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 |
|---|---|---|---|---|---|
| O'Shaughnessy Asset Management, LLC | 16,050 | $2.62M | 0.01% | −5,879−26.8% | Reduced |
| Gulf International Bank (UK) Ltd | 16,545 | $2.71M | 0.06% | +5,512+50.0% | Added |
| SBI Okasan Asset Management Co.Ltd. | 18,000 | $2.76M | 0.11% | −2,200−10.9% | Reduced |
| Baird Financial Group, Inc. | 17,688 | $2.89M | 0.00% | −1,996−10.1% | Reduced |
| Fifth Third Bancorp | 18,200 | $2.98M | 0.01% | +17,842+4,983.8% | Added |
| Eurizon Capital SGR S.p.A. | 18,473 | $3.00M | 0.01% | +4,504+32.2% | Added |
| Wealthfront Advisers LLC | 18,404 | $3.01M | 0.01% | +8,413+84.2% | Added |
| Swiss Life Asset Management Ltd | 18,506 | $3.03M | 0.01% | +4,502+32.1% | Added |
| Advisor Group Holdings, Inc. | 18,657 | $3.05M | 0.00% | −619−3.2% | Reduced |
| Public Employees Retirement Association of Colorado | 19,020 | $3.11M | 0.01% | 00.0% | Unchanged |
| Nomura Holdings Inc | 19,045 | $3.11M | 0.03% | −11,440−37.5% | Reduced |
| Silvant Capital Management LLC | 19,905 | $3.25M | 0.11% | +321+1.6% | Added |
| Bamco Inc | 20,000 | $3.27M | 0.01% | −18,200−47.6% | Reduced |
| Renaissance Technologies LLC | 20,300 | $3.32M | 0.01% | −5,600−21.6% | Reduced |
| Sectoral Asset Management Inc | 19,668 | $3.38M | 2.80% | +8,486+75.9% | Added |
| Robeco Institutional Asset Management B.V. | 20,774 | $3.40M | 0.00% | +19,102+1,142.5% | Added |
| Cerity Partners LLC | 21,484 | $3.51M | 0.00% | +2,085+10.7% | Added |
| ASR Vermogensbeheer N.V. | 21,496 | $3.51M | 0.04% | +388+1.8% | Added |
| Nordea Investment Management AB | 22,247 | $3.55M | 0.00% | +2,239+11.2% | Added |
| Atria Investments LLC | 21,845 | $3.57M | 0.04% | +1,460+7.2% | Added |
| Mariner, LLC | 22,072 | $3.61M | 0.00% | −13,200−37.4% | Reduced |
| OP Asset Management Ltd | 22,222 | $3.63M | 0.04% | −28,327−56.0% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 22,303 | $3.65M | 0.03% | 00.0% | Unchanged |
| Tobam | 22,312 | $3.65M | 0.95% | +6,004+36.8% | Added |
| Brown Advisory Inc | 22,949 | $3.75M | 0.01% | +2,960+14.8% | Added |
| SummitTX Capital, L.P. | 23,153 | $3.79M | 0.12% | −2,814−10.8% | Reduced |
| Mackenzie Financial Corp | 23,771 | $3.89M | 0.00% | +2,151+9.9% | Added |
| Allstate Corp | 23,888 | $3.91M | 0.04% | +8,018+50.5% | Added |
| Sanctuary Advisors, LLC | 23,969 | $3.92M | 0.02% | +2,633+12.3% | Added |
| Elo Mutual Pension Insurance Co | 24,125 | $3.94M | 0.07% | +11,716+94.4% | Added |
| Shelton Capital Management | 24,217 | $3.96M | 0.09% | −102−0.4% | Reduced |
| HighVista Strategies LLC | 24,316 | $3.98M | 1.10% | −15,084−38.3% | Reduced |
| MML Investors Services, LLC | 24,773 | $4.05M | 0.01% | −9,417−27.5% | Reduced |
| Next Century Growth Investors LLC | 26,167 | $4.28M | 0.31% | +5,866+28.9% | Added |
| Exome Asset Management LLC | 26,651 | $4.36M | 2.56% | +26,651 | New |
| Pathstone Holdings, LLC | 27,249 | $4.46M | 0.02% | +295+1.1% | Added |
| Atomi Financial Group, Inc. | 27,862 | $4.56M | 0.14% | +211+0.8% | Added |
| Profund Advisors LLC | 27,937 | $4.57M | 0.17% | +93+0.3% | Added |
| KVP Capital Advisors, LP | 28,497 | $4.66M | 3.48% | 00.0% | Unchanged |
| GordonMD Global Investments LP | 28,587 | $4.67M | 3.85% | 00.0% | Unchanged |
| Toronto Dominion Bank | 28,871 | $4.72M | 0.01% | −7,435−20.5% | Reduced |
| 1832 Asset Management L.P. | 28,900 | $4.73M | 0.01% | +28,900 | New |
| PensionDanmark Pensionsforsikringsaktieselskab | 29,055 | $4.75M | 0.05% | −1,240−4.1% | Reduced |
| British Columbia Investment Management Corp | 29,398 | $4.81M | 0.03% | −8,109−21.6% | Reduced |
| CI Private Wealth, LLC | 30,249 | $4.95M | 0.01% | +9,384+45.0% | Added |
| Teacher Retirement System of Texas | 30,382 | $4.97M | 0.02% | −2,837−8.5% | Reduced |
| Voloridge Investment Management, LLC | 32,190 | $5.26M | 0.02% | +32,190 | New |
| Utah Retirement Systems | 34,031 | $5.56M | 0.06% | +2,030+6.3% | Added |
| Assetmark, Inc | 34,258 | $5.60M | 0.01% | −5,474−13.8% | Reduced |
| Cetera Investment Advisers | 34,356 | $5.62M | 0.01% | −4,087−10.6% | Reduced |
| Kennedy Capital Management, Inc. | 34,526 | $5.65M | 0.12% | +2,477+7.7% | Added |
| Brinker Capital Investments, LLC | 34,641 | $5.66M | 0.05% | −1,945−5.3% | Reduced |
| iA Global Asset Management Inc. | 34,977 | $5.72M | 0.08% | +8,295+31.1% | Added |
| McRae Capital Management Inc | 35,145 | $5.75M | 1.19% | +8,470+31.8% | Added |
| CenterBook Partners LP | 35,232 | $5.76M | 0.31% | +35,232 | New |
| ADAR1 Capital Management, LLC | 35,392 | $5.79M | 0.35% | +35,392 | New |
| Korea Investment CORP | 35,429 | $5.79M | 0.01% | −37,200−51.2% | Reduced |
| Quantinno Capital Management LP | 35,552 | $5.81M | 0.01% | +16,011+81.9% | Added |
| Silverarc Capital Management, LLC | 35,850 | $5.86M | 0.69% | −35,406−49.7% | Reduced |
| Calamos Advisors LLC | 36,373 | $5.95M | 0.02% | +4,218+13.1% | Added |
| HealthInvest Partners AB | 97,438 | $5.96M | 1.92% | +69,565+249.6% | Added |
| Jones Financial Companies LLLP | 41,406 | $6.02M | 0.00% | +40,854+7,401.1% | Added |
| Mutual of America Capital Management LLC | 36,881 | $6.03M | 0.07% | −12,199−24.9% | Reduced |
| KBC Group NV | 37,347 | $6.11M | 0.02% | +3,334+9.8% | Added |
| Thornburg Investment Management Inc | 38,337 | $6.27M | 0.07% | +366+1.0% | Added |
| Erste Asset Management GmbH | 41,603 | $6.38M | 0.06% | −8,000−16.1% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 39,243 | $6.42M | 0.06% | +34,510+729.1% | Added |
| Squarepoint Ops LLC | 39,316 | $6.43M | 0.01% | −27,086−40.8% | Reduced |
| Daiwa Securities Group Inc. | 39,429 | $6.45M | 0.02% | +1,178+3.1% | Added |
| Legato Capital Management LLC | 39,554 | $6.47M | 0.59% | −452−1.1% | Reduced |
| Canada Pension Plan Investment Board | 39,900 | $6.52M | 0.00% | +18,900+90.0% | Added |
| EFG International AG | 40,542 | $6.63M | 0.14% | +18,673+85.4% | Added |
| IFM Investors Pty Ltd | 42,740 | $6.99M | 0.06% | +2,575+6.4% | Added |
| Natixis Advisors, L.P. | 42,934 | $7.02M | 0.01% | +5,766+15.5% | Added |
| Rakuten Investment Management, Inc. | 43,849 | $7.19M | 0.01% | +23,383+114.3% | Added |
| Nwam LLC | 44,883 | $7.34M | 0.42% | +5,901+15.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 46,230 | $7.56M | 0.02% | +46,230 | New |
| China Universal Asset Management Co., Ltd. | 47,015 | $7.69M | 0.58% | +4,627+10.9% | Added |
| Xponance, Inc. | 47,852 | $7.82M | 0.06% | +4,810+11.2% | Added |
| Alyeska Investment Group, L.P. | 48,122 | $7.87M | 0.02% | −11,878−19.8% | Reduced |
| CIBC Asset Management Inc | 48,193 | $7.88M | 0.02% | −270−0.6% | Reduced |
| GF Fund Management Co. Ltd. | 48,496 | $7.93M | 0.13% | +6,269+14.8% | Added |
| Simon Quick Advisors, LLC | 50,065 | $8.19M | 0.37% | +50,065 | New |
| DekaBank Deutsche Girozentrale | 50,000 | $8.19M | 0.01% | 00.0% | Unchanged |
| Empowered Funds, LLC | 51,986 | $8.50M | 0.05% | +51,986 | New |
| STRS Ohio | 52,009 | $8.50M | 0.03% | −70.0% | Reduced |
| DnB Asset Management AS | 53,170 | $8.69M | 0.03% | +12,252+29.9% | Added |
| Great West Life Assurance Co | 53,890 | $8.84M | 0.02% | −157−0.3% | Reduced |
| Cullen/Frost Bankers, Inc. | 55,578 | $9.09M | 0.10% | +55,322+21,610.2% | Added |
| Schonfeld Strategic Advisors LLC | 56,056 | $9.17M | 0.07% | +56,056 | New |
| Healthcare of Ontario Pension Plan Trust Fund | 56,529 | $9.24M | 0.02% | −8,784−13.4% | Reduced |
| Agf Management Ltd | 57,458 | $9.40M | 0.04% | −1,377−2.3% | Reduced |
| Arizona State Retirement System | 57,951 | $9.48M | 0.06% | +200.0% | Added |
| Toroso Investments, LLC | 61,776 | $9.70M | 0.03% | +40,466+189.9% | Added |
| Nissay Asset Management Corp | 60,043 | $9.82M | 0.05% | +2,378+4.1% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 60,175 | $9.84M | 0.01% | +26,402+78.2% | Added |
| Resona Asset Management Co.,Ltd. | 60,930 | $9.87M | 0.05% | +549+0.9% | Added |
| Public Employees Retirement System of Ohio | 60,951 | $9.97M | 0.03% | −2,076−3.3% | Reduced |
| Bank of Montreal | 62,580 | $10.2M | 0.00% | −220−0.4% | Reduced |
| Essex Investment Management Co LLC | 62,676 | $10.2M | 1.62% | +253+0.4% | Added |