Newamsterdam Pharma Co. NVNAMS
13F holders, Q3 2025 (September 30)137holders +6
20new positions
15sold out
5famous investors
$28.40avg. 13F price*
At the end of Q3 2025, 137 institutions reported holding Newamsterdam Pharma Co. NV (NAMS) in their 13F filings, up 6 from Q2 2025. 20 opened new positions and 15 sold out. The largest holders were Frazier Life Sciences Management, L.P. ($475.0M), Bain Capital Life Sciences Investors, LLC ($304.9M) and Ra Capital Management, L.P. ($288.4M). 5 famous investors held it, including Stanley Druckenmiller (1.4% of Duquesne Family Office's portfolio), Lee Ainslie (0.6% of Maverick Capital's portfolio) and Andreas Halvorsen (0.5% of Viking Global Investors's portfolio).
- Company
- Newamsterdam Pharma Co. NV
- CUSIP
- N62509109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 20 | $9.4M |
| Exits | 15 | $16.8M |
All 13F filers, Q2 2025 → Q3 2025: 11,238,969 shares bought and 7,219,856 shares sold, net +4,019,113 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 137 holders
| Frazier Life Sciences Management, L.P. | 14.27% | Add +0.6% | 16,701,956 | $475.0M |
| Bain Capital Life Sciences Investors, LLC | 20.26% | No change | 10,719,110 | $304.9M |
| Ra Capital Management, L.P. | 3.56% | No change | 10,138,938 | $288.4M |
| Capital World Investors | 0.04% | Add +17.1% | 9,822,711 | $279.4M |
| FCPM III Services B.V. | 52.36% | Reduce -13.3% | 9,212,384 | $262.0M |
| Viking Global Investors | 0.48% | Reduce -7.2% | 6,475,534 | $184.2M |
| FMR LLC | 0.01% | Add +190.6% | 5,535,293 | $157.4M |
| Deerfield Management Company, L.P. | 2.01% | Reduce -16.6% | 4,266,693 | $121.3M |
| Jennison Associates LLC | 0.07% | Add +42.5% | 4,198,554 | $119.4M |
| Wellington Management Group LLP | 0.02% | Add +21.0% | 4,020,126 | $114.3M |
| Polar Capital Holdings Plc | 0.40% | Add +15.6% | 2,911,634 | $82.8M |
| Medicxi Ventures Management (Jersey) Ltd | 10.96% | No change | 2,869,565 | $81.6M |
| Adage Capital Partners Gp, L.L.C. | 0.12% | Reduce -14.5% | 2,576,631 | $73.3M |
| Cormorant Asset Management, LP | 4.27% | No change | 2,175,000 | $61.9M |
| Alliancebernstein L.P. | 0.02% | Reduce -8.1% | 2,141,778 | $60.9M |
| Janus Henderson Group PLC | 0.03% | Add +7.9% | 2,117,075 | $60.1M |
| Capital International Investors | 0.01% | No change | 2,062,535 | $58.7M |
| Duquesne Family Office | 1.39% | Add +131.2% | 1,923,700 | $54.7M |
| Maverick Capital | 0.57% | Reduce -1.8% | 1,504,747 | $42.8M |
| Morgan Stanley | 0.00% | Add +134.8% | 1,497,479 | $42.6M |
| JPMorgan Chase & Co. | 0.00% | Reduce -10.7% | 1,302,498 | $37.0M |
| Pictet Asset Management Holding SA | 0.04% | Reduce -28.9% | 1,292,150 | $36.7M |
| Woodline Partners LP | 0.15% | Reduce -39.0% | 1,157,867 | $32.9M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -7.3% | 880,552 | $25.0M |
| TimesSquare Capital Management, LLC | 0.34% | Reduce -4.0% | 837,368 | $23.8M |
| UBS Group AG | 0.00% | Add +22.4% | 768,520 | $21.9M |
| Siren, L.L.C. | 0.85% | Reduce -35.9% | 765,705 | $21.8M |
| First Turn Management, LLC | 3.06% | Add +37.6% | 716,971 | $20.4M |
| Aberdeen Group plc | 0.03% | Reduce -9.9% | 661,946 | $18.8M |
| Decheng Capital LLC | 3.26% | Reduce -14.7% | 657,051 | $18.7M |
| American Century Companies Inc. | 0.01% | Add +17.1% | 624,285 | $17.8M |
| BlackRock, Inc. | 0.00% | Add +8.9% | 622,515 | $17.7M |
| Rock Springs Capital Management LP | 0.99% | Add +11.2% | 595,929 | $16.9M |
| Eversept Partners, LP | 1.06% | Add +17.9% | 488,592 | $13.9M |
| Bank of America Corp. | 0.00% | Reduce -2.5% | 472,100 | $13.4M |
| Franklin Resources Inc. | 0.00% | Add +21.4% | 405,825 | $11.5M |
| Handelsbanken Fonder AB | 0.04% | Add +18.8% | 405,800 | $11.5M |
| Bank of New York Mellon Corp | 0.00% | Reduce -5.7% | 332,998 | $9.5M |
| Slate Path Capital LP | 0.14% | No change | 319,000 | $9.1M |
| ArrowMark Colorado Holdings LLC | 0.16% | Reduce -13.3% | 310,999 | $8.8M |
| Affinity Asset Advisors, LLC | 0.75% | No change | 275,000 | $7.8M |
| Citadel Advisors | 0.00% | Reduce -35.5% | 206,461 | $5.9M |
| AXA Investment Managers S.A. | 0.02% | — | 196,782 | $5.6M |
| Artia Global Partners LP | 0.97% | Add +613.2% | 194,838 | $5.5M |
| Nicholas Investment Partners, LP | 0.44% | Add +53.4% | 177,538 | $5.0M |
| DCF Advisers, LLC | 1.89% | Add +1.6% | 175,250 | $5.0M |
| Vanguard Group Inc. | 0.00% | Reduce -3.6% | 172,466 | $4.9M |
| Saturn V Capital Management LP | 0.96% | Reduce -30.6% | 153,147 | $4.4M |
| Susquehanna International Group, LLP | 0.01% | Add +69.0% | 151,837 | $4.3M |
| Stempoint Capital LP | 0.86% | Reduce -1.4% | 150,573 | $4.3M |
| Kennedy Capital Management LLC | 0.09% | Add +972.9% | 146,715 | $4.2M |
| Ameriprise Financial Inc. | 0.00% | Reduce -30.2% | 145,327 | $4.1M |
| T. Rowe Price Associates Inc. | 0.00% | New | 138,329 | $3.9M |
| ADAR1 Capital Management, LLC | 0.32% | Add +1.8% | 114,359 | $3.3M |
| Ikarian Capital, LLC | 0.61% | Reduce -48.4% | 106,800 | $3.0M |
| Invesco Ltd. | 0.00% | Reduce -21.9% | 104,676 | $3.0M |
| Geode Capital Management, LLC | 0.00% | Add +2.5% | 101,958 | $2.9M |
| Swiss National Bank | 0.00% | Add +3.8% | 87,100 | $2.5M |
| CenterBook Partners LP | 0.10% | Add +3.5% | 70,613 | $2.0M |
| Deutsche Bank AG | 0.00% | Add +0.5% | 68,425 | $1.9M |
| State Street Corp. | 0.00% | Reduce -21.5% | 63,810 | $1.8M |
| California State Teachers Retirement System | 0.00% | No change | 47,862 | $1.4M |
| Lisanti Capital Growth, LLC | 0.33% | Reduce -3.4% | 47,445 | $1.3M |
| Legal & General Group Plc | 0.00% | Add +3.4% | 45,738 | $1.3M |
| Fred Alger Management, LLC | 0.00% | Add +87.3% | 41,264 | $1.2M |
| Boothbay Fund Management, LLC | 0.03% | Reduce -32.2% | 40,714 | $1.2M |
| Gilder Gagnon Howe & Co. LLC | 0.01% | New | 36,384 | $1.0M |
| Readystate Asset Management LP | 0.10% | Reduce -85.1% | 34,353 | $977K |
| Knights of Columbus Asset Advisors LLC | 0.05% | Add +2.4% | 33,610 | $956K |
| Northern Trust Corp. | 0.00% | Add +9.9% | 33,299 | $947K |
| HighVista Strategies LLC | 0.22% | Add +65.2% | 31,831 | $905K |
| BNP Paribas Financial Markets | 0.00% | Reduce -6.7% | 27,328 | $777K |
| New York State Common Retirement Fund | 0.00% | New | 26,680 | $759K |
| Royal Bank of Canada | 0.00% | Add +44.6% | 26,502 | $754K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -17.4% | 25,936 | $738K |
| Yarbrough Capital, LLC | 0.02% | No change | 23,960 | $681K |
| Legato Capital Management LLC | 0.07% | Add +24.4% | 23,370 | $665K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +107.1% | 22,505 | $640K |
| Squarepoint Ops LLC | 0.00% | Add +46.8% | 20,959 | $596K |
| Atle Fund Management AB | 2.17% | Add +23.1% | 193,625 | $585K |
| China Universal Asset Management Co., Ltd. | 0.05% | Reduce -12.4% | 19,742 | $561K |
| Voya Investment Management LLC | 0.00% | New | 19,300 | $549K |
| TD Asset Management Inc | 0.00% | New | 18,000 | $512K |
| Keybank National Association | 0.00% | New | 16,014 | $455K |
| PTM Wealth Management, LLC | 0.25% | No change | 12,900 | $419K |
| Bellevue Group AG | 0.01% | Reduce -28.9% | 14,611 | $416K |
| OMERS ADMINISTRATION Corp | 0.00% | New | 13,900 | $395K |
| Verition Fund Management LLC | 0.00% | No change | 13,828 | $393K |
| Arizona State Retirement System | 0.00% | Add +3.8% | 13,251 | $377K |
| Bank of Montreal | 0.00% | New | 12,388 | $352K |
| Jefferies Financial Group Inc. | 0.00% | New | 12,000 | $341K |
| Letko, Brosseau & Associates Inc. | 0.01% | No change | 11,775 | $335K |
| Teacher Retirement System of Texas | 0.00% | Reduce -7.8% | 10,783 | $307K |
| AQR Capital Management | 0.00% | New | 10,196 | $290K |
| KLP Kapitalforvaltning As | 0.00% | No change | 9,100 | $259K |
| Mesirow Financial Investment Management, Inc. | 0.00% | New | 8,215 | $234K |
| CIBC Private Wealth Group LLC | 0.00% | No change | 7,640 | $217K |
| XTX Topco Ltd | 0.01% | New | 7,579 | $216K |
| Avanza Fonder AB | 0.01% | No change | 7,505 | $213K |
| Marshall Financial Group Inc. | 0.06% | New | 7,500 | $213K |
"% of holder's portfolio" is NAMS's weight in each manager's 13F, not the share of Newamsterdam Pharma Co. NV the manager owns.