Miami International Holdings, Inc.
MIAX- Exchange
- NYSE
- Industry
- Security Brokers, Dealers & Flotation Companies
- SEC CIK
- 0001438472
In the last 90 days, Miami International Holdings, Inc. insiders filed 0 open-market purchases and 27 sales; 206 institutions reported holding it in 13F filings for Q2 2026, worth $2.68B in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Miami International Holdings, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 206
- +7 vs. Q1 2026
- Shares held
- 72.1M
- +21.9M (+43.6%) vs. Q1 2026
- Total value
- $2.68B
- +$732.4M (+37.6%) vs. Q1 2026
- New holders
- 48
- 93 more added
- Sold out
- 41
- 46 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MIAX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 206 | $2.68B |
| Q1 2026 | 202 | $1.95B |
| Q4 2025 | 161 | $1.66B |
| Q3 2025 | 115 | $1.03B |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Miami International Holdings, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 3,165,686 | $117.6M | 0.00% | +1,750,707+123.7% | Added |
| Susquehanna International Group, LLP | 3,355,043 | $124.7M | 0.11% | +58,697+1.8% | Added |
| Vanguard Portfolio Management LLC | 3,786,418 | $140.7M | 0.01% | +2,411,472+175.4% | Added |
| T. Rowe Price Investment Management, Inc. | 5,032,970 | $187.0M | 0.12% | +887,352+21.4% | Added |
| BlackRock, Inc. | 5,071,754 | $188.5M | 0.00% | +2,839,074+127.2% | Added |
| Horizon Kinetics Asset Management LLC | 7,842,173 | $291.4M | 3.30% | +4,390,624+127.2% | Added |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −1,607,780−100.0% | Sold out |
| Penn Capital Management Co Inc | 0 | $0 | 0.00% | −273,834−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −271,500−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −261,111−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −259,765−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −215,549−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −151,676−100.0% | Sold out |
| Axiom Investors LLC | 0 | $0 | 0.00% | −163,282−100.0% | Sold out |
| Soros Fund Management LLCSuperinvestorSoros Fund Management | 0 | $0 | 0.00% | −132,600−100.0% | Sold out |
| Portolan Capital Management, LLC | 0 | $0 | 0.00% | −128,819−100.0% | Sold out |
| Prana Capital Management, LP | 0 | $0 | 0.00% | −123,353−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −119,528−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −96,009−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −85,621−100.0% | Sold out |
| Wexford Capital LP | 0 | $0 | 0.00% | −80,400−100.0% | Sold out |
| Quantinno Capital Management LP | 0 | $0 | 0.00% | −55,487−100.0% | Sold out |
| CI Private Wealth, LLC | 0 | $0 | 0.00% | −51,430−100.0% | Sold out |
| Covalis Capital LLP | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −40,222−100.0% | Sold out |
| Swiss Life Asset Management Ltd | 0 | $0 | 0.00% | −15,287−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −40,076−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −37,167−100.0% | Sold out |
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −25,753−100.0% | Sold out |
| Virginia Retirement Systems Et Al | 0 | $0 | 0.00% | −24,500−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −17,143−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −15,940−100.0% | Sold out |
| IMC-Chicago, LLC | 0 | $0 | 0.00% | −14,577−100.0% | Sold out |
| Verdad Advisers, LP | 0 | $0 | 0.00% | −12,282−100.0% | Sold out |
| Blackstone Group Inc. | 0 | $0 | 0.00% | −11,508−100.0% | Sold out |
| Independent Solutions Wealth Management, LLC | 0 | $0 | 0.00% | −11,056−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −10,674−100.0% | Sold out |
| Quinn Opportunity Partners LLC | 0 | $0 | 0.00% | −10,486−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −8,476−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −5,534−100.0% | Sold out |
| Emerald Mutual Fund Advisers Trust | 0 | $0 | 0.00% | −2,500−100.0% | Sold out |
| HFM Investment Advisors, LLC | 0 | $0 | 0.00% | −1,301−100.0% | Sold out |
| MCF Advisors LLC | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| Cornerstone Financial Management LLC | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| Central Trust Co | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Janus Henderson Group PLC | – | – | – | – | Not filed |
| MSRH, LLC | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |