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, Q4 2025
Institutional positions in INSMED Inc as of Dec 31, 2025. 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
- 678
- +121 vs. Q3 2025
- Shares held
- 217.4M
- +6.76M (+3.2%) vs. Q3 2025
- Total value
- $37.8B
- +$7.55B (+24.9%) vs. Q3 2025
- New holders
- 202
- 241 more added
- Sold out
- 81
- 180 more reduced
9 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding INSMED Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Walleye Capital LLC | 15,820 | $2.75M | 0.02% | +8,890+128.3% | Added |
| Allstate Corp | 15,870 | $2.76M | 0.04% | +15,870 | New |
| Verition Fund Management LLC | 16,043 | $2.79M | 0.02% | −12,109−43.0% | Reduced |
| Tobam | 16,308 | $2.84M | 0.70% | −2,789−14.6% | Reduced |
| Amalgamated Bank | 16,743 | $2.91M | 0.02% | +2,210+15.2% | Added |
| Rockefeller Capital Management L.P. | 16,775 | $2.92M | 0.01% | +7,863+88.2% | Added |
| Harvest Fund Management Co., Ltd | 17,291 | $3.01M | 0.11% | +14,454+509.5% | Added |
| Nisa Investment Advisors, LLC | 17,542 | $3.05M | 0.01% | +7,076+67.6% | Added |
| Walleye Trading LLC | 17,657 | $3.07M | 0.05% | −3,428−16.3% | Reduced |
| CIBC World Markets Corp | 17,694 | $3.08M | 0.02% | +17,694 | New |
| Avidity Partners Management LP | 17,700 | $3.08M | 0.89% | +6,100+52.6% | Added |
| Cinctive Capital Management LP | 17,945 | $3.12M | 0.18% | −48,236−72.9% | Reduced |
| Public Employees Retirement Association of Colorado | 19,020 | $3.31M | 0.01% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 19,276 | $3.35M | 0.00% | −3,472−15.3% | Reduced |
| Cerity Partners LLC | 19,399 | $3.38M | 0.00% | −1,962−9.2% | Reduced |
| Quantinno Capital Management LP | 19,541 | $3.40M | 0.01% | +6,763+52.9% | Added |
| Silvant Capital Management LLC | 19,584 | $3.41M | 0.12% | +19,584 | New |
| Baird Financial Group, Inc. | 19,684 | $3.43M | 0.01% | −2,702−12.1% | Reduced |
| Brown Advisory Inc | 19,989 | $3.48M | 0.00% | −6,120−23.4% | Reduced |
| Nordea Investment Management AB | 20,008 | $3.49M | 0.00% | +20,008 | New |
| Next Century Growth Investors LLC | 20,301 | $3.53M | 0.25% | +4,452+28.1% | Added |
| Atria Investments LLC | 20,385 | $3.55M | 0.04% | −1,028−4.8% | Reduced |
| SBI Okasan Asset Management Co.Ltd. | 20,200 | $3.56M | 0.20% | +20,200 | New |
| Storebrand Asset Management AS | 20,627 | $3.59M | 0.01% | +20,627 | New |
| Rakuten Investment Management, Inc. | 20,466 | $3.61M | 0.01% | +20,466 | New |
| CI Private Wealth, LLC | 20,865 | $3.63M | 0.00% | +5,305+34.1% | Added |
| Canada Pension Plan Investment Board | 21,000 | $3.65M | 0.00% | −41,013−66.1% | Reduced |
| ASR Vermogensbeheer N.V. | 21,108 | $3.67M | 0.04% | +21,108 | New |
| Toroso Investments, LLC | 21,310 | $3.71M | 0.02% | +10,512+97.4% | Added |
| Sanctuary Advisors, LLC | 21,336 | $3.71M | 0.02% | +1,802+9.2% | Added |
| Mackenzie Financial Corp | 21,620 | $3.76M | 0.00% | +4,801+28.5% | Added |
| Gotham Asset Management, LLC | 21,762 | $3.79M | 0.01% | +20,113+1,219.7% | Added |
| EFG International AG | 21,869 | $3.81M | 0.07% | +21,869 | New |
| Campbell & CO Investment Adviser LLC | 21,910 | $3.81M | 0.18% | +2,850+15.0% | Added |
| O'Shaughnessy Asset Management, LLC | 21,929 | $3.82M | 0.02% | +8,703+65.8% | Added |
| PEAK6 LLC | 22,190 | $3.86M | 0.11% | +22,190 | New |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 22,303 | $3.88M | 0.03% | +22,303 | New |
| Shelton Capital Management | 24,319 | $4.23M | 0.08% | +24,319 | New |
| OrbiMed Advisors LLC | 25,400 | $4.42M | 0.09% | +11,941+88.7% | Added |
| Acuta Capital Partners, LLC | 25,878 | $4.50M | 3.06% | −12,714−32.9% | Reduced |
| Renaissance Technologies LLC | 25,900 | $4.51M | 0.01% | −326,987−92.7% | Reduced |
| SummitTX Capital, L.P. | 25,967 | $4.52M | 0.14% | +17,167+195.1% | Added |
| McRae Capital Management Inc | 26,675 | $4.64M | 0.95% | −520−1.9% | Reduced |
| iA Global Asset Management Inc. | 26,682 | $4.64M | 0.06% | +26,516+15,973.5% | Added |
| Pathstone Holdings, LLC | 26,954 | $4.69M | 0.02% | −4,667−14.8% | Reduced |
| Atomi Financial Group, Inc. | 27,651 | $4.81M | 0.14% | +3,912+16.5% | Added |
| Profund Advisors LLC | 27,844 | $4.85M | 0.15% | +16,471+144.8% | Added |
| HealthInvest Partners AB | 27,873 | $4.85M | 1.55% | +27,873 | New |
| KVP Capital Advisors, LP | 28,497 | $4.96M | 5.12% | +28,497 | New |
| GordonMD Global Investments LP | 28,587 | $4.98M | 3.57% | +28,587 | New |
| Caisse de Depot Et Placement du Quebec | 29,500 | $5.13M | 0.01% | −134,900−82.1% | Reduced |
| PensionDanmark Pensionsforsikringsaktieselskab | 30,295 | $5.27M | 0.05% | +30,295 | New |
| Nomura Holdings Inc | 30,485 | $5.31M | 0.02% | +30,485 | New |
| BI Asset Management Fondsmaeglerselskab A/S | 30,527 | $5.31M | 0.05% | −6,897−18.4% | Reduced |
| Utah Retirement Systems | 32,001 | $5.57M | 0.05% | +1,272+4.1% | Added |
| Kennedy Capital Management, Inc. | 32,049 | $5.58M | 0.12% | +1,695+5.6% | Added |
| Calamos Advisors LLC | 32,155 | $5.60M | 0.02% | −3,060−8.7% | Reduced |
| Teacher Retirement System of Texas | 33,219 | $5.78M | 0.02% | −13,418−28.8% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 33,773 | $5.88M | 0.01% | +33,773 | New |
| KBC Group NV | 34,013 | $5.92M | 0.01% | +24,396+253.7% | Added |
| MML Investors Services, LLC | 34,190 | $5.95M | 0.01% | −6,810−16.6% | Reduced |
| Mariner, LLC | 35,272 | $6.14M | 0.01% | +6,403+22.2% | Added |
| Nwam LLC | 38,982 | $6.23M | 0.35% | −10,556−21.3% | Reduced |
| Freestone Grove Partners LP | 36,200 | $6.30M | 0.05% | +36,200 | New |
| Andra AP-fonden | 36,300 | $6.32M | 0.08% | +36,300 | New |
| Toronto Dominion Bank | 36,306 | $6.32M | 0.01% | +36,306 | New |
| Brinker Capital Investments, LLC | 36,586 | $6.37M | 0.05% | −107−0.3% | Reduced |
| Simplify Asset Management Inc. | 36,890 | $6.42M | 0.11% | +17,226+87.6% | Added |
| Natixis Advisors, L.P. | 37,168 | $6.47M | 0.01% | −2,282−5.8% | Reduced |
| British Columbia Investment Management Corp | 37,507 | $6.53M | 0.03% | +37,507 | New |
| Thornburg Investment Management Inc | 37,971 | $6.61M | 0.08% | −6,077−13.8% | Reduced |
| Bamco Inc | 38,200 | $6.65M | 0.02% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 38,251 | $6.66M | 0.02% | +34,648+961.6% | Added |
| Cetera Investment Advisers | 38,443 | $6.69M | 0.01% | −2,728−6.6% | Reduced |
| HighVista Strategies LLC | 39,400 | $6.86M | 1.77% | −10,549−21.1% | Reduced |
| Assetmark, Inc | 39,732 | $6.91M | 0.01% | +4,438+12.6% | Added |
| Legato Capital Management LLC | 40,006 | $6.96M | 0.60% | +5,174+14.9% | Added |
| IFM Investors Pty Ltd | 40,165 | $6.99M | 0.06% | +40,165 | New |
| DnB Asset Management AS | 40,918 | $7.12M | 0.02% | +37,522+1,104.9% | Added |
| GF Fund Management Co. Ltd. | 42,227 | $7.35M | 0.13% | +37,679+828.5% | Added |
| China Universal Asset Management Co., Ltd. | 42,388 | $7.38M | 0.57% | +5,337+14.4% | Added |
| Allianz Asset Management GmbH | 42,607 | $7.42M | 0.01% | −23,476−35.5% | Reduced |
| Xponance, Inc. | 43,042 | $7.49M | 0.06% | +16,624+62.9% | Added |
| Twinbeech Capital LP | 44,009 | $7.66M | 0.54% | +44,009 | New |
| Forsta Ap-Fonden | 45,100 | $7.85M | 0.05% | +45,100 | New |
| NEOS Investment Management LLC | 47,957 | $8.35M | 0.05% | +43,660+1,016.1% | Added |
| PFA Pension, Forsikringsaktieselskab | 48,330 | $8.41M | 0.02% | +48,330 | New |
| CIBC Asset Management Inc | 48,463 | $8.43M | 0.02% | +43,686+914.5% | Added |
| Soleus Capital Management, L.P. | 48,500 | $8.44M | 0.36% | +45,950+1,802.0% | Added |
| Mutual of America Capital Management LLC | 49,080 | $8.54M | 0.09% | −20,674−29.6% | Reduced |
| Monashee Investment Management LLC | 50,000 | $8.70M | 4.90% | +50,000 | New |
| Defilade Capital Management, L.P. | 50,000 | $8.70M | 1.18% | +50,000 | New |
| Erste Asset Management GmbH | 49,603 | $8.75M | 0.07% | +2,003+4.2% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 50,500 | $8.79M | 0.07% | +50,500 | New |
| OP Asset Management Ltd | 50,549 | $8.80M | 0.11% | +50,549 | New |
| Parnassus Investments | 51,643 | $8.99M | 0.02% | +42,916+491.8% | Added |
| STRS Ohio | 52,016 | $9.05M | 0.03% | +22,562+76.6% | Added |
| Great West Life Assurance Co | 54,047 | $9.41M | 0.02% | +7,005+14.9% | Added |
| Engineers Gate Manager LP | 54,783 | $9.53M | 0.11% | +42,315+339.4% | Added |
| Picton Mahoney Asset Management | 57,259 | $9.97M | 0.11% | +5,656+11.0% | Added |