Institutional Ownership
Insmed Inc
CUSIP 457669307COM PAR $.01INSMQ1 2026
13D / 13G Filings
47
Schedule 13D/13G on record
Beneficial Filers
13
Distinct reporting persons
Largest Stake
15.0%
Max % of class reported
Institutional Holders
657
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
47 filings · latest Jan 21, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 21, 2026 | Blackrock, Inc. | 13G/A | 6.6% | 14.12M | SEC |
| 2 | Nov 14, 2025 | Darwin Global Management, Ltd. | 13G/A | 9.7% | 20.46M | SEC |
| 3 | Nov 14, 2025 | T. Rowe Price Associates, Inc. | 13G/A | 3.3% | 6.93M | SEC |
| 4 | Aug 14, 2025 | T. Rowe Price Associates, Inc. | 13G/A | 5.9% | 11.23M | SEC |
| 5 | Jul 30, 2025 | Jpmorgan Chase &Amp; Co. | 13G | 7.9% | 15.16M | SEC |
| 6 | Jul 17, 2025 | Blackrock, Inc. | 13G/A | 5.1% | 9.73M | SEC |
| 7 | May 15, 2025 | Darwin Global Management, Ltd. | 13G/A | 8.5% | 15.40M | SEC |
| 8 | Feb 14, 2025 | Darwin Global Management, Ltd. | 13G/A | 7.2% | 12.96M | SEC |
| 9 | Jan 8, 2025 | The Vanguard Group | 13G/A | 10.2% | 18.22M | SEC |
| 10 | Nov 14, 2024 | Price T Rowe Associates Inc /Md/ | 13G/A | 7.3% | 12.58M | SEC |
37 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Insmed Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Jpmorgan Chase & Co | 24.15M | $3.70B |
| 2 | Blackrock, Inc. | 16.68M | $2.73B |
| 3 | Darwin Global Management, Ltd. | 16.81M | $2.58B |
| 4 | Fmr LLC | 13.16M | $2.15B |
| 5 | Baker Bros. Advisors LP | 7.42M | $1.21B |
| 6 | Artisan Partners Limited Partnership | 6.53M | $1.07B |
| 7 | D. E. Shaw & Co., Inc. | 5.63M | $919.93M |
| 8 | Capital International Investors | 5.60M | $914.89M |
| 9 | State Street Corp | 5.55M | $907.81M |
| 10 | Rtw Investments, LP | 4.84M | $791.91M |