BRIDGEWATER, NJ
INSMED INCINSM— Latest position per institution from SEC 13F filings
15
Institutional holders
170.62M
Total shares held
18.34B
Estimated value
8.53M
Avg. position size
VANGUARD GROUP INC
CIK 102909
Shares
21.08M
Value
3.67B
Filed
Dec 31, 2025
FMR LLC
CIK 315066
Shares
16.14M
Value
1.72B
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
15.81M
Value
1.69B
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
14.26M
Value
955.72M
Filed
Jun 30, 2024
JPMORGAN CHASE & CO
CIK 19617
Shares
10.43M
Value
1.09B
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
10.41M
Value
1.11B
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
9.79M
Value
1.04B
Filed
Jun 30, 2026
BAKER BROS. ADVISORS LP
CIK 1263508
Shares
8.80M
Value
937.84M
Filed
Jun 30, 2026
CAPITAL INTERNATIONAL INVESTORS
CIK 1562230
Shares
8.24M
Value
878.34M
Filed
Jun 30, 2026
DARWIN GLOBAL MANAGEMENT, LTD.
CIK 1839209
Shares
6.43M
Value
673.60M
Filed
Jun 30, 2026
AMERIPRISE FINANCIAL INC
CIK 820027
Shares
6.18M
Value
658.88M
Filed
Jun 30, 2026
ORBIS ALLAN GRAY LTD
CIK 1663865
Shares
6.08M
Value
647.88M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
6.05M
Value
645.28M
Filed
Jun 30, 2026
D. E. SHAW & CO., INC.
CIK 1009207
Shares
5.94M
Value
633.12M
Filed
Jun 30, 2026
ARTISAN PARTNERS LIMITED PARTNERSHIP
CIK 1466153
Shares
5.44M
Value
580.20M
Filed
Jun 30, 2026
RTW INVESTMENTS, LP
CIK 1493215
Shares
4.84M
Value
516.35M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
4.22M
Value
448.76M
Filed
Jun 30, 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
3.41M
Value
363.07K
Filed
Jun 30, 2026
NORGES BANK
CIK 1374170
Shares
3.38M
Value
360.12M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | 102909 | 21.08M | 3.67B | Dec 31, 2025 |
| 2 | FMR LLC | 315066 | 16.14M | 1.72B | Jun 30, 2026 |
| 3 | BLACKROCK, INC. | 2012383 | 15.81M | 1.69B | Jun 30, 2026 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 14.26M | 955.72M | Jun 30, 2024 |
| 5 | JPMORGAN CHASE & CO | 19617 | 10.43M | 1.09B | Jun 30, 2026 |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 10.41M | 1.11B | Jun 30, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 9.79M | 1.04B | Jun 30, 2026 |
| 8 | BAKER BROS. ADVISORS LP | 1263508 | 8.80M | 937.84M | Jun 30, 2026 |
| 9 | CAPITAL INTERNATIONAL INVESTORS | 1562230 | 8.24M | 878.34M | Jun 30, 2026 |
| 10 | DARWIN GLOBAL MANAGEMENT, LTD. | 1839209 | 6.43M | 673.60M | Jun 30, 2026 |
| 11 | AMERIPRISE FINANCIAL INC | 820027 | 6.18M | 658.88M | Jun 30, 2026 |
| 12 | ORBIS ALLAN GRAY LTD | 1663865 | 6.08M | 647.88M | Jun 30, 2026 |
| 13 | STATE STREET CORP | 93751 | 6.05M | 645.28M | Jun 30, 2026 |
| 14 | D. E. SHAW & CO., INC. | 1009207 | 5.94M | 633.12M | Jun 30, 2026 |
| 15 | ARTISAN PARTNERS LIMITED PARTNERSHIP | 1466153 | 5.44M | 580.20M | Jun 30, 2026 |
| 16 | RTW INVESTMENTS, LP | 1493215 | 4.84M | 516.35M | Jun 30, 2026 |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 4.22M | 448.76M | Jun 30, 2026 |
| 18 | PICTET ASSET MANAGEMENT SA | 1361570 | 3.70M | 77.99M | Jun 30, 2023 |
| 19 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 3.41M | 363.07K | Jun 30, 2026 |
| 20 | NORGES BANK | 1374170 | 3.38M | 360.12M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.