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 |
|---|---|---|---|---|---|
| Rakuten Investment Management, Inc. | 43,849 | $7.19M | 0.01% | +23,383+114.3% | Added |
| Natixis Advisors, L.P. | 42,934 | $7.02M | 0.01% | +5,766+15.5% | Added |
| IFM Investors Pty Ltd | 42,740 | $6.99M | 0.06% | +2,575+6.4% | Added |
| EFG International AG | 40,542 | $6.63M | 0.14% | +18,673+85.4% | Added |
| Canada Pension Plan Investment Board | 39,900 | $6.52M | 0.00% | +18,900+90.0% | Added |
| Legato Capital Management LLC | 39,554 | $6.47M | 0.59% | −452−1.1% | Reduced |
| Daiwa Securities Group Inc. | 39,429 | $6.45M | 0.02% | +1,178+3.1% | Added |
| Squarepoint Ops LLC | 39,316 | $6.43M | 0.01% | −27,086−40.8% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 39,243 | $6.42M | 0.06% | +34,510+729.1% | Added |
| Erste Asset Management GmbH | 41,603 | $6.38M | 0.06% | −8,000−16.1% | Reduced |
| Thornburg Investment Management Inc | 38,337 | $6.27M | 0.07% | +366+1.0% | Added |
| KBC Group NV | 37,347 | $6.11M | 0.02% | +3,334+9.8% | Added |
| Mutual of America Capital Management LLC | 36,881 | $6.03M | 0.07% | −12,199−24.9% | Reduced |
| Jones Financial Companies LLLP | 41,406 | $6.02M | 0.00% | +40,854+7,401.1% | Added |
| HealthInvest Partners AB | 97,438 | $5.96M | 1.92% | +69,565+249.6% | Added |
| Calamos Advisors LLC | 36,373 | $5.95M | 0.02% | +4,218+13.1% | Added |
| Silverarc Capital Management, LLC | 35,850 | $5.86M | 0.69% | −35,406−49.7% | Reduced |
| Quantinno Capital Management LP | 35,552 | $5.81M | 0.01% | +16,011+81.9% | Added |
| Korea Investment CORP | 35,429 | $5.79M | 0.01% | −37,200−51.2% | Reduced |
| ADAR1 Capital Management, LLC | 35,392 | $5.79M | 0.35% | +35,392 | New |
| CenterBook Partners LP | 35,232 | $5.76M | 0.31% | +35,232 | New |
| McRae Capital Management Inc | 35,145 | $5.75M | 1.19% | +8,470+31.8% | Added |
| iA Global Asset Management Inc. | 34,977 | $5.72M | 0.08% | +8,295+31.1% | Added |
| Brinker Capital Investments, LLC | 34,641 | $5.66M | 0.05% | −1,945−5.3% | Reduced |
| Kennedy Capital Management, Inc. | 34,526 | $5.65M | 0.12% | +2,477+7.7% | Added |
| Cetera Investment Advisers | 34,356 | $5.62M | 0.01% | −4,087−10.6% | Reduced |
| Assetmark, Inc | 34,258 | $5.60M | 0.01% | −5,474−13.8% | Reduced |
| Utah Retirement Systems | 34,031 | $5.56M | 0.06% | +2,030+6.3% | Added |
| Voloridge Investment Management, LLC | 32,190 | $5.26M | 0.02% | +32,190 | New |
| Teacher Retirement System of Texas | 30,382 | $4.97M | 0.02% | −2,837−8.5% | Reduced |
| CI Private Wealth, LLC | 30,249 | $4.95M | 0.01% | +9,384+45.0% | Added |
| British Columbia Investment Management Corp | 29,398 | $4.81M | 0.03% | −8,109−21.6% | Reduced |
| PensionDanmark Pensionsforsikringsaktieselskab | 29,055 | $4.75M | 0.05% | −1,240−4.1% | Reduced |
| 1832 Asset Management L.P. | 28,900 | $4.73M | 0.01% | +28,900 | New |
| Toronto Dominion Bank | 28,871 | $4.72M | 0.01% | −7,435−20.5% | Reduced |
| GordonMD Global Investments LP | 28,587 | $4.67M | 3.85% | 00.0% | Unchanged |
| KVP Capital Advisors, LP | 28,497 | $4.66M | 3.48% | 00.0% | Unchanged |
| Profund Advisors LLC | 27,937 | $4.57M | 0.17% | +93+0.3% | Added |
| Atomi Financial Group, Inc. | 27,862 | $4.56M | 0.14% | +211+0.8% | Added |
| Pathstone Holdings, LLC | 27,249 | $4.46M | 0.02% | +295+1.1% | Added |
| Exome Asset Management LLC | 26,651 | $4.36M | 2.56% | +26,651 | New |
| Next Century Growth Investors LLC | 26,167 | $4.28M | 0.31% | +5,866+28.9% | Added |
| MML Investors Services, LLC | 24,773 | $4.05M | 0.01% | −9,417−27.5% | Reduced |
| HighVista Strategies LLC | 24,316 | $3.98M | 1.10% | −15,084−38.3% | Reduced |
| Shelton Capital Management | 24,217 | $3.96M | 0.09% | −102−0.4% | Reduced |
| Elo Mutual Pension Insurance Co | 24,125 | $3.94M | 0.07% | +11,716+94.4% | Added |
| Sanctuary Advisors, LLC | 23,969 | $3.92M | 0.02% | +2,633+12.3% | Added |
| Allstate Corp | 23,888 | $3.91M | 0.04% | +8,018+50.5% | Added |
| Mackenzie Financial Corp | 23,771 | $3.89M | 0.00% | +2,151+9.9% | Added |
| SummitTX Capital, L.P. | 23,153 | $3.79M | 0.12% | −2,814−10.8% | Reduced |
| Brown Advisory Inc | 22,949 | $3.75M | 0.01% | +2,960+14.8% | Added |
| Tobam | 22,312 | $3.65M | 0.95% | +6,004+36.8% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 22,303 | $3.65M | 0.03% | 00.0% | Unchanged |
| OP Asset Management Ltd | 22,222 | $3.63M | 0.04% | −28,327−56.0% | Reduced |
| Mariner, LLC | 22,072 | $3.61M | 0.00% | −13,200−37.4% | Reduced |
| Atria Investments LLC | 21,845 | $3.57M | 0.04% | +1,460+7.2% | Added |
| Nordea Investment Management AB | 22,247 | $3.55M | 0.00% | +2,239+11.2% | Added |
| ASR Vermogensbeheer N.V. | 21,496 | $3.51M | 0.04% | +388+1.8% | Added |
| Cerity Partners LLC | 21,484 | $3.51M | 0.00% | +2,085+10.7% | Added |
| Robeco Institutional Asset Management B.V. | 20,774 | $3.40M | 0.00% | +19,102+1,142.5% | Added |
| Sectoral Asset Management Inc | 19,668 | $3.38M | 2.80% | +8,486+75.9% | Added |
| Renaissance Technologies LLC | 20,300 | $3.32M | 0.01% | −5,600−21.6% | Reduced |
| Bamco Inc | 20,000 | $3.27M | 0.01% | −18,200−47.6% | Reduced |
| Silvant Capital Management LLC | 19,905 | $3.25M | 0.11% | +321+1.6% | Added |
| Nomura Holdings Inc | 19,045 | $3.11M | 0.03% | −11,440−37.5% | Reduced |
| Public Employees Retirement Association of Colorado | 19,020 | $3.11M | 0.01% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 18,657 | $3.05M | 0.00% | −619−3.2% | Reduced |
| Swiss Life Asset Management Ltd | 18,506 | $3.03M | 0.01% | +4,502+32.1% | Added |
| Wealthfront Advisers LLC | 18,404 | $3.01M | 0.01% | +8,413+84.2% | Added |
| Eurizon Capital SGR S.p.A. | 18,473 | $3.00M | 0.01% | +4,504+32.2% | Added |
| Fifth Third Bancorp | 18,200 | $2.98M | 0.01% | +17,842+4,983.8% | Added |
| Baird Financial Group, Inc. | 17,688 | $2.89M | 0.00% | −1,996−10.1% | Reduced |
| SBI Okasan Asset Management Co.Ltd. | 18,000 | $2.76M | 0.11% | −2,200−10.9% | Reduced |
| Gulf International Bank (UK) Ltd | 16,545 | $2.71M | 0.06% | +5,512+50.0% | Added |
| O'Shaughnessy Asset Management, LLC | 16,050 | $2.62M | 0.01% | −5,879−26.8% | Reduced |
| Oak Ridge Investments LLC | 16,044 | $2.62M | 0.17% | +2,231+16.2% | Added |
| Harvest Fund Management Co., Ltd | 15,921 | $2.60M | 0.11% | −1,370−7.9% | Reduced |
| Amalgamated Bank | 15,921 | $2.60M | 0.02% | −822−4.9% | Reduced |
| Prudential Financial Inc | 15,875 | $2.60M | 0.00% | +9,938+167.4% | Added |
| Atom Investors LP | 15,768 | $2.58M | 0.18% | +15,768 | New |
| Truist Financial Corp | 15,416 | $2.52M | 0.00% | −317−2.0% | Reduced |
| Tower Research Capital LLC (TRC) | 15,410 | $2.52M | 0.07% | +10,113+190.9% | Added |
| Investment Management Corp of Ontario | 15,221 | $2.49M | 0.03% | +1,000+7.0% | Added |
| Bank of Nova Scotia | 15,203 | $2.49M | 0.00% | −45,572−75.0% | Reduced |
| Keybank National Association | 14,836 | $2.43M | 0.01% | −330−2.2% | Reduced |
| WCM Investment Management, LLC | 15,707 | $2.41M | 0.01% | +5,339+51.5% | Added |
| Oppenheimer Asset Management Inc. | 14,725 | $2.41M | 0.03% | +1,574+12.0% | Added |
| Allianz Asset Management GmbH | 14,600 | $2.39M | 0.00% | −28,007−65.7% | Reduced |
| Royal London Asset Management Ltd | 14,498 | $2.37M | 0.00% | +5,988+70.4% | Added |
| Quantitative Investment Management, LLC | 14,305 | $2.34M | 0.24% | +6,157+75.6% | Added |
| Louisiana State Employees Retirement System | 14,200 | $2.32M | 0.04% | −100−0.7% | Reduced |
| Nisa Investment Advisors, LLC | 13,447 | $2.20M | 0.01% | −4,095−23.3% | Reduced |
| Captrust Financial Advisors | 13,252 | $2.17M | 0.00% | +7,868+146.1% | Added |
| Capital Investment Advisors, LLC | 13,245 | $2.17M | 0.03% | +13,245 | New |
| Abn Amro Investment Solutions | 13,143 | $2.15M | 0.03% | +3,154+31.6% | Added |
| Sterling Capital Management LLC | 12,993 | $2.12M | 0.04% | +10,811+495.5% | Added |
| Thrivent Financial for Lutherans | 12,633 | $2.07M | 0.00% | +12,633 | New |
| Havemeyer Place LP | 12,461 | $2.04M | 0.24% | +6,570+111.5% | Added |
| MetLife Investment Management | 12,290 | $2.01M | 0.01% | −601−4.7% | Reduced |
| Ilmarinen Mutual Pension Insurance Co | 12,000 | $1.96M | 0.02% | +12,000 | New |