Alkermes plc.
ALKS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001520262
In the last 90 days, Alkermes plc. insiders filed 0 open-market purchases and 5 sales; 427 institutions reported holding it in 13F filings for Q2 2026, worth $9.33B in total; no superinvestor holds it.
Key figures
- Market capClose on Nov 9, 2026
- $7.76B
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $1.07M in total
- 5
- 13F holdersQ2 2026, +39 vs. previous quarter
- 427
- 13F valueReported value at the end of Q2 2026
- $9.33B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $1.48B
- −5.2% year over year
- Net income, FY2025
- $241.7M
- −34.2% year over year
- Free cash flow, FY2025
- $480.3M
- +18.4% year over year
- Revenue, Q3 FY2026
- $480.1M
- +21.8% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 15, 2026.
- Short interest
- 19.0M
- Shares sold short
- Change
- +1.23M
- +6.9% vs. previous
- Days to cover
- 9.12
- At average daily volume
Superinvestors holding ALKS, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding ALKS at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-market purchases and sales by Alkermes plc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Nov 3, 2026 (view filing)7:18 PM ET | Nov 3 | Same day | Gaffin David JosephEVP, CLO, Alkermes, Inc. | SSale | −2.04K | $46.17 | −$94.0K | −0.9%219.4K after | 10b5-1 |
| Oct 2, 2026 (view filing)6:22 PM ET | Oct 2 | Same day | Gaffin David JosephEVP, CLO, Alkermes, Inc. | SSale | −2.03K | $41.03 | −$83.5K | −0.9%221.4K after | 10b5-1 |
| Sep 3, 2026 (view filing)6:32 PM ET | Sep 3 | Same day | Gaffin David JosephEVP, CLO, Alkermes, Inc. | SSale | −2.03K | $48.01 | −$97.7K | −0.9%223.4K after | 10b5-1 |
| Sep 1, 2026 (view filing)7:08 PM ET | Sep 1 | Same day | Hopkinson Craig C.EVP R&D, Chief Medical Officer | SSale | −9.00K | $46.99 | −$422.9K | −12.1%65.4K after | 10b5-1 |
| Aug 17, 2026 (view filing)6:53 PM ET | Aug 17 | Same day | Nichols Christian ToddSVP, Chief Commercial Officer | SSale | −7.58K | $49.23 | −$372.9K | −6.9%102.2K after | 2 lots10b5-1 |
| Aug 3, 2026 (view filing)7:16 PM ET | Aug 3 | Same day | snyderman nancy lynn MDDirector | SSale | −44.5K | $50.35 | −$2.24M | −74.3%15.4K after | |
| Aug 3, 2026 (view filing)7:12 PM ET | Aug 3 | Same day | Hopkinson Craig C.EVP R&D, Chief Medical Officer | SSale | −9.00K | $48.58 | −$437.2K | −11.5%69.4K after | 10b5-1 |
| Aug 3, 2026 (view filing)7:09 PM ET | Aug 3 | Same day | Gaffin David JosephEVP, CLO, Alkermes, Inc. | SSale | −2.03K | $48.58 | −$98.8K | −0.9%225.5K after | 10b5-1 |
| Jul 6, 2026 (view filing)4:48 PM ET | Jul 6 | Same day | Gaffin David JosephEVP, CLO, Alkermes, Inc. | SSale | −2.03K | $54.03 | −$109.9K | −0.9%227.5K after | 10b5-1 |
| Jul 1, 2026 (view filing)6:29 PM ET | Jul 1 | Same day | Hopkinson Craig C.EVP R&D, Chief Medical Officer | SSale | −9.00K | $51.51 | −$463.6K | −10.9%73.4K after | 2 lots10b5-1 |
Top 10 13F holders, Q2 2026
See all 427 holdersThe largest institutional positions in Alkermes plc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 29,235,739 | $1.53B | 0.02% | +921,329+3.3% | Added |
| Baker Bros. Advisors LP | 10,012,267 | $524.6M | 2.63% | 00.0% | Unchanged |
| Vanguard Portfolio Management LLC | 9,490,818 | $497.3M | 0.02% | −20,294−0.2% | Reduced |
| State Street Corp | 9,160,575 | $480.0M | 0.01% | −304,711−3.2% | Reduced |
| Vanguard Capital Management LLC | 7,515,025 | $393.7M | 0.01% | +87,628+1.2% | Added |
| Price T Rowe Associates Inc | 6,737,328 | $353.0M | 0.04% | +2,072,752+44.4% | Added |
| Renaissance Technologies LLC | 6,460,928 | $338.5M | 0.47% | +300,500+4.9% | Added |
| Geode Capital Management, LLC | 4,477,876 | $234.7M | 0.01% | +295,609+7.1% | Added |
| Dimensional Fund Advisors LP | 4,194,873 | $219.8M | 0.04% | −327,505−7.2% | Reduced |
| Deep Track Capital, LP | 4,000,000 | $209.6M | 3.09% | +409,677+11.4% | Added |
Holders of 5% or more of ALKS
See all 5 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Alkermes plc..
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 15.80%25.6M shares | – | Apr 28, 20251 filing | Apr 28, 2025 | SEC |
| Baker Bros. Advisors LP | 13G | 6.10%10.0M shares | New | Feb 17, 20261 filing | Feb 17, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 5.80%9.65M shares | New | Apr 28, 20261 filing | Apr 28, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.21%8.68M shares | New | Apr 28, 20261 filing | Apr 28, 2026 | SEC |
| State Street Corp | 13G | 5.20%8.54M shares | +0.30 ppfrom 4.90% | Jan 24, 20243 filings | Nov 10, 2025 | SEC |
Politician trades
All politician trades in ALKS1 member of Congress reported 2 trades in Alkermes plc. since 2020. Newest filings:
| Filed | Politician | Type | Amount |
|---|---|---|---|
| Oct 12, 2026 |  Gilbert Ray Cisneros, Jr. House · CA | Buy | $1K-$15K |
| Sep 4, 2026 | Gilbert Ray Cisneros, Jr. House · CA | Buy | $15K-$50K |
House · CA · Oct 12, 2026
Buy$1K-$15K
House · CA · Sep 4, 2026
Buy$15K-$50K