ALKERMES PLC ALKS
SHS · Common Stock · CUSIP G01767105
- SectorHealth care
- IndustryPharmaceutical Preparations
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($3.8m this quarter). Holder counts are more reliable. Shares outstanding: 164.3m as of 2022-10-28, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $22.33. Options: 11 managers hold calls ($11.9m notional), 10 hold puts ($16.0m).
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | $2.8m126.2k shares |
| JANE STREET GROUP, LLC | — | $2.7m121.2k shares |
| BANK OF MONTREAL /CAN/ | — | $2.2m90.0k shares |
| Parallax Volatility Advisers, L.P. | — | $945.0k42.3k shares |
| GROUP ONE TRADING LLC | — | $855.0k38.3k shares |
| CITADEL ADVISORS LLC | — | $784.0k35.1k shares |
| Caption Management, LLC | — | $669.0k30.0k shares |
| TWO SIGMA SECURITIES, LLC | — | $433.0k19.4k shares |
| Jefferies Group LLC | — | $361.7k16.2k shares |
| SIMPLEX TRADING, LLC | — | $218.0k9.8k shares |
Biggest puts
| CITADEL ADVISORS LLC | — | $11.9m534.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | $1.8m79.7k shares |
| Caption Management, LLC | — | $669.0k30.0k shares |
| JANE STREET GROUP, LLC | — | $563.0k25.2k shares |
| Parallax Volatility Advisers, L.P. | — | $447.0k20.0k shares |
| Jefferies Group LLC | — | $426.5k19.1k shares |
| GROUP ONE TRADING LLC | — | $159.0k7.1k shares |
| SIMPLEX TRADING, LLC | — | $13.0k600 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | — | $00 shares |
| Cutler Group LLC / CA | — | $0100 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-04-28 | 15.8% |
| BAKER BROS. ADVISORS LP 13G · institution new · filed 2026-02-17 | 6.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-28 | 5.8% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-28 | 5.2% |
| STATE STREET CORP 13G · institution +0.3 pts · filed 2025-11-10 | 5.2% |
Fell to 5% or below in the last year: PRICE T ROWE ASSOCIATES INC /MD/ (2.8%, 2026-05-15), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q3 2022
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2020 | 0 | — | 0 | — | — |
| Q1 2021 | 0 | — | 0 | — | — |
| Q2 2021 | 0 | — | 0 | — | — |
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 0 | — | — |
| Q1 2022 | 1 | $10.0k | 1 | $354.7k | — |
| Q2 2022 | 0 | — | 5 | $15.7m | — |
| Q3 2022 | 0 | — | 0 | — | — |
None reported in Q3 2022.
Holders, Q3 2022
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.01% of their portfolio | 18.1m $404.4m | — |
| BlackRock Inc. 0.01% of their portfolio | 15.5m $345.9m | — |
| Sarissa Capital Management LP 35.43% of their portfolio | 14.0m $313.5m | — |
| WELLINGTON MANAGEMENT GROUP LLP 0.03% of their portfolio | 6.7m $150.1m | — |
| STATE STREET CORP 0.01% of their portfolio | 6.5m $144.4m | — |
| Hardman Johnston Global Advisors LLC 5.76% of their portfolio | 5.7m $128.0m | — |
| RENAISSANCE TECHNOLOGIES LLC 0.18% of their portfolio | 5.6m $124.1m | — |
| PRIMECAP MANAGEMENT CO/CA/ 0.12% of their portfolio | 5.3m $119.4m | — |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.02% of their portfolio | 4.7m $104.7m | — |
| T. Rowe Price Investment Management, Inc. 0.08% of their portfolio | 4.6m $101.9m | — |
| ARMISTICE CAPITAL, LLC 2.13% of their portfolio | 3.8m $84.7m | — |
| CITADEL ADVISORS LLC 0.10% of their portfolio | 3.7m $82.2m | — |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 3.0m $65.9m | — |
| Bank of New York Mellon Corp 0.01% of their portfolio | 2.5m $55.7m | — |
| Holocene Advisors, LP 0.35% of their portfolio | 2.4m $54.4m | — |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.40% of their portfolio | 2.2m $50.2m | — |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 2.1m $47.0m | — |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 2.1m $46.2m | — |
| Artisan Partners Limited Partnership 0.08% of their portfolio | 2.0m $44.4m | — |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 1.9m $43.0m | — |
| FIRST TRUST ADVISORS LP 0.05% of their portfolio | 1.7m $37.7m | — |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.28% of their portfolio | 1.6m $35.8m | — |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.6m $35.8m | — |
| NORGES BANK 0.01% of their portfolio | 1.6m $34.7m | — |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 1.5m $32.5m | — |
| Krensavage Asset Management, LLC 10.04% of their portfolio | 1.4m $31.5m | — |
| MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio | 1.3m $28.9m | — |
| Polar Capital Holdings Plc 0.18% of their portfolio | 1.3m $28.3m | — |
| FRED ALGER MANAGEMENT, LLC 0.14% of their portfolio | 1.3m $28.2m | — |
| TWO SIGMA ADVISERS, LP 0.07% of their portfolio | 1.1m $25.0m | — |
| PUTNAM INVESTMENTS LLC 0.05% of their portfolio | 1.1m $24.8m | — |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.12% of their portfolio | 1.0m $22.7m | — |
| FMR LLC 0.00% of their portfolio | 1.0m $22.4m | — |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.03% of their portfolio | 887.7k $19.8m | — |
| EAGLE ASSET MANAGEMENT INC 0.12% of their portfolio | 855.5k $19.1m | — |
| BAKER BROS. ADVISORS LP 0.12% of their portfolio | 815.0k $18.2m | — |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.13% of their portfolio | 813.5k $18.2m | — |
| MORGAN STANLEY 0.00% of their portfolio | 770.0k $17.2m | — |
| PANAGORA ASSET MANAGEMENT INC 0.12% of their portfolio | 748.3k $16.7m | — |
| AXA S.A. 0.03% of their portfolio | 660.5k $14.7m | — |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 629.3k $14.1m | — |
| Palo Alto Investors LP 1.07% of their portfolio | 603.4k $13.5m | — |
| INTERNATIONAL BIOTECHNOLOGY TRUST PLC 4.25% of their portfolio | 593.0k $13.2m | — |
| GLENMEDE TRUST CO NA 0.08% of their portfolio | 545.7k $12.2m | — |
| PICTET ASSET MANAGEMENT SA 0.02% of their portfolio | 542.9k $12.1m | — |
| TWO SIGMA INVESTMENTS, LP 0.04% of their portfolio | 522.1k $11.7m | — |
| GREAT POINT PARTNERS LLC 2.73% of their portfolio | 507.5k $11.3m | — |
| Prosight Management, LP 6.16% of their portfolio | 502.1k $11.2m | — |
| Invesco Ltd. 0.00% of their portfolio | 450.9k $10.1m | — |
| ACADIAN ASSET MANAGEMENT LLC 0.05% of their portfolio | 445.7k $9.9m | — |
| SEGALL BRYANT & HAMILL, LLC 0.12% of their portfolio | 445.7k $10.0m | — |
| Hood River Capital Management LLC 0.38% of their portfolio | 440.0k $9.8m | — |
| MACQUARIE GROUP LTD 0.01% of their portfolio | 425.1k $9.5m | — |
| 13D Management LLC 4.85% of their portfolio | 415.1k $9.3m | — |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 407.6k $9.1m | — |
| California Public Employees Retirement System 0.01% of their portfolio | 389.7k $8.7m | — |
| Swiss National Bank 0.01% of their portfolio | 387.5k $8.7m | — |
| Price Jennifer C. 1.66% of their portfolio | 360.6k $8.1m | — |
| Thrivent Financial for Lutherans 0.02% of their portfolio | 359.0k $8.0m | — |
| TD Asset Management Inc 0.01% of their portfolio | 351.4k $7.9m | — |
| Ensign Peak Advisors, Inc 0.02% of their portfolio | 345.4k $7.7m | — |
| Cubist Systematic Strategies, LLC 0.06% of their portfolio | 345.1k $7.7m | — |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.05% of their portfolio | 323.1k $7.2m | — |
| Tekla Capital Management LLC 0.28% of their portfolio | 309.6k $6.9m | — |
| HealthCor Management, L.P. 0.85% of their portfolio | 303.5k $6.8m | — |
| EMERALD ADVISERS, LLC 0.35% of their portfolio | 301.3k $6.7m | — |
| Ally Bridge Group (NY) LLC 4.42% of their portfolio | 300.0k $6.7m | — |
| Legal & General Group Plc 0.00% of their portfolio | 299.6k $6.7m | — |
| CITIGROUP INC 0.01% of their portfolio | 299.4k $6.7m | — |
| Rafferty Asset Management, LLC 0.07% of their portfolio | 290.6k $6.5m | — |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 279.3k $6.2m | — |
| CAPITAL FUND MANAGEMENT S.A. 0.15% of their portfolio | 267.7k $6.0m | — |
| SEIZERT CAPITAL PARTNERS, LLC 0.34% of their portfolio | 267.1k $6.0m | — |
| Assenagon Asset Management S.A. 0.03% of their portfolio | 263.0k $5.9m | — |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 248.2k $5.5m | — |
| JUPITER ASSET MANAGEMENT LTD 0.08% of their portfolio | 241.5k $5.4m | — |
| Schonfeld Strategic Advisors LLC 0.04% of their portfolio | 233.9k $5.2m | — |
| VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 233.1k $5.2m | — |
| SECTORAL ASSET MANAGEMENT INC 1.02% of their portfolio | 232.4k $5.2m | — |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.09% of their portfolio | 225.9k $5.0m | — |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 216.3k $4.8m | — |
| TWINBEECH CAPITAL LP 0.13% of their portfolio | 214.2k $4.8m | — |
| EMERALD MUTUAL FUND ADVISERS TRUST 0.29% of their portfolio | 206.2k $4.6m | — |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 205.0k $4.6m | — |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 204.1k $4.6m | — |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 202.9k $4.5m | — |
| Tamarack Advisers, LP 2.64% of their portfolio | 200.0k $4.5m | — |
| Integral Health Asset Management, LLC 0.91% of their portfolio | 200.0k $4.5m | — |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 195.1k $4.4m | — |
| Verition Fund Management LLC 0.03% of their portfolio | 194.8k $4.3m | — |
| Hillsdale Investment Management Inc. 0.39% of their portfolio | 194.3k $4.3m | — |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 192.8k $4.3m | — |
| Connor, Clark & Lunn Investment Management Ltd. 0.03% of their portfolio | 192.5k $4.3m | — |
| Man Group plc 0.02% of their portfolio | 192.4k $4.3m | — |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 186.3k $4.2m | — |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 183.2k $4.1m | — |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 181.7k $4.1m | — |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 179.6k $4.0m | — |
| ALGERT GLOBAL LLC 0.23% of their portfolio | 169.3k $3.8m | — |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 164.9k $3.7m | — |