Alkermes Ownership | Who Owns Alkermes?
Alkermes Ownership Summary
Alkermes is owned by 21.48% institutional investors, 1.49% insiders, and 77.03% retail investors. Blackrock is the largest institutional shareholder, holding 17.33% of ALKS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.94% of its assets in Alkermes shares.
ALKS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Alkermes | 21.48% | 1.49% | 77.03% |
| Sector | Healthcare Stocks | 42.50% | 10.81% | 46.69% |
| Industry | Biotech Stocks | 45.24% | 10.75% | 44.01% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 29.11M | 17.33% | $701.49M |
| Blackrock funding, inc. /de | 27.97M | 16.96% | $839.16M |
| Vanguard group | 18.18M | 11.02% | $545.39M |
| Price t rowe associates inc /md/ | 10.24M | 6.21% | $307.15M |
| State street | 8.54M | 5.18% | $256.21M |
| Baker bros. advisors lp | 8.09M | 4.91% | $242.74M |
| Renaissance | 6.29M | 3.81% | $188.78M |
| American century companies | 4.40M | 2.67% | $131.92M |
| Geode capital management | 4.06M | 2.46% | $121.86M |
| Jpmorgan chase | 3.93M | 2.38% | $117.85M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Sio capital management | 674.84K | 5.12% | $20.25M |
| Commodore capital lp | 3.10M | 4.54% | $92.90M |
| Affinity asset advisors | 1.25M | 3.27% | $37.50M |
| Healthinvest partners ab | 252.88K | 2.99% | $805.39K |
| Bioimpact capital | 549.26K | 2.70% | $16.48M |
| Krensavage asset management | 207.82K | 2.66% | $6.24M |
| Opaleye management | 450.00K | 1.91% | $13.50M |
| Baker bros. advisors lp | 8.09M | 1.75% | $242.74M |
| Paradigm biocapital advisors lp | 1.72M | 1.47% | $51.58M |
| Stempoint capital lp | 241.64K | 1.45% | $7.25M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Norges bank | 1.97M | 0.01% | 1.97M |
| Baker bros. advisors lp | 8.09M | 1.75% | 1.68M |
| Arrowstreet capital, limited partnership | 1.21M | 0.02% | 1.11M |
| Virginia retirement systems et al | 901.33K | 0.18% | 901.33K |
| Nuveen asset management | 1.66M | 0.01% | 867.49K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Deep track capital, lp | - | - | -3.50M |
| Rtw investments, lp | 1.67M | 0.62% | -3.01M |
| Hardman johnston global advisors | - | - | -2.67M |
| Camber capital management lp | - | - | -1.50M |
| Armistice capital | - | - | -1.45M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 1.97M | 0.01% | 1.97M | $56.68M |
| Sio capital management | 674.84K | 5.12% | 674.84K | $20.25M |
| Opaleye management | 450.00K | 1.91% | 450.00K | $13.50M |
| Mesirow institutional investment management | 376.87K | 0.83% | 376.87K | $10.84M |
| Axa investment managers | 236.90K | 0.02% | 236.90K | $7.11M |
Sold Out
| Holder | Change |
|---|---|
| Harbor investment advisory | -1.00 |
| Activest wealth management | -1.00 |
| Financial gravity asset management | -1.00 |
| Mather group, llc. | -2.00 |
| Financial synergies wealth advisors | -9.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 135 | -62.60% | 35,434,318 | -79.06% | 21 | 0.20% | 61 | -69.19% | 61 | -48.74% |
| Jun 30, 2025 | 355 | -6.58% | 168,942,978 | -0.75% | 102 | 0.94% | 194 | 3.19% | 118 | -10.61% |
| Mar 31, 2025 | 377 | 7.41% | 169,214,033 | 1.17% | 103 | 0.99% | 185 | 6.94% | 132 | 7.32% |
| Dec 31, 2024 | 341 | - | 166,201,187 | -5.94% | 101 | 0.87% | 167 | -3.47% | 121 | 2.54% |
| Sep 30, 2024 | 339 | 3.99% | 176,619,359 | -1.51% | 108 | 0.95% | 171 | -2.29% | 117 | 7.34% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 9.81M | 5.94% | - |
| Vanguard US Total Market Shares ETF | 5.16M | 3.17% | -174.71K |
| Vanguard Total Stock Mkt Idx Inv | 5.20M | 3.15% | -137.84K |
| T. Rowe Price Mid-Cap Value | 4.28M | 2.59% | 452.41K |
| Vanguard Small Cap Index | 4.00M | 2.42% | -29.47K |
| iShares Russell 2000 ETF | 3.92M | 2.37% | - |
| T. Rowe Price US Mid-Cap Value Equity | 3.83M | 2.32% | -1.15M |
| Pacer US Small Cap Cash Cows 100 ETF | 2.98M | 1.84% | -21.71K |
| T. Rowe Price U.S. Mid-Cap Val Eq Tr-Z | 2.64M | 1.62% | -69.71K |
| Avantis US Small Cap Value ETF | 2.68M | 1.62% | 7.85K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Dec 01, 2025 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | Sell | $117.20K |
| Nov 03, 2025 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | Sell | $273.44K |
| Oct 15, 2025 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | Sell | $283.78K |
| Jun 10, 2025 | Nichols Christian Todd | SVP, Chief Commercial Officer | Sell | $103.65K |
| Jun 09, 2025 | Nichols Christian Todd | SVP, Chief Commercial Officer | Sell | $106.49K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | 3 |
| 2025 Q3 | - | - |
| 2025 Q2 | - | 2 |
| 2025 Q1 | - | 8 |
| 2024 Q4 | - | 7 |
ALKS Ownership FAQ
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