Latest Period
Q2 2026
Security Snapshot
Alkermes plc. - COMMON STOCK (ALKS) Institutional Ownership
CUSIP: G01767105
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
421
Shares (Excl. Options)
177,911,086
Price
$52.40
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- Security type / class
- Equity / COMMON STOCK
- Symbol
- ALKS on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 177,911,086
- Total 13F value
- $9,316,971,591
- Portfolio coverage rank
- 0.01%
- Share change
- +1,656,146
- Value change
- +$138,161,072
- Number of holders
- 421
- Shares outstanding
- 166,591,536
- SEC-reported price per share
- $50.50
- Insider filing price
- $50.50
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ALKS - Alkermes plc. - COMMON STOCK is tracked under CUSIP G01767105.
- 421 institutions reported positions in Q2 2026.
- 7 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 388 to 421 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $6,203,118,148 to $9,316,971,591.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 421 institutions filings for Q2 2026.
Security key
G01767105
Latest holder period
Q2 2026
13F holders
421
13D/G owners
7
CIK / CUSIP context first
Open Q2 2026 holders
ALKS full holder history
Alkermes plc. SEC filings
Alkermes plc. company facts
Alkermes plc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G01767105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
7
Security
ALKS
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 16% | $737,618,983 | 25,638,477 | BlackRock, Inc. | 31 Mar 2025 | |||
| BAKER BROS. ADVISORS LP | 6.1% | $280,143,231 | 10,012,267 | Baker Bros. Advisors LP | 31 Dec 2025 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.8% | $341,119,900 | 9,647,056 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $306,814,760 | 8,676,888 | Vanguard Capital Management | 31 Mar 2026 | |||
| STATE STREET CORP | 5.2% | +6% | $256,210,530 | +$15,530,430 | 8,540,351 | +6.5% | STATE STREET CORPORATION | 30 Sep 2025 |
| WELLINGTON MANAGEMENT GROUP LLP | 4.3% | $201,749,136 | 7,012,483 | Wellington Management Group LLP | 31 Dec 2024 | |||
| PRICE T ROWE ASSOCIATES INC /MD/ | 2.8% | -55% | $154,023,870 | -$177,559,668 | 4,664,563 | -54% | T. Rowe Price Associates, Inc. | 31 Mar 2026 |
As of 30 Jun 2026, 421 institutional investors reported holding 177,911,086 shares of Alkermes plc. - COMMON STOCK (ALKS). This represents 107% of the company’s total 166,591,536 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
77%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 18% | 29,235,739 | +3.3% | 0.02% | $1,531,806,565 |
| BAKER BROS. ADVISORS LP | 6% | 10,012,267 | 0% | 2.6% | $524,592,729 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.7% | 9,490,818 | -0.21% | 0.02% | $497,271,409 |
| STATE STREET CORP | 5.5% | 9,160,575 | -3.2% | 0.01% | $479,968,327 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 7,515,025 | +1.2% | 0.01% | $393,749,735 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 4% | 6,737,328 | +44% | 0.04% | $353,003,000 |
| RENAISSANCE TECHNOLOGIES LLC | 3.9% | 6,460,928 | +4.9% | 0.47% | $338,520,325 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.7% | 4,477,876 | +7.1% | 0.01% | $234,660,916 |
| DIMENSIONAL FUND ADVISORS LP | 2.5% | 4,194,873 | -7.2% | 0.04% | $219,794,330 |
| Deep Track Capital, LP | 2.4% | 4,000,000 | +11% | 3.1% | $209,580,000 |
| AMERICAN CENTURY COMPANIES INC | 2.4% | 3,954,239 | -35% | 0.09% | $207,182,449 |
| Holocene Advisors, LP | 2.2% | 3,601,472 | +55% | 0.43% | $188,699,125 |
| Commodore Capital LP | 1.8% | 3,000,000 | -29% | 9.4% | $157,185,000 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.7% | 2,814,804 | -5.2% | 0.03% | $147,481,656 |
| PRIMECAP MANAGEMENT CO/CA/ | 1.5% | 2,528,680 | -0.45% | 0.08% | $132,490,188 |
| FIRST TRUST ADVISORS LP | 1.5% | 2,421,016 | -18% | 0.07% | $126,849,134 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.4% | 2,335,117 | +4.4% | 0.02% | $122,348,496 |
| Nuveen, LLC | 1.4% | 2,324,197 | -5.5% | 0.03% | $121,776,303 |
| NORGES BANK | 1.3% | 2,156,814 | 0.01% | $113,006,270 | |
| BVF INC/IL | 1.3% | 2,154,704 | +7.7% | 2.9% | $112,895,716 |
| GOLDMAN SACHS GROUP INC | 1.2% | 2,023,984 | +7.5% | 0.01% | $106,046,642 |
| Bain Capital Life Sciences Investors, LLC | 1.2% | 1,937,938 | +218% | 6% | $101,538,262 |
| NORTHERN TRUST CORP | 1.1% | 1,831,619 | +7.9% | 0.01% | $95,967,679 |
| MORGAN STANLEY | 1.1% | 1,751,882 | +0.91% | 0% | $91,789,896 |
| RTW INVESTMENTS, LP | 1% | 1,672,356 | 0% | 0.75% | $87,623,093 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 177,911,086 | $9,316,971,591 | +$138,161,072 | $52.40 | 421 |
| 2026 Q1 | 176,234,922 | $6,203,118,148 | -$74,408,516 | $35.36 | 388 |
| 2025 Q4 | 180,338,275 | $5,046,961,870 | +$291,978,121 | $27.98 | 363 |
| 2025 Q3 | 169,341,595 | $5,079,979,539 | +$19,240,212 | $30.00 | 352 |
| 2025 Q2 | 169,266,778 | $4,842,815,839 | -$75,320,709 | $28.61 | 349 |
| 2025 Q1 | 170,391,411 | $5,625,587,430 | +$100,126,633 | $33.02 | 368 |
| 2024 Q4 | 167,229,553 | $4,809,633,445 | -$340,228,488 | $28.76 | 339 |
| 2024 Q3 | 178,773,963 | $5,003,514,490 | +$17,540,017 | $27.99 | 333 |
| 2024 Q2 | 179,320,535 | $4,321,913,080 | +$60,416,487 | $24.10 | 317 |
| 2024 Q1 | 176,001,012 | $4,763,281,654 | +$15,935,209 | $27.07 | 330 |
| 2023 Q4 | 175,467,711 | $4,867,418,321 | +$343,345,772 | $27.74 | 297 |
| 2023 Q3 | 163,842,866 | $4,589,236,432 | +$56,577,822 | $28.01 | 304 |
| 2023 Q2 | 160,680,217 | $5,027,116,770 | -$5,814,531 | $31.30 | 288 |
| 2023 Q1 | 161,604,443 | $4,555,535,684 | -$5,594,505 | $28.19 | 263 |
| 2022 Q4 | 162,372,542 | $4,242,746,855 | +$91,252,041 | $26.13 | 273 |
| 2022 Q3 | 159,945,390 | $3,571,769,628 | -$80,096,583 | $22.33 | 264 |
| 2022 Q2 | 156,870,253 | $4,672,860,939 | -$21,124,857 | $29.79 | 262 |
| 2022 Q1 | 157,878,224 | $4,153,400,239 | +$53,403,811 | $26.31 | 231 |
| 2021 Q4 | 156,147,340 | $3,631,040,518 | +$68,229,141 | $23.26 | 203 |
| 2021 Q3 | 152,381,294 | $4,699,818,812 | -$238,782,318 | $30.84 | 218 |
| 2021 Q2 | 161,105,829 | $3,950,984,222 | +$103,219,618 | $24.52 | 213 |
| 2021 Q1 | 157,785,504 | $2,947,852,619 | -$61,698,231 | $18.68 | 187 |
| 2020 Q4 | 161,429,176 | $3,221,459,094 | +$68,763,873 | $19.95 | 199 |
| 2020 Q3 | 164,899,645 | $2,732,070,918 | -$28,388,739 | $16.57 | 172 |
| 2020 Q2 | 159,475,358 | $3,094,659,758 | +$117,571,354 | $19.40 | 158 |