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 |
|---|---|---|---|---|---|
| Citigroup Inc | 237,914 | $41.4M | 0.03% | +157,828+197.1% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 222,266 | $39.4M | 0.03% | +221,945+69,141.7% | Added |
| Allspring Global Investments Holdings, LLC | 220,084 | $39.0M | 0.06% | −7,545−3.3% | Reduced |
| Eagle Health Investments LP | 210,900 | $36.7M | 8.07% | −60,700−22.3% | Reduced |
| Neuberger Berman Group LLC | 207,869 | $36.2M | 0.03% | +57,763+38.5% | Added |
| Susquehanna Portfolio Strategies, LLC | 207,527 | $36.1M | 0.56% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 206,532 | $35.9M | 0.22% | +206,532 | New |
| Voya Investment Management LLC | 200,964 | $35.0M | 0.03% | −18,875−8.6% | Reduced |
| Novo Holdings A/S | 200,000 | $34.8M | 2.70% | 00.0% | Unchanged |
| Loomis Sayles & Co L P | 199,955 | $34.8M | 0.04% | −292,341−59.4% | Reduced |
| Susquehanna International Group, LLP | 188,576 | $32.8M | 0.05% | −44,530−19.1% | Reduced |
| American Century Companies Inc | 185,090 | $32.2M | 0.02% | +108,411+141.4% | Added |
| Nicholas Investment Partners, LP | 180,410 | $31.4M | 2.29% | −410.0% | Reduced |
| State Board of Administration of Florida Retirement System | 180,295 | $31.4M | 0.06% | +45,275+33.5% | Added |
| Tremblant Capital Group | 175,650 | $30.6M | 0.78% | +175,650 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 161,824 | $28.2M | 0.06% | +107,624+198.6% | Added |
| Sofinnova Investments, Inc. | 156,801 | $27.3M | 1.18% | +52,462+50.3% | Added |
| Russell Investments Group, Ltd. | 145,095 | $25.3M | 0.03% | −21,364−12.8% | Reduced |
| Perpetual Ltd | 141,517 | $24.6M | 0.36% | +141,517 | New |
| C WorldWide Group Holding A/S | 136,110 | $23.7M | 0.41% | −60,000−30.6% | Reduced |
| LPL Financial LLC | 132,784 | $23.1M | 0.01% | +25,846+24.2% | Added |
| State of Wisconsin Investment Board | 131,624 | $22.9M | 0.05% | −1,741−1.3% | Reduced |
| Woodline Partners LP | 130,152 | $22.7M | 0.09% | +3,890+3.1% | Added |
| Caption Management, LLC | 130,000 | $22.6M | 1.00% | +129,919+160,393.8% | Added |
| Long Focus Capital Management, LLC | 125,000 | $21.8M | 1.08% | −213,000−63.0% | Reduced |
| HSBC Holdings PLC | 123,267 | $21.5M | 0.01% | +121,755+8,052.6% | Added |
| ING Groep NV | 122,945 | $21.4M | 0.13% | −250,555−67.1% | Reduced |
| Evergreen Quality Fund GP, Ltd. | 120,500 | $21.0M | 0.41% | +120,500 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 120,381 | $21.0M | 0.03% | +116,406+2,928.5% | Added |
| Manufacturers Life Insurance Company, The | 118,847 | $20.7M | 0.02% | −74,983−38.7% | Reduced |
| Man Group plc | 118,361 | $20.6M | 0.04% | +33,192+39.0% | Added |
| Rhenman & Partners Asset Management AB | 113,585 | $19.8M | 1.85% | −18,300−13.9% | Reduced |
| Danske Bank A/S | 110,258 | $19.2M | 0.04% | +107,858+4,494.1% | Added |
| Aviva PLC | 109,401 | $19.0M | 0.03% | +109,401 | New |
| Suvretta Capital Management, LLC | 109,313 | $19.0M | 0.47% | −108,470−49.8% | Reduced |
| National Bank of Canada | 108,706 | $18.9M | 0.02% | +106,225+4,281.5% | Added |
| LMR Partners LLP | 107,510 | $18.7M | 0.18% | +13,598+14.5% | Added |
| Assenagon Asset Management S.A. | 106,826 | $18.6M | 0.03% | −22,419−17.3% | Reduced |
| Driehaus Capital Management LLC | 105,617 | $18.4M | 0.12% | +6,316+6.4% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 103,308 | $18.0M | 0.03% | +48,779+89.5% | Added |
| Rafferty Asset Management, LLC | 100,812 | $17.5M | 0.06% | +45,653+82.8% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 96,353 | $16.8M | 0.07% | +41,569+75.9% | Added |
| Los Angeles Capital Management LLC | 82,385 | $16.0M | 0.05% | −45,118−35.4% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 89,088 | $15.5M | 0.13% | +6,574+8.0% | Added |
| Van Eck Associates Corp | 89,035 | $15.5M | 0.01% | −17,667−16.6% | Reduced |
| Treasurer of the State of North Carolina | 87,740 | $15.3M | 0.05% | +3,988+4.8% | Added |
| Nomura Asset Management Co Ltd | 83,544 | $14.5M | 0.04% | +80,181+2,384.2% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 83,032 | $14.5M | 0.03% | +83,032 | New |
| Guggenheim Capital LLC | 82,291 | $14.3M | 0.11% | +45,431+123.3% | Added |
| Asset Management One Co.,Ltd. | 80,887 | $14.3M | 0.04% | +80,887 | New |
| Fred Alger Management, LLC | 81,311 | $14.2M | 0.06% | −12,722−13.5% | Reduced |
| EULAV Asset Management | 81,000 | $14.1M | 0.38% | −9,000−10.0% | Reduced |
| ExodusPoint Capital Management, LP | 80,087 | $13.9M | 0.16% | +80,087 | New |
| Mirae Asset Global Investments Co., Ltd. | 78,492 | $13.7M | 0.04% | +69,410+764.3% | Added |
| Atika Capital Management LLC | 77,200 | $13.4M | 1.87% | −17,800−18.7% | Reduced |
| KLP Kapitalforvaltning AS | 74,000 | $12.9M | 0.05% | +33,000+80.5% | Added |
| Korea Investment CORP | 72,629 | $12.6M | 0.02% | +72,629 | New |
| State of New Jersey Common Pension Fund D | 72,129 | $12.6M | 0.05% | +5,805+8.8% | Added |
| Silverarc Capital Management, LLC | 71,256 | $12.4M | 1.79% | −135,392−65.5% | Reduced |
| Creative Planning | 70,502 | $12.3M | 0.01% | +647+0.9% | Added |
| Stifel Financial Corp | 69,238 | $12.1M | 0.01% | −622−0.9% | Reduced |
| Schroder Investment Management Group | 67,389 | $11.7M | 0.01% | −3,532−5.0% | Reduced |
| SG Americas Securities, LLC | 66,762 | $11.6M | 0.02% | +49,356+283.6% | Added |
| Squarepoint Ops LLC | 66,402 | $11.6M | 0.02% | +66,402 | New |
| Healthcare of Ontario Pension Plan Trust Fund | 65,313 | $11.4M | 0.02% | +65,313 | New |
| Handelsbanken Fonder AB | 63,581 | $11.1M | 0.03% | +13,400+26.7% | Added |
| Public Employees Retirement System of Ohio | 63,027 | $11.0M | 0.03% | +4,836+8.3% | Added |
| Bank of Montreal | 62,800 | $10.9M | 0.00% | −28,966−31.6% | Reduced |
| Essex Investment Management Co LLC | 62,423 | $10.9M | 1.66% | −24,654−28.3% | Reduced |
| Bank of Nova Scotia | 60,775 | $10.6M | 0.02% | −445,470−88.0% | Reduced |
| Resona Asset Management Co.,Ltd. | 60,381 | $10.5M | 0.05% | +60,381 | New |
| Tang Capital Management LLC | 60,000 | $10.4M | 0.52% | −140,000−70.0% | Reduced |
| Alyeska Investment Group, L.P. | 60,000 | $10.4M | 0.03% | +60,000 | New |
| Royce & Associates LP | 59,705 | $10.4M | 0.11% | −32,671−35.4% | Reduced |
| Swedbank AB | 59,552 | $10.4M | 0.01% | +59,552 | New |
| Agf Management Ltd | 58,835 | $10.2M | 0.04% | +58,835 | New |
| Arizona State Retirement System | 57,931 | $10.1M | 0.05% | +1,767+3.1% | Added |
| Nissay Asset Management Corp | 57,665 | $10.0M | 0.05% | +57,665 | New |
| Picton Mahoney Asset Management | 57,259 | $9.97M | 0.11% | +5,656+11.0% | Added |
| Engineers Gate Manager LP | 54,783 | $9.53M | 0.11% | +42,315+339.4% | Added |
| Great West Life Assurance Co | 54,047 | $9.41M | 0.02% | +7,005+14.9% | Added |
| STRS Ohio | 52,016 | $9.05M | 0.03% | +22,562+76.6% | Added |
| Parnassus Investments | 51,643 | $8.99M | 0.02% | +42,916+491.8% | Added |
| OP Asset Management Ltd | 50,549 | $8.80M | 0.11% | +50,549 | New |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 50,500 | $8.79M | 0.07% | +50,500 | New |
| Erste Asset Management GmbH | 49,603 | $8.75M | 0.07% | +2,003+4.2% | Added |
| 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 |
| Mutual of America Capital Management LLC | 49,080 | $8.54M | 0.09% | −20,674−29.6% | Reduced |
| Soleus Capital Management, L.P. | 48,500 | $8.44M | 0.36% | +45,950+1,802.0% | Added |
| CIBC Asset Management Inc | 48,463 | $8.43M | 0.02% | +43,686+914.5% | Added |
| PFA Pension, Forsikringsaktieselskab | 48,330 | $8.41M | 0.02% | +48,330 | New |
| NEOS Investment Management LLC | 47,957 | $8.35M | 0.05% | +43,660+1,016.1% | Added |
| Forsta Ap-Fonden | 45,100 | $7.85M | 0.05% | +45,100 | New |
| Twinbeech Capital LP | 44,009 | $7.66M | 0.54% | +44,009 | New |
| Xponance, Inc. | 43,042 | $7.49M | 0.06% | +16,624+62.9% | Added |
| Allianz Asset Management GmbH | 42,607 | $7.42M | 0.01% | −23,476−35.5% | Reduced |
| China Universal Asset Management Co., Ltd. | 42,388 | $7.38M | 0.57% | +5,337+14.4% | Added |
| GF Fund Management Co. Ltd. | 42,227 | $7.35M | 0.13% | +37,679+828.5% | Added |
| DnB Asset Management AS | 40,918 | $7.12M | 0.02% | +37,522+1,104.9% | Added |