ALKS
Alkermes plc · Healthcare · Drug Manufacturers - Specialty & Generic
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -12.1% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 119 | +1 | 122.91M | $6.44B | +12 | −12 |
| Q1 2026 | 122 | -3 | 122.08M | $4.29B | +3 | −7 |
| Q4 2025 | 124 | +2 | 142.93M | $4.00B | +3 | — |
| Q3 2025 | 20 | -1 | 95.12M | $2.85B | — | −2 |
| Q2 2025 | 19 | +2 | 84.64M | $2.42B | +2 | — |
| Q1 2025 | 14 | 0 | 39.73M | $1.31B | — | — |
| Q4 2024 | 14 | 0 | 45.20M | $1.30B | — | — |
| Q3 2024 | 13 | +2 | 43.42M | $1.22B | +2 | — |
| Q2 2024 | 11 | — | 42.07M | $1.01B | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | T. Rowe Price ✦ | 11.79M | -3.8% | $389.25M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 2 | State Street Global Advisors ✦ (passive) | 8.02M | -9.0% | $264.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | Renaissance Technologies ✦ | 5.74M | +4.8% | $189.50M | 0.3% | ▲ Add | 4 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 3.94M | +3.2% | $130.12M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 5 | Wellington Management ✦ | 3.10M | -55.8% | $102.26M | 0.0% | ▼ Trim | 4 | SEC ↗ ×5 |
| 6 | PRIMECAP Management ✦ | 3.00M | -3.0% | $99.20M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 7 | Norges Bank ✦ (passive) | 1.92M | -2.8% | $63.28M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | Two Sigma Investments ✦ | 557.94K | +69.8% | $18.42M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | AQR Capital Management ✦ | 532.26K | -34.4% | $17.58M | 0.0% | ▼ Trim | 4 | SEC ↗ ×5 |
| 10 | D. E. Shaw & Co. ✦ | 468.48K | -15.7% | $15.47M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 11 | Fisher Asset Management ✦ | 321.68K | -2.9% | $10.62M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | Millennium Management ✦ | 177.10K | -72.3% | $5.85M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 13 | Citadel Advisors ✦ | 84.37K | +58.6% | $2.79M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 14 | Gotham Asset Management ✦ | 79.67K | +157.5% | $2.63M | 0.0% | ▲ Add | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 384 holders, 171.47M shares, $5.79B 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 · 2.03K sh · $83,455
Officer · 2.03K sh · $97,652
Officer · 9.00K sh · $422,874
Officer · 6.91K sh · $339,967
Officer · 664 sh · $32,969
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology