Miami International HoldingsMIAX
13F holders, Q1 2026 (March 31)202holders +41
74new positions
33sold out
7famous investors
$38.92avg. 13F price*
At the end of Q1 2026, 202 institutions reported holding Miami International Holdings (MIAX) in their 13F filings, up 41 from Q4 2025. 74 opened new positions and 33 sold out. The largest holders were T. Rowe Price Investment Management, Inc. ($161.3M), Horizon Kinetics Asset Management LLC ($134.3M) and Susquehanna International Group, LLP ($128.3M). 7 famous investors held it, including George Soros (0.1% of Soros Fund Management's portfolio), Paul Tudor Jones (0.1% of Tudor Investment Corporation's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Miami International Holdings
- CUSIP
- 59356Q108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 74 | $124.0M |
| Exits | 33 | $77.9M |
All 13F filers, Q4 2025 → Q1 2026: 15,440,598 shares bought and 3,479,652 shares sold, net +11,960,946 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 202 holders
| T. Rowe Price Investment Management, Inc. | 0.11% | Add +37.0% | 4,145,618 | $161.3M |
| Horizon Kinetics Asset Management LLC | 1.46% | Add +89.7% | 3,451,549 | $134.3M |
| Susquehanna International Group, LLP | 0.17% | Add +0.3% | 3,296,346 | $128.3M |
| BlackRock, Inc. | 0.00% | Add +27.3% | 2,232,680 | $86.9M |
| Citadel Advisors | 0.05% | Add +159.5% | 1,607,780 | $62.6M |
| Invesco Ltd. | 0.01% | Add +23.9% | 1,585,003 | $61.7M |
| Alyeska Investment Group, L.P. | 0.16% | Add +12.6% | 1,447,454 | $56.3M |
| Vanguard Capital Management LLC | 0.00% | — | 1,414,979 | $55.1M |
| Vanguard Portfolio Management LLC | 0.00% | — | 1,374,946 | $53.5M |
| Adage Capital Partners Gp, L.L.C. | 0.07% | Add +41.5% | 1,246,999 | $48.5M |
| American Century Companies Inc. | 0.02% | Reduce -15.7% | 1,221,485 | $47.5M |
| JPMorgan Chase & Co. | 0.00% | Add +52.0% | 1,238,006 | $46.4M |
| Morgan Stanley | 0.00% | Add +419.3% | 1,146,956 | $44.6M |
| Allspring Global Investments Holdings, LLC | 0.07% | Add +19.3% | 1,112,261 | $43.8M |
| North Reef Capital Management LP | 1.36% | Reduce -19.8% | 1,014,274 | $39.5M |
| Ghisallo Capital Management LLC | 1.08% | Add +79.4% | 1,000,000 | $38.9M |
| Bank of America Corp. | 0.00% | Add +196.5% | 900,882 | $35.1M |
| Two Sigma Investments, LP | 0.03% | Add +536.9% | 893,718 | $34.8M |
| Lord, Abbett & Co. LLC | 0.11% | Add +30.5% | 860,687 | $33.5M |
| Geode Capital Management, LLC | 0.00% | Add +52.1% | 779,782 | $30.4M |
| State Street Corp. | 0.00% | Add +23.6% | 712,329 | $27.7M |
| Blair William & Co. | 0.07% | Add +1.7% | 665,781 | $25.9M |
| Caldwell Investment Management Ltd. | 9.77% | Reduce -10.2% | 663,810 | $24.9M |
| BNP Paribas Financial Markets | 0.01% | Add +199.7% | 572,456 | $22.3M |
| Franklin Resources Inc. | 0.01% | Add +33.0% | 568,174 | $22.1M |
| Seven Grand Managers, LLC | 1.43% | Add +37.5% | 550,000 | $21.4M |
| Sei Investments Co. | 0.02% | Add +54.7% | 526,363 | $20.5M |
| Millennium Management | 0.02% | Add +82.2% | 518,701 | $20.2M |
| Ameriprise Financial Inc. | 0.00% | Add +13.8% | 509,452 | $19.8M |
| Clearstead Advisors, LLC | 0.18% | New | 503,662 | $19.6M |
| Wellington Management Group LLP | 0.00% | Reduce -27.8% | 444,851 | $17.3M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -26.6% | 426,308 | $16.6M |
| UBS Group AG | 0.00% | Add +159.9% | 423,405 | $16.5M |
| Driehaus Capital Management LLC | 0.11% | Reduce -25.5% | 396,698 | $15.4M |
| Victory Capital Management Inc. | 0.01% | Reduce -0.7% | 389,570 | $15.2M |
| Massachusetts Financial Services Co. | 0.00% | Add +24.6% | 341,309 | $13.3M |
| D. E. Shaw & Co. | 0.01% | New | 320,762 | $12.5M |
| Tocqueville Asset Management L.P. | 0.18% | Add +41.4% | 312,135 | $12.1M |
| Royce & Associates LP | 0.12% | Add +70.4% | 309,276 | $12.0M |
| Burkehill Global Management, LP | 0.59% | No change | 290,000 | $11.3M |
| Delta Global Management LP | 0.92% | Add +3.1% | 287,659 | $11.2M |
| Intrinsic Edge Capital Management LLC | 1.96% | Reduce -14.4% | 276,019 | $10.7M |
| Penn Capital Management Company, LLC | 0.83% | Add +8.6% | 273,834 | $10.7M |
| Barclays PLC | 0.00% | Add +380.3% | 274,247 | $10.7M |
| Renaissance Technologies | 0.02% | Add +39.2% | 271,500 | $10.6M |
| Woodline Partners LP | 0.04% | No change | 261,111 | $10.2M |
| Tudor Investment Corporation | 0.05% | Add +363.8% | 259,765 | $10.1M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.02% | Add +2.5% | 240,000 | $9.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +26.9% | 237,309 | $9.2M |
| Northern Trust Corp. | 0.00% | Add +37.9% | 233,968 | $9.1M |
| Nuveen, LLC | 0.00% | Add +492.9% | 231,908 | $9.0M |
| Trexquant Investment LP | 0.06% | New | 215,549 | $8.4M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 202,588 | $7.9M |
| Federated Hermes, Inc. | 0.01% | Add +0.6% | 201,145 | $7.8M |
| Occudo Quantitative Strategies LP | 0.38% | New | 151,676 | $7.1M |
| New York State Common Retirement Fund | 0.01% | Add +10.4% | 179,023 | $7.0M |
| Manufacturers Life Insurance Company, The | 0.01% | Add +11.6% | 163,981 | $6.4M |
| Axiom Investors LLC | 0.07% | Reduce -32.9% | 163,282 | $6.4M |
| T. Rowe Price Associates Inc. | 0.00% | Add +22.0% | 159,186 | $6.2M |
| Schonfeld Strategic Advisors LLC | 0.05% | Add +57.7% | 157,683 | $6.1M |
| Optiver Holding B.V. | 0.22% | Add +0.2% | 152,596 | $5.9M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 149,904 | $5.8M |
| Soros Fund Management | 0.10% | Reduce -14.2% | 132,600 | $5.2M |
| Portolan Capital Management, LLC | 0.27% | New | 128,819 | $5.0M |
| Prana Capital Management, LP | 0.15% | Add +617.7% | 123,353 | $4.8M |
| Marshall Wace, LLP | 0.01% | New | 122,619 | $4.8M |
| Aquatic Capital Management LLC | 0.13% | New | 119,528 | $4.7M |
| Raymond James Financial Inc. | 0.00% | Add +16.6% | 119,419 | $4.6M |
| Polar Capital Holdings Plc | 0.02% | Reduce -4.3% | 118,674 | $4.6M |
| Truist Financial Corp. | 0.01% | New | 117,767 | $4.6M |
| King Luther Capital Management Corp. | 0.02% | Add +13.0% | 117,282 | $4.6M |
| TD Asset Management Inc | 0.00% | Add +31.7% | 106,040 | $4.1M |
| Citigroup Inc. | 0.00% | Add +783.1% | 105,421 | $4.1M |
| Caprock Group, LLC | 0.10% | Add +908.2% | 100,585 | $3.9M |
| Quantbot Technologies LP | 0.15% | New | 96,009 | $3.7M |
| MBL Wealth, LLC | 0.26% | New | 86,960 | $3.4M |
| Voloridge Investment Management, LLC | 0.01% | New | 85,621 | $3.3M |
| Qube Research & Technologies Ltd | 0.00% | New | 82,474 | $3.2M |
| Mad River Investors | 1.14% | Add +8.3% | 81,250 | $3.2M |
| Wexford Capital LP | 0.52% | New | 80,400 | $3.1M |
| Coastal Bridge Advisors, LLC | 0.22% | Add +0.8% | 78,016 | $3.0M |
| Bank of New York Mellon Corp | 0.00% | Add +29.1% | 77,990 | $3.0M |
| Spirepoint Private Client, LLC | 0.26% | New | 68,883 | $2.7M |
| Bullseye Asset Management LLC | 1.49% | Add +146.8% | 65,928 | $2.6M |
| Wells Fargo & Company | 0.00% | Add +71.9% | 61,186 | $2.4M |
| one8zero8, LLC | 0.51% | Add +1.1% | 59,065 | $2.3M |
| Quantinno Capital Management LP | 0.00% | New | 55,487 | $2.2M |
| G2 Investment Partners Management LLC | 0.50% | New | 52,600 | $2.0M |
| Engineers Gate Manager LP | 0.03% | New | 51,736 | $2.0M |
| Corient Private Wealth LP | 0.00% | New | 51,430 | $2.0M |
| Credit Agricole S A | 0.01% | No change | 51,002 | $2.0M |
| Atlas Brown,Inc. | 0.60% | New | 50,974 | $2.0M |
| Covalis Capital LLP | 0.12% | Add +25.0% | 50,000 | $1.9M |
| C2P Capital Advisory Group, LLC d.b.a. Prosperity Capital Advisors | 0.10% | New | 46,948 | $1.8M |
| Osaic Holdings, Inc. | 0.00% | Add +11.7% | 44,942 | $1.7M |
| Squarepoint Ops LLC | 0.00% | New | 40,222 | $1.6M |
| Swiss Life Asset Management Ltd | 0.01% | New | 15,287 | $1.6M |
| Entropy Technologies, LP | 0.07% | New | 40,076 | $1.6M |
| LPL Financial LLC | 0.00% | New | 39,932 | $1.6M |
| State of Wisconsin Investment Board | 0.00% | Reduce -7.5% | 39,345 | $1.5M |
"% of holder's portfolio" is MIAX's weight in each manager's 13F, not the share of Miami International Holdings the manager owns.