MGTX
MeiraGTx Holdings plc · Healthcare · Biotechnology
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +12.6% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 63 | +4 | 21.97M | $296.37M | +8 | −4 |
| Q1 2026 | 61 | +4 | 17.36M | $150.28M | +6 | −2 |
| Q4 2025 | 57 | 0 | 17.52M | $139.25M | — | — |
| Q3 2025 | 15 | +1 | 13.50M | $111.10M | +1 | — |
| Q2 2025 | 11 | 0 | 11.90M | $77.60M | +1 | −1 |
| Q1 2025 | 8 | 0 | 7.28M | $49.35M | +1 | −1 |
| Q4 2024 | 8 | 0 | 6.77M | $41.23M | — | — |
| Q3 2024 | 7 | -1 | 6.26M | $26.11M | — | −1 |
| Q2 2024 | 8 | — | 6.33M | $26.64M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Adage Capital Partners ✦ | 6.03M | +7.1% | $39.35M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 2.86M | — | $18.66M | 0.0% | n/c | 1 | SEC ↗ ×9 |
| 3 | Millennium Management ✦ | 785.18K | New | $5.12M | 0.0% | New | 1 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 682.20K | +5.9% | $4.45M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 557.57K | -6.8% | $3.64M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 6 | The Vanguard Group ✦ (passive) | 420.67K | — | $2.74M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 7 | Wellington Management ✦ | 222.42K | +7.5% | $1.45M | 0.0% | ▲ Add | 5 | SEC ↗ ×3 |
| 8 | Citadel Advisors ✦ | 201.61K | +324.5% | $1.31M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 9 | AQR Capital Management ✦ | 106.63K | +29.8% | $695,201 | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 10 | T. Rowe Price ✦ | 22.78K | +8.8% | $149,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 11 | Fidelity (FMR) ✦ | 5.46K | — | $35,619 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Millennium Management | $5.12M | 0.0% |
Exited
| D. E. Shaw & Co. | $303,819 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 132 holders, 67.36M shares, $581.89M 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 · 27.66K sh · $294,292
Officer, Director · 62.00K sh · $859,320
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology