CAMBRIDGE, MA
ALNYLAM PHARMACEUTICALS, INC.ALNY— Latest position per institution from SEC 13F filings
15
Institutional holders
115.25M
Total shares held
33.73B
Estimated value
5.76M
Avg. position size
FMR LLC
CIK 315066
Shares
15.02M
Value
4.52B
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
13.55M
Value
5.39B
Filed
Dec 31, 2025
CAPITAL WORLD INVESTORS
CIK 1422849
Shares
11.14M
Value
3.35B
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
10.91M
Value
3.28B
Filed
Jun 30, 2026
CAPITAL RESEARCH GLOBAL INVESTORS
CIK 1422848
Shares
9.75M
Value
2.94B
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
9.55M
Value
2.32B
Filed
Jun 30, 2024
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
6.54M
Value
1.97B
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
6.03M
Value
1.82B
Filed
Jun 30, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
CIK 1897612
Shares
5.64M
Value
1.70M
Filed
Jun 30, 2026
INVESCO LTD.
CIK 914208
Shares
3.75M
Value
1.13B
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
3.56M
Value
1.07B
Filed
Jun 30, 2026
JPMORGAN CHASE & CO
CIK 19617
Shares
2.68M
Value
785.32M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
2.64M
Value
791.35M
Filed
Jun 30, 2026
BAILLIE GIFFORD & CO
CIK 1088875
Shares
2.44M
Value
734.48M
Filed
Jun 30, 2026
NORGES BANK
CIK 1374170
Shares
2.27M
Value
683.88M
Filed
Jun 30, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
2.11M
Value
635.30M
Filed
Jun 30, 2026
ORBIS ALLAN GRAY LTD
CIK 1663865
Shares
1.99M
Value
598.27M
Filed
Jun 30, 2026
DODGE & COX
CIK 200217
Shares
1.96M
Value
588.63M
Filed
Jun 30, 2026
TWO SIGMA INVESTMENTS, LP
CIK 1179392
Shares
1.88M
Value
564.71M
Filed
Jun 30, 2026
AMERICAN CENTURY COMPANIES INC
CIK 748054
Shares
1.85M
Value
558.10M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | FMR LLC | 315066 | 15.02M | 4.52B | Jun 30, 2026 |
| 2 | VANGUARD GROUP INC | 102909 | 13.55M | 5.39B | Dec 31, 2025 |
| 3 | CAPITAL WORLD INVESTORS | 1422849 | 11.14M | 3.35B | Jun 30, 2026 |
| 4 | BLACKROCK, INC. | 2012383 | 10.91M | 3.28B | Jun 30, 2026 |
| 5 | CAPITAL RESEARCH GLOBAL INVESTORS | 1422848 | 9.75M | 2.94B | Jun 30, 2026 |
| 6 | BLACKROCK FINANCE, INC. | 1364742 | 9.55M | 2.32B | Jun 30, 2024 |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 6.54M | 1.97B | Jun 30, 2026 |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 6.03M | 1.82B | Jun 30, 2026 |
| 9 | T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 1897612 | 5.64M | 1.70M | Jun 30, 2026 |
| 10 | INVESCO LTD. | 914208 | 3.75M | 1.13B | Jun 30, 2026 |
| 11 | STATE STREET CORP | 93751 | 3.56M | 1.07B | Jun 30, 2026 |
| 12 | JPMORGAN CHASE & CO | 19617 | 2.68M | 785.32M | Jun 30, 2026 |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 2.64M | 791.35M | Jun 30, 2026 |
| 14 | BAILLIE GIFFORD & CO | 1088875 | 2.44M | 734.48M | Jun 30, 2026 |
| 15 | NORGES BANK | 1374170 | 2.27M | 683.88M | Jun 30, 2026 |
| 16 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 2.11M | 635.30M | Jun 30, 2026 |
| 17 | ORBIS ALLAN GRAY LTD | 1663865 | 1.99M | 598.27M | Jun 30, 2026 |
| 18 | DODGE & COX | 200217 | 1.96M | 588.63M | Jun 30, 2026 |
| 19 | TWO SIGMA INVESTMENTS, LP | 1179392 | 1.88M | 564.71M | Jun 30, 2026 |
| 20 | AMERICAN CENTURY COMPANIES INC | 748054 | 1.85M | 558.10M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.