Alkermes plc. ALKS
CIK 0001520262 · CUSIP G01767105
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $904.96M 27,406,368 shares | 0.02% | -446.54K(-1.60%)Reduced | SEC filing ↗ May 2, 2025 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $601.38M 18,212,674 shares | 0.01% | -283.51K(-1.50%)Reduced | SEC filing ↗ May 9, 2025 | ▾ |
| 03 | PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history | $389.25M 11,788,245 shares | 0.05% | -468.20K(-3.80%)Reduced | SEC filing ↗ May 14, 2025 | ▾ |
| 04 | STATE STREET CORP CIK 93751 · View history | $264.91M 8,022,670 shares | 0.01% | -792.30K(-9.00%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 05 | RTW INVESTMENTS, LP CIK 1493215 · View history | $227.33M 6,884,698 shares | 3.48% | -673.14K(-8.90%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 06 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $189.50M 5,738,828 shares | 0.29% | +260.10K(+4.70%)Added | SEC filing ↗ May 14, 2025 | ▾ |
| 07 | JPMORGAN CHASE & CO CIK 19617 · View history | $172.86M 5,234,995 shares | 0.01% | +4.35M(+488.60%)Added | SEC filing ↗ May 12, 2025 | ▾ |
| 08 | BAKER BROS. ADVISORS LP CIK 1263508 · View history | $148.04M 4,483,285 shares | 1.64% | +301.53K(+7.20%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 09 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $130.12M 3,939,694 shares | 0.01% | +121.05K(+3.20%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 10 | AMERICAN CENTURY COMPANIES INC CIK 748054 · View history | $114.44M 3,465,674 shares | 0.07% | +14.97K(+0.40%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 11 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $102.26M 3,096,879 shares | 0.02% | -3.92M(-55.80%)Reduced | SEC filing ↗ May 13, 2025 | ▾ |
| 12 | UBS Group AG CIK 1610520 · View history | $100.49M 3,043,209 shares | 0.02% | +2.72M(+851.20%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 13 | PRIMECAP MANAGEMENT CO/CA/ CIK 763212 · View history | $99.20M 3,004,095 shares | 0.08% | -91.42K(-3.00%)Reduced | SEC filing ↗ May 9, 2025 | ▾ |
| 14 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $98.76M 2,991,005 shares | 0.02% | -28.50K(-0.90%)Reduced | SEC filing ↗ May 13, 2025 | ▾ |
| 15 | Avoro Capital Advisors LLC CIK 1633313 · View history | $80.90M 2,450,000 shares | 1.26% | 0(0.00%)Unchanged | SEC filing ↗ May 15, 2025 | ▾ |
| 16 | LOOMIS SAYLES & CO L P CIK 312348 · View history | $80.58M 2,440,283 shares | 0.12% | +137.38K(+6.00%)Added | SEC filing ↗ May 14, 2025 | ▾ |
| 17 | Holocene Advisors, LP CIK 1700574 · View history | $71.81M 2,174,602 shares | 0.21% | +1.92M(+743.20%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 18 | MORGAN STANLEY CIK 895421 · View history | $71.44M 2,163,599 shares | 0.01% | +344.60K(+18.90%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · Amended · View history | $67.61M 2,047,403 shares | 0.01% | -21.56K(-1.00%)Reduced | SEC filing ↗ Sep 15, 2025 | ▾ |
| 20 | Nuveen, LLC CIK 1871926 · View history | $66.69M 2,019,668 shares | 0.02% | — | SEC filing ↗ May 12, 2025 | ▾ |
Showing 20 / 372 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
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