BRIDGEWATER, NJ
INSMED INCINSM— Latest position per institution from SEC 13F filings
15
Institutional holders
180.60M
Total shares held
27.45B
Estimated value
9.03M
Avg. position size
JPMORGAN CHASE & CO
CIK 19617
Shares
23.20M
Value
4.04B
Filed
Dec 31, 2025
VANGUARD GROUP INC
CIK 102909
Shares
21.08M
Value
3.67B
Filed
Dec 31, 2025
DARWIN GLOBAL MANAGEMENT, LTD.
CIK 1839209
Shares
16.81M
Value
2.58B
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
16.68M
Value
2.73B
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
14.26M
Value
955.72M
Filed
Jun 30, 2024
FMR LLC
CIK 315066
Shares
13.16M
Value
2.15B
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
10.37M
Value
1.70B
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
9.64M
Value
1.58B
Filed
Mar 31, 2026
BAKER BROS. ADVISORS LP
CIK 1263508
Shares
7.42M
Value
1.21B
Filed
Mar 31, 2026
ARTISAN PARTNERS LIMITED PARTNERSHIP
CIK 1466153
Shares
6.53M
Value
1.07B
Filed
Mar 31, 2026
D. E. SHAW & CO., INC.
CIK 1009207
Shares
5.64M
Value
922.70M
Filed
Mar 31, 2026
CAPITAL INTERNATIONAL INVESTORS
CIK 1562230
Shares
5.60M
Value
914.89M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
5.55M
Value
907.81M
Filed
Mar 31, 2026
RTW INVESTMENTS, LP
CIK 1493215
Shares
4.84M
Value
791.91M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
4.45M
Value
733.32M
Filed
Mar 31, 2026
PICTET ASSET MANAGEMENT SA
CIK 1361570
Shares
3.70M
Value
77.99M
Filed
Jun 30, 2023
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
3.09M
Value
505.74K
Filed
Mar 31, 2026
AMERIPRISE FINANCIAL INC
CIK 820027
Shares
3.06M
Value
500M
Filed
Mar 31, 2026
NORGES BANK
CIK 1374170
Shares
2.91M
Value
506.63M
Filed
Dec 31, 2025
FRANKLIN RESOURCES INC
CIK 38777
Shares
2.62M
Value
427.97M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | JPMORGAN CHASE & CO | 19617 | 23.20M | 4.04B | Dec 31, 2025 |
| 2 | VANGUARD GROUP INC | 102909 | 21.08M | 3.67B | Dec 31, 2025 |
| 3 | DARWIN GLOBAL MANAGEMENT, LTD. | 1839209 | 16.81M | 2.58B | Mar 31, 2026 |
| 4 | BLACKROCK, INC. | 2012383 | 16.68M | 2.73B | Mar 31, 2026 |
| 5 | BLACKROCK FINANCE, INC. | 1364742 | 14.26M | 955.72M | Jun 30, 2024 |
| 6 | FMR LLC | 315066 | 13.16M | 2.15B | Mar 31, 2026 |
| 7 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 10.37M | 1.70B | Mar 31, 2026 |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 9.64M | 1.58B | Mar 31, 2026 |
| 9 | BAKER BROS. ADVISORS LP | 1263508 | 7.42M | 1.21B | Mar 31, 2026 |
| 10 | ARTISAN PARTNERS LIMITED PARTNERSHIP | 1466153 | 6.53M | 1.07B | Mar 31, 2026 |
| 11 | D. E. SHAW & CO., INC. | 1009207 | 5.64M | 922.70M | Mar 31, 2026 |
| 12 | CAPITAL INTERNATIONAL INVESTORS | 1562230 | 5.60M | 914.89M | Mar 31, 2026 |
| 13 | STATE STREET CORP | 93751 | 5.55M | 907.81M | Mar 31, 2026 |
| 14 | RTW INVESTMENTS, LP | 1493215 | 4.84M | 791.91M | Mar 31, 2026 |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 4.45M | 733.32M | Mar 31, 2026 |
| 16 | PICTET ASSET MANAGEMENT SA | 1361570 | 3.70M | 77.99M | Jun 30, 2023 |
| 17 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 3.09M | 505.74K | Mar 31, 2026 |
| 18 | AMERIPRISE FINANCIAL INC | 820027 | 3.06M | 500M | Mar 31, 2026 |
| 19 | NORGES BANK | 1374170 | 2.91M | 506.63M | Dec 31, 2025 |
| 20 | FRANKLIN RESOURCES INC | 38777 | 2.62M | 427.97M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.