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, Q2 2026
Institutional positions in INSMED Inc as of Jun 30, 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
- 667
- −3 vs. Q1 2026
- Shares held
- 223.7M
- +3.22M (+1.5%) vs. Q1 2026
- Total value
- $23.8B
- −$11.8B (−33.1%) vs. Q1 2026
- New holders
- 119
- 247 more added
- Sold out
- 122
- 231 more reduced
5 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding INSMED Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Squarepoint Ops LLC | 616,464 | $65.7M | 0.13% | +577,148+1,468.0% | Added |
| GW&K Investment Management, LLC | 629,760 | $67.1M | 0.52% | +6,712+1.1% | Added |
| William Blair Investment Management, LLC | 629,831 | $67.2M | 0.20% | −272,835−30.2% | Reduced |
| Affinity Asset Advisors, LLC | 650,000 | $69.3M | 3.39% | +170,000+35.4% | Added |
| Raymond James Financial Inc | 660,601 | $70.4M | 0.02% | −114,547−14.8% | Reduced |
| HRT Financial LP | 689,981 | $73.6M | 0.13% | +689,981 | New |
| Deutsche Bank AG | 690,590 | $73.6M | 0.02% | +128,116+22.8% | Added |
| Ensign Peak Advisors, Inc | 702,951 | $74.9M | 0.12% | +203,195+40.7% | Added |
| Alliancebernstein L.P. | 462,796 | $75.7M | 0.03% | −225,938−32.8% | Reduced |
| Clearbridge Investments, LLC | 715,922 | $76.3M | 0.06% | +72,487+11.3% | Added |
| TimesSquare Capital Management, LLC | 728,096 | $77.6M | 1.14% | +143,298+24.5% | Added |
| Susquehanna International Group, LLP | 729,354 | $77.8M | 0.07% | +555,724+320.1% | Added |
| Samlyn Capital, LLC | 732,568 | $78.1M | 1.29% | +315,363+75.6% | Added |
| American Century Companies Inc | 759,735 | $81.0M | 0.04% | −166,064−17.9% | Reduced |
| Frontier Capital Management Co LLC | 795,242 | $84.8M | 0.79% | +325,681+69.4% | Added |
| Legal & General Group Plc | 826,431 | $88.1M | 0.02% | +39,352+5.0% | Added |
| Fiera Capital Corp | 843,042 | $89.9M | 0.33% | −178,928−17.5% | Reduced |
| Adage Capital Partners GP, L.L.C. | 850,000 | $90.6M | 0.13% | −50,000−5.6% | Reduced |
| Principal Financial Group Inc | 856,126 | $91.3M | 0.04% | −60,338−6.6% | Reduced |
| FIL Ltd | 856,214 | $91.3M | 0.07% | +27,267+3.3% | Added |
| Polar Capital Holdings Plc | 890,872 | $95.0M | 0.27% | +522,765+142.0% | Added |
| Jennison Associates LLC | 905,094 | $96.5M | 0.06% | +300,400+49.7% | Added |
| Castle Hook Partners LP | 993,310 | $105.9M | 1.13% | −276,444−21.8% | Reduced |
| Nwi Management LP | 1,014,000 | $108.1M | 6.91% | 00.0% | Unchanged |
| SEI Investments Co | 1,015,870 | $108.3M | 0.10% | −379,924−27.2% | Reduced |
| Bank of America Corp | 1,023,114 | $109.1M | 0.01% | −479,167−31.9% | Reduced |
| Hood River Capital Management LLC | 1,056,871 | $112.7M | 0.82% | +368,317+53.5% | Added |
| Charles Schwab Investment Management Inc | 1,213,963 | $129.4M | 0.02% | +144,573+13.5% | Added |
| Pictet Asset Management Holding SA | 1,220,353 | $129.8M | 0.12% | +118,105+10.7% | Added |
| Morgan Stanley | 1,233,498 | $131.5M | 0.01% | −98,044−7.4% | Reduced |
| Two Sigma Investments, LP | 1,242,222 | $132.4M | 0.10% | +1,005,205+424.1% | Added |
| Bank of New York Mellon Corp | 1,312,756 | $140.0M | 0.02% | +50,007+4.0% | Added |
| Northern Trust Corp | 1,315,325 | $140.2M | 0.02% | +21,325+1.6% | Added |
| Paradigm Biocapital Advisors LP | 1,325,977 | $141.4M | 2.65% | +71,489+5.7% | Added |
| Balyasny Asset Management LLC | 1,326,430 | $141.4M | 0.26% | +1,104,723+498.3% | Added |
| UBS Asset Management Americas Inc | 1,335,071 | $142.3M | 0.03% | +120,046+9.9% | Added |
| Bellevue Group AG | 1,393,418 | $148.6M | 3.13% | +1,383,384+13,787.0% | Added |
| Vanguard Fiduciary Trust Co | 1,401,552 | $149.4M | 0.03% | +47,036+3.5% | Added |
| Goldman Sachs Group Inc | 1,409,885 | $150.3M | 0.02% | +467,239+49.6% | Added |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 1,424,690 | $151.9M | 3.49% | +270,600+23.4% | Added |
| Integral Health Asset Management, LLC | 1,600,000 | $170.6M | 7.00% | +100,000+6.7% | Added |
| T. Rowe Price Investment Management, Inc. | 1,622,675 | $173.0M | 0.11% | +1,622,675 | New |
| Westfield Capital Management Co LP | 1,629,561 | $173.7M | 0.57% | +161,102+11.0% | Added |
| Qube Research & Technologies Ltd | 1,682,334 | $179.4M | 0.20% | +1,533,819+1,032.8% | Added |
| Millennium Management LLC | 2,048,005 | $218.4M | 0.15% | +890,219+76.9% | Added |
| Maverick Capital LtdSuperinvestorMaverick Capital | 2,150,762 | $229.3M | 2.07% | +2,150,762 | New |
| Franklin Resources Inc | 2,273,222 | $242.4M | 0.05% | −344,029−13.1% | Reduced |
| Citadel Advisors LLC | 2,556,973 | $272.6M | 0.16% | +374,402+17.2% | Added |
| UBS Group AG | 2,584,446 | $275.6M | 0.04% | +846,965+48.7% | Added |
| Jupiter Topco LLC | 2,605,181 | $277.8M | 0.11% | +2,605,181 | New |
| Norges Bank | 3,377,641 | $360.1M | 0.04% | +3,377,641 | New |
| Price T Rowe Associates Inc | 3,405,290 | $363.1M | 0.04% | +312,483+10.1% | Added |
| Geode Capital Management, LLC | 4,220,155 | $448.8M | 0.02% | −230,234−5.2% | Reduced |
| RTW Investments, LP | 4,842,880 | $516.3M | 4.41% | 00.0% | Unchanged |
| Artisan Partners Limited Partnership | 5,441,718 | $580.2M | 0.95% | −1,085,583−16.6% | Reduced |
| D. E. Shaw & Co., Inc. | 5,877,959 | $626.7M | 0.39% | +252,134+4.5% | Added |
| State Street Corp | 6,052,174 | $645.3M | 0.02% | +500,475+9.0% | Added |
| Orbis Allan Gray Ltd | 6,076,487 | $647.9M | 2.23% | +4,203,663+224.5% | Added |
| Ameriprise Financial Inc | 6,179,571 | $658.9M | 0.13% | +3,121,853+102.1% | Added |
| Darwin Global Management, Ltd. | 6,431,163 | $673.6M | 17.91% | −10,374,021−61.7% | Reduced |
| Capital International Investors | 8,238,124 | $878.3M | 0.18% | +2,642,930+47.2% | Added |
| Baker Bros. Advisors LP | 8,796,111 | $937.8M | 4.70% | +1,375,000+18.5% | Added |
| Vanguard Capital Management LLC | 9,790,865 | $1.04B | 0.02% | +148,734+1.5% | Added |
| JPMorgan Chase & Co | 10,428,170 | $1.09B | 0.06% | −13,722,329−56.8% | Reduced |
| Vanguard Portfolio Management LLC | 10,407,962 | $1.11B | 0.05% | +36,160+0.3% | Added |
| BlackRock, Inc. | 15,807,984 | $1.69B | 0.03% | −870,162−5.2% | Reduced |
| FMR LLC | 16,143,583 | $1.72B | 0.07% | +2,983,416+22.7% | Added |
| Capital World Investors | 0 | $0 | 0.00% | −1,362,291−100.0% | Sold out |
| Summit Partners Public Asset Management, LLC | 0 | $0 | 0.00% | −653,445−100.0% | Sold out |
| Lord, Abbett & Co. LLC | 0 | $0 | 0.00% | −397,261−100.0% | Sold out |
| Nearwater Capital Markets, Ltd | 0 | $0 | 0.00% | −300,000−100.0% | Sold out |
| Axiom Investors LLC | 0 | $0 | 0.00% | −239,447−100.0% | Sold out |
| Evergreen Quality Fund GP, Ltd. | 0 | $0 | 0.00% | −232,500−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −207,527−100.0% | Sold out |
| Loomis Sayles & Co L P | 0 | $0 | 0.00% | −194,982−100.0% | Sold out |
| Patient Square Capital LP | 0 | $0 | 0.00% | −157,500−100.0% | Sold out |
| NEOS Investment Management LLC | 0 | $0 | 0.00% | −110,426−100.0% | Sold out |
| Driehaus Capital Management LLC | 0 | $0 | 0.00% | −105,414−100.0% | Sold out |
| Parnassus Investments | 0 | $0 | 0.00% | −69,515−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −56,529−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −32,190−100.0% | Sold out |
| 1832 Asset Management L.P. | 0 | $0 | 0.00% | −28,900−100.0% | Sold out |
| Shelton Capital Management | 0 | $0 | 0.00% | −24,217−100.0% | Sold out |
| Elo Mutual Pension Insurance Co | 0 | $0 | 0.00% | −24,125−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −22,072−100.0% | Sold out |
| ASR Vermogensbeheer N.V. | 0 | $0 | 0.00% | −21,496−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −20,300−100.0% | Sold out |
| Baird Financial Group, Inc. | 0 | $0 | 0.00% | −17,688−100.0% | Sold out |
| Harvest Fund Management Co., Ltd | 0 | $0 | 0.00% | −15,921−100.0% | Sold out |
| Louisiana State Employees Retirement System | 0 | $0 | 0.00% | −14,200−100.0% | Sold out |
| Draper Asset Management, LLC | 0 | $0 | 0.00% | −11,321−100.0% | Sold out |
| AG2R la Mondiale Gestion D'Actifs | 0 | $0 | 0.00% | −11,244−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −10,715−100.0% | Sold out |
| Formula Growth Ltd | 0 | $0 | 0.00% | −9,000−100.0% | Sold out |
| Fig Financial Advisory Services Inc | 0 | $0 | 0.00% | −8,308−100.0% | Sold out |
| Norinchukin Bank, The | 0 | $0 | 0.00% | −8,078−100.0% | Sold out |
| Ameritas Investment Partners, Inc. | 0 | $0 | 0.00% | −7,788−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −6,775−100.0% | Sold out |
| ING Groep NV | 0 | $0 | 0.00% | −5,996−100.0% | Sold out |
| Pinkerton Retirement Specialists, LLC | 0 | $0 | 0.00% | −5,248−100.0% | Sold out |