DUBLIN 4, L2
ALKERMES PLC.ALKS— Latest position per institution from SEC 13F filings
15
Institutional holders
170.87M
Total shares held
5.28B
Estimated value
8.54M
Avg. position size
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
29.11M
Value
701.49M
Filed
Jun 30, 2024
BLACKROCK, INC.
CIK 2012383
Shares
28.31M
Value
1B
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
18.01M
Value
503.85M
Filed
Dec 31, 2025
BAKER BROS. ADVISORS LP
CIK 1263508
Shares
10.01M
Value
354.03M
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
9.51M
Value
336.31M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
9.47M
Value
334.69M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
7.43M
Value
262.63M
Filed
Mar 31, 2026
SARISSA CAPITAL MANAGEMENT LP
CIK 1577524
Shares
7.04M
Value
197.25M
Filed
Sep 30, 2023
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
6.16M
Value
217.83M
Filed
Mar 31, 2026
AMERICAN CENTURY COMPANIES INC
CIK 748054
Shares
6.07M
Value
214.71M
Filed
Mar 31, 2026
JPMORGAN CHASE & CO
CIK 19617
Shares
5.18M
Value
145.06M
Filed
Dec 31, 2025
PICTET ASSET MANAGEMENT SA
CIK 1361570
Shares
4.79M
Value
150.07M
Filed
Jun 30, 2023
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
4.66M
Value
164.94K
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
4.52M
Value
159.85M
Filed
Mar 31, 2026
COMMODORE CAPITAL LP
CIK 1831942
Shares
4.20M
Value
148.51M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
4.18M
Value
147.91M
Filed
Mar 31, 2026
DEEP TRACK CAPITAL, LP
CIK 1856083
Shares
3.59M
Value
126.95M
Filed
Mar 31, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
2.97M
Value
105.03M
Filed
Mar 31, 2026
FIRST TRUST ADVISORS LP
CIK 1125816
Shares
2.97M
Value
104.98M
Filed
Mar 31, 2026
HARDMAN JOHNSTON GLOBAL ADVISORS LLC
CIK 1006364
Shares
2.67M
Value
72.41M
Filed
Mar 31, 2024
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK FINANCE, INC. | 1364742 | 29.11M | 701.49M | Jun 30, 2024 |
| 2 | BLACKROCK, INC. | 2012383 | 28.31M | 1B | Mar 31, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 18.01M | 503.85M | Dec 31, 2025 |
| 4 | BAKER BROS. ADVISORS LP | 1263508 | 10.01M | 354.03M | Mar 31, 2026 |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 9.51M | 336.31M | Mar 31, 2026 |
| 6 | STATE STREET CORP | 93751 | 9.47M | 334.69M | Mar 31, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 7.43M | 262.63M | Mar 31, 2026 |
| 8 | SARISSA CAPITAL MANAGEMENT LP | 1577524 | 7.04M | 197.25M | Sep 30, 2023 |
| 9 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 6.16M | 217.83M | Mar 31, 2026 |
| 10 | AMERICAN CENTURY COMPANIES INC | 748054 | 6.07M | 214.71M | Mar 31, 2026 |
| 11 | JPMORGAN CHASE & CO | 19617 | 5.18M | 145.06M | Dec 31, 2025 |
| 12 | PICTET ASSET MANAGEMENT SA | 1361570 | 4.79M | 150.07M | Jun 30, 2023 |
| 13 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 4.66M | 164.94K | Mar 31, 2026 |
| 14 | DIMENSIONAL FUND ADVISORS LP | 354204 | 4.52M | 159.85M | Mar 31, 2026 |
| 15 | COMMODORE CAPITAL LP | 1831942 | 4.20M | 148.51M | Mar 31, 2026 |
| 16 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 4.18M | 147.91M | Mar 31, 2026 |
| 17 | DEEP TRACK CAPITAL, LP | 1856083 | 3.59M | 126.95M | Mar 31, 2026 |
| 18 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 2.97M | 105.03M | Mar 31, 2026 |
| 19 | FIRST TRUST ADVISORS LP | 1125816 | 2.97M | 104.98M | Mar 31, 2026 |
| 20 | HARDMAN JOHNSTON GLOBAL ADVISORS LLC | 1006364 | 2.67M | 72.41M | Mar 31, 2024 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.