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 ($1.9m this quarter). Holder counts are more reliable. Shares outstanding: 164.7m as of 2024-07-19, 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 ≈ $24.10. Options: 8 managers hold calls ($5.1m notional), 7 hold puts ($2.2m).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 275 |
| Q4 2022 | 279 |
| Q1 2023 | 270 |
| Q2 2023 | 294 |
| Q3 2023 | 309 |
| Q4 2023 | 302 |
| Q1 2024 | 336 |
| Q2 2024 | 322 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 142 | 120 |
| Q1 2023 | 127 | 131 |
| Q2 2023 | 156 | 122 |
| Q3 2023 | 194 | 113 |
| Q4 2023 | 167 | 144 |
| Q1 2024 | 171 | 142 |
| Q2 2024 | 172 | 167 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $26.3m | $8.7m | 0.33 |
| Q4 2023 | $6.0m | $6.1m | 1.01 |
| Q1 2024 | $14.2m | $12.4m | 0.87 |
| Q2 2024 | $5.1m | $2.2m | 0.43 |
Biggest buyers
| BAKER BROS. ADVISORS LP | New | +4.2m |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +2.7m |
| ARMISTICE CAPITAL, LLC | Added | +2.0m |
| Commodore Capital LP | New | +1.4m |
| Pacer Advisors, Inc. | Added | +1.4m |
| AMERICAN CENTURY COMPANIES INC | Added | +1.0m |
| RTW INVESTMENTS, LP | Added | +1.0m |
| Affinity Asset Advisors, LLC | Added | +575.0k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | New | +570.7k |
| MPM BIOIMPACT LLC | New | +557.6k |
Biggest sellers
| MORGAN STANLEY | Reduced | -3.7m |
| Hardman Johnston Global Advisors LLC | Sold out | -2.7m |
| Pictet Asset Management Holding SA | Reduced | -1.7m |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Sold out | -1.3m |
| JUPITER ASSET MANAGEMENT LTD | Sold out | -1.0m |
| MILLENNIUM MANAGEMENT LLC | Sold out | -660.7k |
| FULLER & THALER ASSET MANAGEMENT, INC. | Sold out | -629.6k |
| TWO SIGMA ADVISERS, LP | Reduced | -612.3k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -537.6k |
| Balyasny Asset Management L.P. | Reduced | -468.2k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.3m93.8k shares |
| BANK OF AMERICA CORP /DE/ | Unchanged | $891.7k37.0k shares |
| Caption Management, LLC | Reduced | $723.0k30.0k shares |
| CITADEL ADVISORS LLC | Reduced | $433.8k18.0k shares |
| SIMPLEX TRADING, LLC | Added | $409.0k17.0k shares |
| WOLVERINE TRADING, LLC | Reduced | $327.8k13.6k shares |
| GROUP ONE TRADING LLC | Reduced | $12.1k500 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| Caption Management, LLC | Unchanged | $723.0k30.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $600.1k24.9k shares |
| CITADEL ADVISORS LLC | Reduced | $371.1k15.4k shares |
| JANE STREET GROUP, LLC | New | $272.3k11.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $147.0k6.1k shares |
| GROUP ONE TRADING LLC | Added | $57.8k2.4k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 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 Q2 2024
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 |
|---|---|---|---|---|---|
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 1 | $815.9k | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 3 | $2.2m | $2.2m |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 3 | $454.3k | $378.4k |
| Q2 2024 | 0 | — | 0 | — | — |
None reported in Q2 2024.
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.02% of their portfolio | 29.1m $701.5m | Reduced -60.9k |
| VANGUARD GROUP INC 0.01% of their portfolio | 20.0m $482.0m | Reduced -161.3k |
| WELLINGTON MANAGEMENT GROUP LLP 0.06% of their portfolio | 14.4m $345.9m | Reduced -537.6k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.03% of their portfolio | 11.0m $265.4m | Added +2.7m |
| STATE STREET CORP 0.01% of their portfolio | 9.2m $222.1m | Added +211.1k |
| RTW INVESTMENTS, LP 2.63% of their portfolio | 7.1m $170.1m | Added +1.0m |
| Pacer Advisors, Inc. 0.31% of their portfolio | 5.6m $135.9m | Added +1.4m |
| RENAISSANCE TECHNOLOGIES LLC 0.22% of their portfolio | 5.5m $132.2m | Reduced -403.3k |
| BAKER BROS. ADVISORS LP 1.29% of their portfolio | 4.2m $100.8m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 3.9m $94.8m | Added +191.2k |
| Deep Track Capital, LP 2.52% of their portfolio | 3.5m $84.3m | Unchanged |
| PRIMECAP MANAGEMENT CO/CA/ 0.06% of their portfolio | 3.4m $81.6m | Reduced -87.4k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 2.9m $69.5m | Added +371.0k |
| ARMISTICE CAPITAL, LLC 1.70% of their portfolio | 2.7m $65.1m | Added +2.0m |
| Bank of New York Mellon Corp 0.01% of their portfolio | 2.4m $58.4m | Reduced -460.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 2.4m $57.4m | Added +45.7k |
| AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio | 2.2m $53.1m | Added +1.0m |
| NORGES BANK 0.01% of their portfolio | 2.1m $51.3m | Added +68.9k |
| MORGAN STANLEY 0.00% of their portfolio | 2.1m $51.0m | Reduced -3.7m |
| Artisan Partners Limited Partnership 0.07% of their portfolio | 2.0m $48.7m | Reduced -43.5k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 2.0m $47.3m | Added +4.1k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.8m $42.7m | Reduced -24.2k |
| FIRST TRUST ADVISORS LP 0.04% of their portfolio | 1.5m $37.1m | Added +65.2k |
| Commodore Capital LP 2.26% of their portfolio | 1.4m $33.1m | New |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.16% of their portfolio | 1.3m $31.7m | Added +33.9k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.2m $29.8m | Reduced -147.2k |
| SEGALL BRYANT & HAMILL, LLC 0.52% of their portfolio | 1.2m $29.4m | Added +138.5k |
| Woodline Partners LP 0.25% of their portfolio | 1.1m $25.8m | Added +1.2k |
| Pictet Asset Management Holding SA 0.03% of their portfolio | 1.0m $24.7m | Reduced -1.7m |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 1.0m $24.7m | Reduced -225.3k |
| AXA S.A. 0.03% of their portfolio | 962.5k $23.2m | Added +481.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 947.3k $22.8m | Reduced -31.2k |
| PANAGORA ASSET MANAGEMENT INC 0.10% of their portfolio | 860.8k $20.7m | Added +97.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 812.2k $19.6m | Reduced -323.2k |
| AQR CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 803.5k $19.4m | Added +379.2k |
| Invesco Ltd. 0.00% of their portfolio | 696.2k $16.8m | Added +95.9k |
| Affinity Asset Advisors, LLC 2.47% of their portfolio | 650.0k $15.7m | Added +575.0k |
| FMR LLC 0.00% of their portfolio | 609.8k $14.7m | Added +505.2k |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.02% of their portfolio | 570.7k $13.8m | New |
| Legal & General Group Plc 0.00% of their portfolio | 559.9k $13.5m | Reduced -23.4k |
| MPM BIOIMPACT LLC 2.09% of their portfolio | 557.6k $13.4m | New |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 550.1k $13.3m | Reduced -51.8k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 541.3k $13.0m | Added +71.8k |
| EAGLE ASSET MANAGEMENT INC 0.07% of their portfolio | 531.7k $13.0m | Reduced -87.5k |
| GLENMEDE TRUST CO NA 0.06% of their portfolio | 524.1k $12.6m | Added +5.2k |
| Man Group plc 0.03% of their portfolio | 516.8k $12.5m | Reduced -356.8k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 497.3k $12.0m | Added +7.7k |
| Palo Alto Investors LP 1.38% of their portfolio | 495.6k $11.9m | Unchanged |
| FEDERATED HERMES, INC. 0.03% of their portfolio | 490.3k $11.8m | Reduced -146 |
| RICE HALL JAMES & ASSOCIATES, LLC 0.68% of their portfolio | 467.8k $11.3m | Added +67.0k |
| UBS Group AG 0.00% of their portfolio | 466.8k $11.2m | Added +54.1k |
| VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 454.9k $11.0m | Added +148.6k |
| Aberdeen Group plc 0.02% of their portfolio | 409.0k $9.9m | Added +134.2k |
| LOOMIS SAYLES & CO L P 0.01% of their portfolio | 404.5k $9.7m | Reduced -362.6k |
| TD Asset Management Inc 0.01% of their portfolio | 397.6k $9.6m | Added +48.6k |
| Public Sector Pension Investment Board 0.06% of their portfolio | 372.3k $9.0m | Added +30.3k |
| Amundi 0.00% of their portfolio | 336.7k $8.2m | Added +28.0k |
| LSV ASSET MANAGEMENT 0.02% of their portfolio | 327.7k $7.9m | Added +115.3k |
| California Public Employees Retirement System 0.01% of their portfolio | 323.5k $7.8m | Added +7.8k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 323.1k $7.8m | Reduced -18.7k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 322.2k $7.8m | Added +267.9k |
| Swiss National Bank 0.01% of their portfolio | 316.2k $7.6m | Added +4.4k |
| PRUDENTIAL FINANCIAL INC 0.01% of their portfolio | 307.5k $7.4m | Reduced -69.3k |
| MACQUARIE GROUP LTD 0.01% of their portfolio | 300.0k $7.2m | Unchanged |
| Rafferty Asset Management, LLC 0.03% of their portfolio | 288.5k $7.0m | Reduced -25.1k |
| Prosight Management, LP 1.98% of their portfolio | 275.0k $6.6m | Added +60.0k |
| MACKENZIE FINANCIAL CORP 0.01% of their portfolio | 261.4k $6.3m | Reduced -6.3k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 260.9k $6.3m | Added +65.4k |
| CAPITAL FUND MANAGEMENT S.A. 0.07% of their portfolio | 258.0k $6.2m | Added +113.7k |
| Krensavage Asset Management, LLC 2.85% of their portfolio | 257.6k $6.2m | Unchanged |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio | 248.4k $6.0m | New |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 245.3k $5.9m | Added +170.5k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.05% of their portfolio | 244.9k $5.9m | Added +23.6k |
| Fisher Asset Management, LLC 0.00% of their portfolio | 242.6k $5.8m | Added +29.2k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 227.0k $5.5m | Reduced -25.6k |
| Handelsbanken Fonder AB 0.02% of their portfolio | 219.9k $5.3m | Added +44.7k |
| Squarepoint Ops LLC 0.02% of their portfolio | 217.2k $5.2m | Reduced -346.4k |
| S&CO INC 0.36% of their portfolio | 214.7k $5.2m | Added +4.0k |
| Allspring Global Investments Holdings, LLC 0.01% of their portfolio | 209.5k $5.0m | Added +88.8k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 207.4k $5.0m | Added +132.6k |
| PFM Health Sciences, LP 0.27% of their portfolio | 205.1k $4.9m | Reduced -224.5k |
| Connor, Clark & Lunn Investment Management Ltd. 0.02% of their portfolio | 203.4k $4.9m | Added +10.4k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 203.3k $4.9m | Reduced -12.2k |
| BARCLAYS PLC 0.00% of their portfolio | 203.0k $4.9m | Reduced -31.7k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 201.6k $4.9m | Reduced -7.6k |
| ADAR1 Capital Management, LLC 0.95% of their portfolio | 196.6k $4.7m | Added +40.0k |
| SECTOR GAMMA AS 1.75% of their portfolio | 194.0k $4.7m | Reduced -58.3k |
| ExodusPoint Capital Management, LP 0.05% of their portfolio | 170.6k $4.1m | New |
| TODD ASSET MANAGEMENT LLC 0.08% of their portfolio | 160.6k $3.9m | Added +30.5k |
| CITIGROUP INC 0.00% of their portfolio | 159.3k $3.8m | Reduced -246.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 157.9k $3.8m | Reduced -2.2k |
| DANSKE BANK A/S 0.01% of their portfolio | 156.7k $3.8m | Added +13.7k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 155.1k $3.7m | Reduced -2.2k |
| Rhenman & Partners Asset Management AB 0.35% of their portfolio | 150.0k $3.6m | Added +40.0k |
| Foundry Partners, LLC 0.19% of their portfolio | 144.6k $3.5m | Added +2.2k |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 140.5k $3.4m | Reduced -70.4k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 137.3k $3.3m | Reduced -9.1k |
| Trexquant Investment LP 0.05% of their portfolio | 136.8k $3.3m | Added +62.4k |
| ALPS ADVISORS INC 0.02% of their portfolio | 132.0k $3.2m | Added +14.1k |
| DAFNA Capital Management LLC 0.69% of their portfolio | 120.7k $2.9m | New |