INSMED Inc
INSM- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001104506
In the last 90 days, INSMED Inc insiders filed 0 open-market purchases and 7 sales; 667 institutions reported holding it in 13F filings for Q2 2026, worth $23.8B in total; superinvestors Maverick Capital and Duquesne Family Office hold it.
13F holders, Q1 2026
Institutional positions in INSMED Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 675
- +8 vs. Q4 2025
- Shares held
- 220.9M
- +27.6M (+14.3%) vs. Q4 2025
- Total value
- $35.7B
- +$2.06B (+6.1%) vs. Q4 2025
- New holders
- 101
- 288 more added
- Sold out
- 93
- 216 more reduced
11 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting INSM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 667 | $23.8B |
| Q1 2026 | 675 | $35.7B |
| Q4 2025 | 678 | $37.8B |
| Q3 2025 | 566 | $30.3B |
| Q2 2025 | 516 | $21.2B |
| Q1 2025 | 442 | $15.3B |
| Q4 2024 | 439 | $13.3B |
| Q3 2024 | 414 | $13.7B |
| Q2 2024 | 378 | $11.7B |
| Q1 2024 | 288 | $4.07B |
| Q4 2023 | 271 | $4.64B |
| Q3 2023 | 252 | $3.72B |
| Q2 2023 | 223 | $3.09B |
| Q1 2023 | 230 | $2.48B |
| Q4 2022 | 225 | $2.87B |
| Q3 2022 | 238 | $2.74B |
| Q2 2022 | 214 | $2.55B |
| Q1 2022 | 224 | $2.97B |
| Q4 2021 | 214 | $3.36B |
| Q3 2021 | 193 | $3.40B |
| Q2 2021 | 203 | $3.46B |
| Q1 2021 | 199 | $3.63B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding INSMED Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Voya Investment Management LLC | 243,706 | $39.9M | 0.04% | +42,742+21.3% | Added |
| Axiom Investors LLC | 239,447 | $39.2M | 0.44% | −16,402−6.4% | Reduced |
| Two Sigma Investments, LP | 237,017 | $38.8M | 0.03% | −725,139−75.4% | Reduced |
| Citigroup Inc | 233,304 | $38.1M | 0.02% | −4,610−1.9% | Reduced |
| Evergreen Quality Fund GP, Ltd. | 232,500 | $38.0M | 0.87% | +112,000+92.9% | Added |
| First Trust Advisors LP | 229,563 | $37.5M | 0.03% | −18,377−7.4% | Reduced |
| Eagle Health Investments LP | 224,271 | $36.7M | 7.70% | +13,371+6.3% | Added |
| Balyasny Asset Management LLC | 221,707 | $36.3M | 0.07% | −158,854−41.7% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 207,527 | $33.9M | 0.50% | 00.0% | Unchanged |
| Loomis Sayles & Co L P | 194,982 | $31.9M | 0.04% | −4,973−2.5% | Reduced |
| Defilade Capital Management, L.P. | 194,909 | $31.9M | 4.48% | +144,909+289.8% | Added |
| Cormorant Asset Management, LP | 190,000 | $31.1M | 1.57% | −85,000−30.9% | Reduced |
| Davern Capital Partners, LP | 182,562 | $29.9M | 8.19% | +182,562 | New |
| Nicholas Investment Partners, LP | 182,540 | $29.8M | 2.15% | +2,130+1.2% | Added |
| State Board of Administration of Florida Retirement System | 180,405 | $29.5M | 0.06% | +110+0.1% | Added |
| Tremblant Capital Group | 173,637 | $28.4M | 0.91% | −2,013−1.1% | Reduced |
| Susquehanna International Group, LLP | 173,630 | $28.4M | 0.04% | −14,946−7.9% | Reduced |
| Russell Investments Group, Ltd. | 169,162 | $27.7M | 0.03% | +24,067+16.6% | Added |
| SEB Asset Management AB | 165,576 | $27.1M | 0.12% | +165,576 | New |
| TD Asset Management Inc | 163,424 | $26.7M | 0.02% | −99,054−37.7% | Reduced |
| C WorldWide Group Holding A/S | 161,110 | $26.3M | 0.57% | +25,000+18.4% | Added |
| Rhenman & Partners Asset Management AB | 159,760 | $26.1M | 3.22% | +46,175+40.7% | Added |
| Engineers Gate Manager LP | 158,792 | $26.0M | 0.32% | +104,009+189.9% | Added |
| Patient Square Capital LP | 157,500 | $25.8M | 4.57% | −109,500−41.0% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 152,366 | $24.9M | 0.05% | −9,458−5.8% | Reduced |
| Qube Research & Technologies Ltd | 148,515 | $24.3M | 0.03% | +148,515 | New |
| Woodline Partners LP | 148,453 | $24.3M | 0.09% | +18,301+14.1% | Added |
| ExodusPoint Capital Management, LP | 148,133 | $24.2M | 0.24% | +68,046+85.0% | Added |
| Long Focus Capital Management, LLC | 145,000 | $23.7M | 1.04% | +20,000+16.0% | Added |
| Perpetual Ltd | 142,580 | $23.3M | 0.36% | +1,063+0.8% | Added |
| LPL Financial LLC | 138,281 | $22.6M | 0.01% | +5,497+4.1% | Added |
| SG Americas Securities, LLC | 137,149 | $22.4M | 0.02% | +70,387+105.4% | Added |
| Man Group plc | 126,840 | $20.7M | 0.04% | +8,479+7.2% | Added |
| Fred Alger Management, LLC | 125,766 | $20.6M | 0.09% | +44,455+54.7% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 122,958 | $20.1M | 0.03% | +2,577+2.1% | Added |
| Aviva PLC | 122,074 | $20.0M | 0.03% | +12,673+11.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 120,348 | $19.7M | 0.03% | +17,040+16.5% | Added |
| Schroder Investment Management Group | 119,958 | $19.6M | 0.02% | +52,569+78.0% | Added |
| HSBC Holdings PLC | 116,456 | $19.0M | 0.01% | −6,811−5.5% | Reduced |
| Rafferty Asset Management, LLC | 116,069 | $19.0M | 0.08% | +15,257+15.1% | Added |
| PFA Pension, Forsikringsaktieselskab | 114,788 | $18.8M | 0.06% | +66,458+137.5% | Added |
| State of Wisconsin Investment Board | 114,346 | $18.7M | 0.04% | −17,278−13.1% | Reduced |
| Danske Bank A/S | 111,058 | $18.2M | 0.04% | +800+0.7% | Added |
| NEOS Investment Management LLC | 110,426 | $18.1M | 0.09% | +62,469+130.3% | Added |
| Vanguard Global Advisers, LLC | 109,003 | $17.8M | 0.01% | +109,003 | New |
| Vanguard Investments Australia, Ltd. | 105,805 | $17.3M | 0.05% | +105,805 | New |
| Driehaus Capital Management LLC | 105,414 | $17.2M | 0.13% | −203−0.2% | Reduced |
| National Bank of Canada | 104,758 | $17.1M | 0.02% | −3,948−3.6% | Reduced |
| Van Eck Associates Corp | 104,290 | $17.1M | 0.01% | +15,255+17.1% | Added |
| M&G Plc | 98,221 | $16.1M | 0.08% | +98,221 | New |
| J. Safra Sarasin Holding AG | 93,181 | $15.2M | 0.26% | +86,720+1,342.2% | Added |
| Mirae Asset Global Investments Co., Ltd. | 92,080 | $15.1M | 0.04% | +13,588+17.3% | Added |
| EULAV Asset Management | 92,000 | $15.0M | 0.48% | +11,000+13.6% | Added |
| Storebrand Asset Management AS | 90,826 | $14.9M | 0.04% | +70,199+340.3% | Added |
| Nomura Asset Management Co Ltd | 89,660 | $14.7M | 0.04% | +6,116+7.3% | Added |
| Treasurer of the State of North Carolina | 89,647 | $14.7M | 0.05% | +1,907+2.2% | Added |
| Police & Firemen's Retirement System of New Jersey | 89,630 | $14.7M | 0.13% | +542+0.6% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 84,184 | $13.8M | 0.03% | +1,152+1.4% | Added |
| Swedbank AB | 82,865 | $13.6M | 0.01% | +23,313+39.1% | Added |
| Asset Management One Co.,Ltd. | 82,381 | $13.5M | 0.04% | +1,494+1.8% | Added |
| Guggenheim Capital LLC | 80,021 | $13.1M | 0.10% | −2,270−2.8% | Reduced |
| Andra AP-fonden | 77,970 | $12.7M | 0.16% | +41,670+114.8% | Added |
| Tredje AP-fonden | 76,604 | $12.5M | 0.07% | +76,604 | New |
| Stifel Financial Corp | 75,702 | $12.4M | 0.01% | +6,464+9.3% | Added |
| KLP Kapitalforvaltning AS | 74,000 | $12.1M | 0.05% | 00.0% | Unchanged |
| Cinctive Capital Management LP | 73,063 | $11.9M | 0.79% | +55,118+307.1% | Added |
| State of New Jersey Common Pension Fund D | 72,888 | $11.9M | 0.05% | +759+1.1% | Added |
| Manufacturers Life Insurance Company, The | 72,696 | $11.9M | 0.01% | −46,151−38.8% | Reduced |
| Creative Planning | 72,200 | $11.8M | 0.01% | +1,698+2.4% | Added |
| Walleye Capital LLC | 71,819 | $11.7M | 0.07% | +55,999+354.0% | Added |
| Parnassus Investments | 69,515 | $11.4M | 0.03% | +17,872+34.6% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 68,489 | $11.2M | 0.06% | +68,489 | New |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 68,350 | $11.2M | 0.06% | +17,850+35.3% | Added |
| Handelsbanken Fonder AB | 67,481 | $11.0M | 0.04% | +3,900+6.1% | Added |
| Assenagon Asset Management S.A. | 63,259 | $10.3M | 0.02% | −43,567−40.8% | Reduced |
| Essex Investment Management Co LLC | 62,676 | $10.2M | 1.62% | +253+0.4% | Added |
| Bank of Montreal | 62,580 | $10.2M | 0.00% | −220−0.4% | Reduced |
| Public Employees Retirement System of Ohio | 60,951 | $9.97M | 0.03% | −2,076−3.3% | Reduced |
| Resona Asset Management Co.,Ltd. | 60,930 | $9.87M | 0.05% | +549+0.9% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 60,175 | $9.84M | 0.01% | +26,402+78.2% | Added |
| Nissay Asset Management Corp | 60,043 | $9.82M | 0.05% | +2,378+4.1% | Added |
| Toroso Investments, LLC | 61,776 | $9.70M | 0.03% | +40,466+189.9% | Added |
| Arizona State Retirement System | 57,951 | $9.48M | 0.06% | +200.0% | Added |
| Agf Management Ltd | 57,458 | $9.40M | 0.04% | −1,377−2.3% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 56,529 | $9.24M | 0.02% | −8,784−13.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 56,056 | $9.17M | 0.07% | +56,056 | New |
| Cullen/Frost Bankers, Inc. | 55,578 | $9.09M | 0.10% | +55,322+21,610.2% | Added |
| Great West Life Assurance Co | 53,890 | $8.84M | 0.02% | −157−0.3% | Reduced |
| DnB Asset Management AS | 53,170 | $8.69M | 0.03% | +12,252+29.9% | Added |
| STRS Ohio | 52,009 | $8.50M | 0.03% | −70.0% | Reduced |
| Empowered Funds, LLC | 51,986 | $8.50M | 0.05% | +51,986 | New |
| DekaBank Deutsche Girozentrale | 50,000 | $8.19M | 0.01% | 00.0% | Unchanged |
| Simon Quick Advisors, LLC | 50,065 | $8.19M | 0.37% | +50,065 | New |
| GF Fund Management Co. Ltd. | 48,496 | $7.93M | 0.13% | +6,269+14.8% | Added |
| CIBC Asset Management Inc | 48,193 | $7.88M | 0.02% | −270−0.6% | Reduced |
| Alyeska Investment Group, L.P. | 48,122 | $7.87M | 0.02% | −11,878−19.8% | Reduced |
| Xponance, Inc. | 47,852 | $7.82M | 0.06% | +4,810+11.2% | Added |
| China Universal Asset Management Co., Ltd. | 47,015 | $7.69M | 0.58% | +4,627+10.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 46,230 | $7.56M | 0.02% | +46,230 | New |
| Nwam LLC | 44,883 | $7.34M | 0.42% | +5,901+15.1% | Added |