Who owns Alkermes plc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ALKS from SEC Form 13F filings across 426 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 426 institutions disclosed 178.0M shares of Alkermes plc. worth $9.32B — about 106% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
426
13F holders
$9.32B
value, 2026 filers
106%
of shares outstanding (178.0M sh)
100
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ALKS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 29.2M | $1.53B | 0.0% | 17.4% | +3.3% |
| 2 | BAKER BROS. ADVISORS LP | 10.0M | $524.6M | 2.6% | 6% | 0.0% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 9.5M | $497.3M | 0.0% | 5.7% | -0.2% |
| 4 | STATE STREET CORP | 9.2M | $480.0M | 0.0% | 5.5% | -3.2% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 7.5M | $393.7M | 0.0% | 4.5% | +1.2% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | 6.7M | $353.0M | 0.0% | 4% | +44.4% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 6.5M | $338.5M | 0.5% | 3.8% | +4.9% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 4.5M | $234.7M | 0.0% | 2.7% | +7.1% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 4.2M | $219.8M | 0.0% | 2.5% | -7.2% |
| 10 | Deep Track Capital, LP | 4.0M | $209.6M | 3.1% | 2.4% | +11.4% |
| 11 | AMERICAN CENTURY COMPANIES INC | 4.0M | $207.2M | 0.1% | 2.4% | -34.9% |
| 12 | Holocene Advisors, LP | 3.6M | $188.7M | 0.4% | 2.1% | +55.4% |
| 13 | Commodore Capital LP | 3.0M | $157.2M | 9.4% | 1.8% | -28.6% |
| 14 | WELLINGTON MANAGEMENT GROUP LLP | 2.8M | $147.5M | 0.0% | 1.7% | -5.2% |
| 15 | PRIMECAP MANAGEMENT CO/CA/ | 2.5M | $132.5M | 0.1% | 1.5% | -0.4% |
| 16 | FIRST TRUST ADVISORS LP | 2.4M | $126.8M | 0.1% | 1.4% | -18.5% |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.3M | $122.3M | 0.0% | 1.4% | +4.4% |
| 18 | Nuveen, LLC | 2.3M | $121.8M | 0.0% | 1.4% | -5.5% |
| 19 | NORGES BANKNEW | 2.2M | $113.0M | 0.0% | 1.3% | new |
| 20 | BVF INC/IL | 2.2M | $112.9M | 2.9% | 1.3% | +7.7% |
| 21 | GOLDMAN SACHS GROUP INC | 2.0M | $106.0M | 0.0% | 1.2% | +7.5% |
| 22 | Bain Capital Life Sciences Investors, LLC | 1.9M | $101.5M | 6.0% | 1.2% | +217.7% |
| 23 | NORTHERN TRUST CORP | 1.8M | $96.0M | 0.0% | 1.1% | +7.9% |
| 24 | MORGAN STANLEY | 1.8M | $91.8M | 0.0% | 1% | +0.9% |
| 25 | RTW INVESTMENTS, LP | 1.7M | $87.6M | 0.7% | 1% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.