Alkermes Plc (ALKS)
Healthcare
Drug Manufacturers - Specialty & Generic
49.00 $
-2.1%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Alkermes Plc (ALKS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 92.5% of the shares are freely tradable; institutional investors hold 110.5%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
110.5%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
1.4%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
92.5%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
12.5%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
168Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 16.88 | 28,314,410 | +0.1 | 03/31/2026 |
| Baker Bros Advisors LP | 5.97 | 10,012,267 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.67 | 9,511,112 | +0.0 | 03/31/2026 |
| State Street Corp | 5.64 | 9,465,286 | -0.1 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.43 | 7,427,397 | +0.0 | 03/31/2026 |
| Renaissance Technologies Corp | 3.67 | 6,160,428 | -7.6 | 03/31/2026 |
| American Century Companies Inc | 3.62 | 6,072,103 | +1.9 | 03/31/2026 |
| T. Rowe Price Associates, Inc. | 2.78 | 4,664,576 | -48.2 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.06 | 10,164,436 | +0.0 | 07/28/2026 |
| Vanguard Morn Total Stk Mkt Idx Investor | 3.16 | 5,298,506 | -0.1 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.