MIAX
Miami International Holdings, Inc. · Financial Services · Financial - Capital Markets
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +30.0% ·
net new positions +20.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 83 | +3 | 40.90M | $1.52B | +15 | −11 |
| Q1 2026 | 82 | +13 | 30.93M | $1.20B | +16 | −4 |
| Q4 2025 | 70 | -1 | 23.97M | $1.06B | +2 | −2 |
| Q3 2025 | 17 | +14 | 7.65M | $307.92M | +14 | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | JPMorgan Chase ✦ | 1.62M | — | $65.36M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | JPMorgan Chase ✦ | 1.62M | — | $65.36M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | JPMorgan Chase ✦ | 1.62M | — | $65.36M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | JPMorgan Chase ✦ | 1.62M | — | $65.36M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | JPMorgan Chase ✦ | 1.62M | — | $65.36M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | JPMorgan Chase ✦ | 1.62M | — | $65.36M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | The Vanguard Group ✦ (passive) | 1.38M | New | $55.66M | 0.0% | New | 1 | SEC ↗ |
| 8 | The Vanguard Group ✦ (passive) | 1.38M | New | $55.66M | 0.0% | New | 1 | SEC ↗ |
| 9 | The Vanguard Group ✦ (passive) | 1.38M | New | $55.66M | 0.0% | New | 1 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 975.05K | New | $39.26M | 0.0% | New | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 707.77K | New | $28.49M | 0.0% | New | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 707.77K | New | $28.49M | 0.0% | New | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 707.77K | New | $28.49M | 0.0% | New | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 707.77K | New | $28.49M | 0.0% | New | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 707.77K | New | $28.49M | 0.0% | New | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 707.77K | New | $28.49M | 0.0% | New | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 707.77K | New | $28.49M | 0.0% | New | 1 | SEC ↗ |
| 18 | Adage Capital Partners ✦ | 631.65K | New | $25.43M | 0.0% | New | 1 | SEC ↗ |
| 19 | Wellington Management ✦ | 583.12K | New | $23.48M | 0.0% | New | 1 | SEC ↗ |
| 20 | Wellington Management ✦ | 583.12K | New | $23.48M | 0.0% | New | 1 | SEC ↗ |
| 21 | Wellington Management ✦ | 583.12K | New | $23.48M | 0.0% | New | 1 | SEC ↗ |
| 22 | Wellington Management ✦ | 583.12K | New | $23.48M | 0.0% | New | 1 | SEC ↗ |
| 23 | Morgan Stanley ✦ | 520.98K | — | $20.97M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Morgan Stanley ✦ | 520.98K | — | $20.97M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Morgan Stanley ✦ | 520.98K | — | $20.97M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Morgan Stanley ✦ | 520.98K | — | $20.97M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | T. Rowe Price ✦ | 398.78K | New | $16.05M | 0.0% | New | 1 | SEC ↗ |
| 28 | Goldman Sachs Group ✦ | 193.19K | — | $7.78M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Goldman Sachs Group ✦ | 193.19K | — | $7.78M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Goldman Sachs Group ✦ | 193.19K | — | $7.78M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Geode Capital Management ✦ (passive) | 159.39K | New | $6.42M | 0.0% | New | 1 | SEC ↗ |
| 32 | Geode Capital Management ✦ (passive) | 159.39K | New | $6.42M | 0.0% | New | 1 | SEC ↗ |
| 33 | Millennium Management ✦ | 158.48K | New | $6.38M | 0.0% | New | 1 | SEC ↗ |
| 34 | Soros Fund Management ✦ | 104.26K | New | $4.20M | 0.1% | New | 1 | SEC ↗ |
| 35 | Marshall Wace ✦ | 77.96K | New | $3.14M | 0.0% | New | 1 | SEC ↗ |
| 36 | Marshall Wace ✦ | 77.96K | New | $3.14M | 0.0% | New | 1 | SEC ↗ |
| 37 | Marshall Wace ✦ | 77.96K | New | $3.14M | 0.0% | New | 1 | SEC ↗ |
| 38 | State Street Global Advisors ✦ (passive) | 56.45K | New | $2.27M | 0.0% | New | 1 | SEC ↗ |
| 39 | Two Sigma Investments ✦ | 50.01K | New | $2.01M | 0.0% | New | 1 | SEC ↗ |
| 40 | D. E. Shaw & Co. ✦ | 25.06K | New | $1.01M | 0.0% | New | 1 | SEC ↗ |
| 41 | Fidelity (FMR) ✦ | 75 | New | $3,020 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| The Vanguard Group | $55.66M | 0.0% |
| The Vanguard Group | $55.66M | 0.0% |
| The Vanguard Group | $55.66M | 0.0% |
| Citadel Advisors | $39.26M | 0.0% |
| BlackRock | $28.49M | 0.0% |
| BlackRock | $28.49M | 0.0% |
| BlackRock | $28.49M | 0.0% |
| BlackRock | $28.49M | 0.0% |
| BlackRock | $28.49M | 0.0% |
| BlackRock | $28.49M | 0.0% |
| BlackRock | $28.49M | 0.0% |
| Adage Capital Partners | $25.43M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 200 holders, 49.13M shares, $1.70B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer, Director · 149.70K sh · $6.16M
Officer · 35.00K sh · $1.50M
Director · 5.00K sh · $214,250
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
7.8% of class · View original SEC filing ↗