NewAmsterdam Pharma Co N.V.
NAMS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001936258
In the last 90 days, NewAmsterdam Pharma Co N.V. insiders filed 1 open-market purchase and 3 sales; 194 institutions reported holding it in 13F filings for Q2 2026, worth $4.13B in total; 3 superinvestors hold it, including Viking Global Investors and Maverick Capital.
Other share classesNAMSW
13F holders, Q4 2025
Institutional positions in NewAmsterdam Pharma Co N.V. 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
- 187
- +52 vs. Q3 2025
- Shares held
- 119.3M
- −1.05M (−0.9%) vs. Q3 2025
- Total value
- $4.19B
- +$762.8M (+22.3%) vs. Q3 2025
- New holders
- 61
- 53 more added
- Sold out
- 9
- 51 more reduced
2 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 NAMS 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 | 194 | $4.13B |
| Q1 2026 | 171 | $3.96B |
| Q4 2025 | 187 | $4.19B |
| Q3 2025 | 137 | $3.43B |
| Q2 2025 | 131 | $2.11B |
| Q1 2025 | 126 | $2.28B |
| Q4 2024 | 131 | $2.53B |
| Q3 2024 | 100 | $1.28B |
| Q2 2024 | 90 | $1.38B |
| Q1 2024 | 76 | $1.71B |
| Q4 2023 | 32 | $691.4M |
| Q3 2023 | 35 | $464.1M |
| Q2 2023 | 29 | $580.6M |
| Q1 2023 | 19 | $444.9M |
| Q4 2022 | 14 | $362.2M |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding NewAmsterdam Pharma Co N.V.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 16,943,774 | $594.4M | 15.96% | +241,818+1.4% | Added |
| Capital World Investors | 9,984,000 | $350.2M | 0.05% | +161,289+1.6% | Added |
| Ra Capital Management, L.P. | 9,550,191 | $335.0M | 3.43% | −588,747−5.8% | Reduced |
| FCPM III Services B.V. | 9,198,900 | $322.7M | 42.30% | −13,484−0.1% | Reduced |
| Bain Capital Life Sciences Investors, LLC | 7,306,566 | $256.3M | 19.63% | −3,412,544−31.8% | Reduced |
| FMR LLC | 6,412,984 | $225.0M | 0.01% | +877,691+15.9% | Added |
| Wellington Management Group LLP | 5,033,175 | $176.6M | 0.03% | +1,013,049+25.2% | Added |
| Viking Global Investors LPSuperinvestorViking Global Investors | 4,203,567 | $147.5M | 0.39% | −2,271,967−35.1% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 4,164,789 | $146.1M | 1.87% | −101,904−2.4% | Reduced |
| Jennison Associates LLC | 3,489,221 | $122.4M | 0.07% | −709,333−16.9% | Reduced |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 3,070,146 | $107.7M | 2.55% | +1,146,446+59.6% | Added |
| Medicxi Ventures Management (Jersey) Ltd | 2,869,565 | $100.7M | 12.06% | 00.0% | Unchanged |
| Polar Capital Holdings Plc | 2,776,222 | $97.4M | 0.45% | −135,412−4.7% | Reduced |
| Janus Henderson Group PLC | 2,341,723 | $82.3M | 0.04% | +224,648+10.6% | Added |
| Capital International Investors | 2,062,535 | $72.4M | 0.01% | 00.0% | Unchanged |
| Maverick Capital LtdSuperinvestorMaverick Capital | 1,894,226 | $66.4M | 0.71% | +389,479+25.9% | Added |
| Goldman Sachs Group Inc | 1,725,662 | $60.5M | 0.01% | +845,110+96.0% | Added |
| Adage Capital Partners GP, L.L.C. | 1,406,631 | $49.3M | 0.07% | −1,170,000−45.4% | Reduced |
| Alliancebernstein L.P. | 1,300,875 | $45.6M | 0.01% | −840,903−39.3% | Reduced |
| Castle Hook Partners LP | 1,085,008 | $38.1M | 0.55% | +1,085,008 | New |
| Cormorant Asset Management, LP | 1,000,000 | $35.1M | 1.99% | −1,175,000−54.0% | Reduced |
| JPMorgan Chase & Co | 999,976 | $35.1M | 0.00% | −302,522−23.2% | Reduced |
| UBS Group AG | 899,442 | $31.6M | 0.01% | +130,922+17.0% | Added |
| First Turn Management, LLC | 893,473 | $31.3M | 3.58% | +176,502+24.6% | Added |
| BlackRock, Inc. | 849,779 | $29.8M | 0.00% | +227,264+36.5% | Added |
| TimesSquare Capital Management, LLC | 822,300 | $28.8M | 0.43% | −15,068−1.8% | Reduced |
| Franklin Resources Inc | 769,120 | $27.0M | 0.01% | +363,295+89.5% | Added |
| Woodline Partners LP | 751,270 | $26.4M | 0.10% | −406,597−35.1% | Reduced |
| Pictet Asset Management Holding SA | 746,122 | $26.2M | 0.03% | −546,028−42.3% | Reduced |
| Standard Life Aberdeen plc | 729,484 | $25.6M | 0.04% | +67,538+10.2% | Added |
| Nwi Management LP | 702,000 | $24.6M | 1.51% | +702,000 | New |
| Citadel Advisors LLC | 635,247 | $22.3M | 0.02% | +428,786+207.7% | Added |
| American Century Companies Inc | 603,401 | $21.2M | 0.01% | −20,884−3.3% | Reduced |
| Decheng Capital LLC | 592,057 | $20.8M | 2.79% | −64,994−9.9% | Reduced |
| Rock Springs Capital Management LP | 557,194 | $19.5M | 1.00% | −38,735−6.5% | Reduced |
| Ensign Peak Advisors, Inc | 549,511 | $19.3M | 0.03% | +549,511 | New |
| Morgan Stanley | 532,803 | $18.7M | 0.00% | −964,676−64.4% | Reduced |
| Artia Global Partners LP | 503,936 | $17.7M | 2.84% | +309,098+158.6% | Added |
| Bank of America Corp | 459,391 | $16.1M | 0.00% | −12,709−2.7% | Reduced |
| Logos Global Management LP | 450,000 | $15.8M | 1.05% | +450,000 | New |
| Jane Street Group, LLC | 421,491 | $14.8M | 0.02% | +421,491 | New |
| Eversept Partners, LP | 420,827 | $14.8M | 0.83% | −67,765−13.9% | Reduced |
| Handelsbanken Fonder AB | 415,800 | $14.6M | 0.04% | +10,000+2.5% | Added |
| Bank of New York Mellon Corp | 391,827 | $13.7M | 0.00% | +58,829+17.7% | Added |
| Slate Path Capital LP | 319,000 | $11.2M | 0.15% | 00.0% | Unchanged |
| ArrowMark Colorado Holdings LLC | 298,077 | $10.5M | 0.23% | −12,922−4.2% | Reduced |
| First Trust Advisors LP | 279,701 | $9.81M | 0.01% | +279,701 | New |
| Affinity Asset Advisors, LLC | 275,000 | $9.65M | 0.69% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 265,199 | $9.30M | 0.00% | +265,199 | New |
| Millennium Management LLC | 254,596 | $8.93M | 0.01% | +254,596 | New |
| Gilder Gagnon Howe & Co LLC | 248,528 | $8.72M | 0.09% | +212,144+583.1% | Added |
| Nicholas Investment Partners, LP | 213,419 | $7.49M | 0.55% | +35,881+20.2% | Added |
| Lord, Abbett & Co. LLC | 200,638 | $7.04M | 0.02% | +200,638 | New |
| HealthInvest Partners AB | 197,036 | $6.91M | 2.21% | +3,411+1.8% | Added |
| Susquehanna International Group, LLP | 195,635 | $6.86M | 0.01% | +43,798+28.8% | Added |
| Lisanti Capital Growth, LLC | 179,410 | $6.29M | 1.49% | +131,965+278.1% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 177,016 | $6.21M | 0.01% | +177,016 | New |
| Vanguard Group Inc | 172,956 | $6.07M | 0.00% | +490+0.3% | Added |
| Kennedy Capital Management, Inc. | 172,931 | $6.07M | 0.13% | +26,216+17.9% | Added |
| DCF Advisers, LLC | 160,600 | $5.63M | 1.86% | −14,650−8.4% | Reduced |
| Ameriprise Financial Inc | 152,269 | $5.34M | 0.00% | +6,942+4.8% | Added |
| Moody Aldrich Partners LLC | 143,549 | $5.04M | 0.94% | +143,549 | New |
| XTX Topco Ltd | 137,492 | $4.82M | 0.13% | +129,913+1,714.1% | Added |
| Deutsche Bank AG | 123,963 | $4.35M | 0.00% | +55,538+81.2% | Added |
| ADAR1 Capital Management, LLC | 118,623 | $4.16M | 0.31% | +4,264+3.7% | Added |
| Price T Rowe Associates Inc | 116,258 | $4.08M | 0.00% | −22,071−16.0% | Reduced |
| Geode Capital Management, LLC | 102,395 | $3.59M | 0.00% | +437+0.4% | Added |
| Walleye Capital LLC | 96,261 | $3.38M | 0.02% | +96,261 | New |
| Alps Advisors Inc | 92,902 | $3.26M | 0.02% | +92,902 | New |
| Swedbank AB | 90,900 | $3.19M | 0.00% | +90,900 | New |
| Swiss National Bank | 88,900 | $3.12M | 0.00% | +1,800+2.1% | Added |
| JTC Employer Solutions Trusteee Ltd | 75,500 | $3.02M | 0.20% | +75,500 | New |
| Legato Capital Management LLC | 83,833 | $2.94M | 0.25% | +60,463+258.7% | Added |
| Centiva Capital, LP | 80,000 | $2.81M | 0.17% | +80,000 | New |
| StemPoint Capital LP | 73,106 | $2.56M | 0.44% | −77,467−51.4% | Reduced |
| Russell Investments Group, Ltd. | 71,282 | $2.50M | 0.00% | +71,282 | New |
| State Street Corp | 68,523 | $2.40M | 0.00% | +4,713+7.4% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 63,302 | $2.22M | 0.00% | +63,302 | New |
| Lifetime Wealth Management P.C. | 59,250 | $2.08M | 1.31% | +59,250 | New |
| Mizuho Markets Cayman LP | 47,879 | $1.68M | 0.08% | +47,879 | New |
| Jain Global LLC | 47,584 | $1.67M | 0.02% | +47,584 | New |
| Fred Alger Management, LLC | 47,535 | $1.67M | 0.01% | +6,271+15.2% | Added |
| Aquatic Capital Management LLC | 45,989 | $1.61M | 0.05% | +45,989 | New |
| Ikarian Capital, LLC | 45,830 | $1.61M | 0.21% | −60,970−57.1% | Reduced |
| SEI Investments Co | 41,040 | $1.44M | 0.00% | +41,040 | New |
| Legal & General Group Plc | 40,951 | $1.44M | 0.00% | −4,787−10.5% | Reduced |
| California State Teachers Retirement System | 40,276 | $1.41M | 0.00% | −7,586−15.8% | Reduced |
| Bellevue Group AG | 36,336 | $1.27M | 0.02% | +21,725+148.7% | Added |
| HighVista Strategies LLC | 35,586 | $1.25M | 0.32% | +3,755+11.8% | Added |
| Boothbay Fund Management, LLC | 33,919 | $1.19M | 0.03% | −6,795−16.7% | Reduced |
| Knights of Columbus Asset Advisors LLC | 32,483 | $1.14M | 0.06% | −1,127−3.4% | Reduced |
| Verition Fund Management LLC | 32,391 | $1.14M | 0.01% | +18,563+134.2% | Added |
| Northern Trust Corp | 32,137 | $1.13M | 0.00% | −1,162−3.5% | Reduced |
| Squarepoint Ops LLC | 30,819 | $1.08M | 0.00% | +9,860+47.0% | Added |
| Ishara Investments LP | 30,000 | $1.05M | 1.22% | +30,000 | New |
| Voya Investment Management LLC | 28,875 | $1.01M | 0.00% | +9,575+49.6% | Added |
| Winton Group Ltd | 28,665 | $1.01M | 0.03% | +28,665 | New |
| Twinbeech Capital LP | 27,400 | $961.2K | 0.07% | +27,400 | New |
| New York State Common Retirement Fund | 26,680 | $935.9K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 26,477 | $928.8K | 0.07% | +6,735+34.1% | Added |