Insmed Ownership | Who Owns Insmed?
Insmed Ownership Summary
Insmed is owned by 103.37% institutional investors, 1.21% insiders. Vanguard group is the largest institutional shareholder, holding 10.49% of INSM shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.12% of its assets in Insmed shares.
INSM Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Insmed | 103.37% | 1.21% | -4.58% |
| Sector | Healthcare Stocks | 57.39% | 9.93% | 32.68% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 18.22M | 10.49% | $1.26B |
| Blackrock | 14.26M | 9.61% | $955.72M |
| Blackrock funding, inc. /de | 16.03M | 9.23% | $1.11B |
| Darwin global management | 12.96M | 7.46% | $894.80M |
| Price t rowe associates inc /md/ | 12.70M | 7.31% | $877.11M |
| Capital investors | 7.12M | 4.10% | $491.36M |
| State street | 4.66M | 3.14% | $312.38M |
| Baker bros. advisors lp | 5.01M | 2.88% | $345.67M |
| Fmr | 4.86M | 2.80% | $335.28M |
| Rtw investments, lp | 3.64M | 2.45% | $243.89M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Darwin global management | 12.96M | 84.75% | $894.80M |
| Sio capital management | 1.36M | 24.71% | $91.30M |
| Palo alto investors lp | 1.60M | 17.15% | $110.70M |
| Lion point capital, lp | 36.70K | 13.27% | $2.53M |
| Eagle health investments lp | 513.70K | 8.69% | $35.47M |
| Acuta capital partners | 104.80K | 7.28% | $7.24M |
| Ally bridge group (ny) | 114.36K | 6.77% | $7.90M |
| Cutter capital management, lp | 210.88K | 5.97% | $14.56M |
| Silverarc capital management | 372.23K | 5.62% | $25.70M |
| First turn management | 446.98K | 5.53% | $30.86M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | 14.26M | 0.02% | 2.46M |
| Darwin global management | 12.96M | 84.75% | 2.46M |
| Norges bank | 1.83M | 0.02% | 1.83M |
| Rtw investments, lp | 3.64M | 3.78% | 1.77M |
| Vanguard group | 18.22M | 0.02% | 1.08M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 4.86M | 0.02% | -2.34M |
| Deep track capital, lp | - | - | -2.00M |
| State street | 4.66M | 0.01% | -1.24M |
| Eversept partners, lp | - | - | -1.09M |
| Viking global investors lp | - | - | -1.04M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 1.83M | 0.02% | 1.83M | $126.61M |
| Kynam capital management, lp | 1.00M | 5.17% | 1.00M | $67.00M |
| Holocene advisors, lp | 687.71K | 0.15% | 687.71K | $47.48M |
| Brown advisory | 663.00K | 0.06% | 663.00K | $45.77M |
| Logos global management lp | 450.00K | 3.64% | 450.00K | $31.07M |
Sold Out
| Holder | Change |
|---|---|
| Riverview trust | -6.00 |
| Fortitude family office | -7.00 |
| Capital performance advisors llp | -23.00 |
| International assets investment management | -52.00 |
| Stephens consulting | -70.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2024 | 441 | -2.86% | 179,579,885 | -3.86% | 103 | 0.89% | 220 | -15.38% | 144 | 25.22% |
| Sep 30, 2024 | 451 | 3.68% | 186,766,280 | 6.62% | 107 | 0.77% | 258 | -4.80% | 115 | 18.56% |
| Jun 30, 2024 | 435 | 32.62% | 175,177,026 | 18.19% | 117 | 1.18% | 271 | 83.11% | 97 | - |
| Mar 31, 2024 | 328 | 12.71% | 148,210,705 | -0.87% | 99 | 0.88% | 148 | 4.96% | 97 | 4.30% |
| Dec 31, 2023 | 291 | 10.23% | 149,510,430 | 2.42% | 106 | 1.02% | 141 | 2.17% | 93 | 24.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 5.64M | 3.12% | 3.26K |
| Vanguard US Total Market Shares ETF | 5.46M | 3.00% | 368.94K |
| US Small-Cap Growth II Equity Comp | 4.75M | 2.66% | -19.40K |
| T. Rowe Price New Horizons | 4.67M | 2.57% | -23.00K |
| Vanguard Small Cap Index | 4.57M | 2.52% | 3.72K |
| American Funds Growth Fund of Amer A | 4.48M | 2.50% | 559.29K |
| Capital Group Growth Fnd of Amer Comp | 4.48M | 2.50% | 559.29K |
| iShares Russell 2000 ETF | 4.53M | 2.49% | -39.27K |
| Vanguard Institutional Extnd Mkt Idx Tr | 2.72M | 1.50% | 3.74K |
| T. Rowe Price Health Sciences | 2.61M | 1.44% | -64.80K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Apr 01, 2025 | Lewis William | Chair and CEO | Sell | $166.91K |
| Apr 01, 2025 | Lewis William | Chair and CEO | Sell | $60.58K |
| Apr 01, 2025 | Lewis William | Chair and CEO | Sell | $218.39K |
| Apr 01, 2025 | Lewis William | Chair and CEO | Sell | $56.70K |
| Mar 17, 2025 | Lewis William | Chair and CEO | Sell | $153.75K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q2 | - | 4 |
| 2025 Q1 | - | 87 |
| 2024 Q4 | - | 10 |
| 2024 Q3 | - | 12 |
| 2024 Q2 | - | 19 |
INSM Ownership FAQ
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