 1.35% | Add +33.3% | 400,000 | $17.8M |
| Victory Capital Management Inc. | 0.01% | Add +29.7% | 392,122 | $17.4M |
| Sei Investments Co. | 0.01% | Add +236.3% | 340,255 | $15.1M |
| Intrinsic Edge Capital Management LLC | 2.78% | Reduce -7.4% | 322,519 | $14.3M |
| Bank of America Corp. | 0.00% | Add +57.7% | 303,861 | $13.5M |
| Burkehill Global Management, LP | 0.89% | Add +93.3% | 290,000 | $12.9M |
| Jump Financial, LLC | 0.17% | Add +1404.1% | 285,266 | $12.7M |
| Millennium Management | 0.01% | Add +79.6% | 284,664 | $12.6M |
| Delta Global Management LP | 0.90% | Add +452.6% | 279,029 | $12.4M |
| Norges Bank | 0.00% | — | 277,200 | $12.3M |
| Massachusetts Financial Services Co. | 0.00% | Reduce -8.0% | 273,908 | $12.2M |
| Woodline Partners LP | 0.04% | No change | 261,111 | $11.6M |
| Penn Capital Management Company, LLC | 0.89% | New | 252,125 | $11.2M |
| Axiom Investors LLC | 0.09% | New | 243,174 | $10.8M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.02% | Add +17.1% | 234,244 | $10.4M |
| Morgan Stanley | 0.00% | Reduce -57.6% | 220,879 | $9.8M |
| Tocqueville Asset Management L.P. | 0.14% | Reduce -4.3% | 220,775 | $9.8M |
| Federated Hermes, Inc. | 0.01% | Reduce -20.0% | 200,000 | $8.9M |
| Renaissance Technologies | 0.01% | New | 195,099 | $8.7M |
| BNP Paribas Financial Markets | 0.01% | New | 191,020 | $8.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +111.5% | 187,064 | $8.3M |
| Royce & Associates LP | 0.08% | New | 181,466 | $8.1M |
| Lykos Global Management, LP | 5.49% | — | 175,000 | $7.8M |
| Monashee Investment Management LLC | 4.59% | Add +16.7% | 175,000 | $7.8M |
| Northern Trust Corp. | 0.00% | Add +464.1% | 169,614 | $7.5M |
| UBS Group AG | 0.00% | Add +1944.5% | 162,884 | $7.2M |
| New York State Common Retirement Fund | 0.01% | New | 162,191 | $7.2M |
| Soros Fund Management | 0.12% | Add +48.2% | 154,560 | $6.9M |
| Optiver Holding B.V. | 0.12% | New | 152,285 | $6.8M |
| Manufacturers Life Insurance Company, The | 0.01% | Add +241.8% | 146,944 | $6.5M |
| Two Sigma Investments, LP | 0.01% | Add +180.6% | 140,331 | $6.2M |
| Unisphere Establishment | 0.04% | Add +35.0% | 135,000 | $6.0M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -67.3% | 130,486 | $5.8M |
| Polar Capital Holdings Plc | 0.03% | New | 123,992 | $5.5M |
| LMR Partners LLP | 0.06% | No change | 109,795 | $4.9M |
| King Luther Capital Management Corp. | 0.02% | New | 103,819 | $4.6M |
| Raymond James Financial Inc. | 0.00% | Add +693.9% | 102,387 | $4.5M |
| Hudson Bay Capital Management LP | 0.03% | Add +146.8% | 101,552 | $4.5M |
| Schonfeld Strategic Advisors LLC | 0.02% | Reduce -54.1% | 100,000 | $4.4M |
| Quinn Opportunity Partners LLC | 0.17% | Reduce -45.6% | 88,512 | $3.9M |
| TD Asset Management Inc | 0.00% | Add +26.9% | 80,508 | $3.6M |
| Coastal Bridge Advisors, LLC | 0.26% | Add +1.1% | 77,415 | $3.4M |
| Russell Investments Group, Ltd. | 0.00% | New | 76,351 | $3.4M |
| Mad River Investors | 1.52% | Add +0.6% | 75,050 | $3.3M |
| Blackstone Inc. | 0.01% | Add +50.0% | 75,000 | $3.3M |
| Maven Securities LTD | 0.39% | New | 69,920 | $3.1M |
| Capelight Capital Asset Management LP | 2.88% | — | 63,000 | $2.8M |
| Bank of New York Mellon Corp | 0.00% | Add +810.6% | 60,418 | $2.7M |
| one8zero8, LLC | 0.57% | New | 58,415 | $2.6M |
| Barclays PLC | 0.00% | Add +259.1% | 57,104 | $2.5M |
| Tudor Investment Corporation | 0.01% | Add +23.0% | 56,006 | $2.5M |
| Credit Agricole S A | 0.01% | New | 51,002 | $2.3M |
| Harvey Partners, LLC | 0.20% | No change | 50,000 | $2.2M |
| Panoramic Capital, LLC | 1.17% | New | 46,087 | $2.0M |
| State of Wisconsin Investment Board | 0.00% | New | 42,556 | $1.9M |
| Calamos Advisors LLC | 0.01% | New | 41,364 | $1.8M |
| Osaic Holdings, Inc. | 0.00% | Add +22.8% | 40,222 | $1.8M |
| Covalis Capital LLP | 0.14% | New | 40,000 | $1.8M |
| Nuveen, LLC | 0.00% | New | 39,115 | $1.7M |
| Maltese Capital Management LLC | 0.31% | Reduce -75.8% | 38,675 | $1.7M |
| XTX Topco Ltd | 0.04% | New | 38,390 | $1.7M |
| Pekin Hardy Strauss, Inc. | 0.15% | Add +41.5% | 36,290 | $1.6M |
| Wells Fargo & Company | 0.00% | Add +912.8% | 35,590 | $1.6M |
| Grandeur Peak Global Advisors, LLC | 0.19% | Add +1.4% | 31,977 | $1.4M |
| Quadrature Capital Ltd | 0.01% | New | 31,915 | $1.4M |
| Swiss National Bank | 0.00% | New | 31,800 | $1.4M |
| Element Capital Management LLC | 0.64% | New | 27,855 | $1.2M |
| Rhumbline Advisers | 0.00% | New | 27,350 | $1.2M |
| Bullseye Asset Management LLC | 0.64% | New | 26,711 | $1.2M |
| Hound Partners, LLC | 0.15% | No change | 25,000 | $1.1M |
| Atlas Wealth Partners, LLC | 1.19% | Add +11.8% | 24,474 | $1.1M |
| Alliancebernstein L.P. | 0.00% | New | 23,100 | $1.0M |
| VARCOV Co. | 0.39% | — | 22,389 | $994K |
| Symmetry Investments LP | 0.18% | New | 22,000 | $976K |
| First Trust Advisors LP | 0.00% | Add +3.5% | 21,671 | $962K |
"% of holder's portfolio" is MIAX's weight in each manager's 13F, not the share of Miami International Holdings the manager owns.