Newamsterdam Pharma Co. NVNAMS
13F holders, Q4 2025 (December 31)187holders +50
51new positions
9sold out
6famous investors
$35.08avg. 13F price*
At the end of Q4 2025, 187 institutions reported holding Newamsterdam Pharma Co. NV (NAMS) in their 13F filings, up 50 from Q3 2025. 51 opened new positions and 9 sold out. The largest holders were Frazier Life Sciences Management, L.P. ($594.4M), Capital World Investors ($350.2M) and Ra Capital Management, L.P. ($335.0M). 6 famous investors held it, including Stanley Druckenmiller (2.6% of Duquesne Family Office's portfolio), Lee Ainslie (0.7% of Maverick Capital's portfolio) and Andreas Halvorsen (0.4% 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 Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 51 | $195.1M |
| Exits | 9 | $28.0M |
All 13F filers, Q3 2025 → Q4 2025: 13,038,232 shares bought and 14,244,597 shares sold, net −1,206,365 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 187 holders
| Frazier Life Sciences Management, L.P. | 16.01% | Add +1.4% | 16,943,774 | $594.4M |
| Capital World Investors | 0.05% | Add +1.6% | 9,984,000 | $350.2M |
| Ra Capital Management, L.P. | 3.44% | Reduce -5.8% | 9,550,191 | $335.0M |
| FCPM III Services B.V. | 42.30% | Reduce -0.1% | 9,198,900 | $322.7M |
| Bain Capital Life Sciences Investors, LLC | 19.67% | Reduce -31.8% | 7,306,566 | $256.3M |
| FMR LLC | 0.01% | Add +15.9% | 6,412,984 | $225.0M |
| Wellington Management Group LLP | 0.03% | Add +25.2% | 5,033,175 | $176.6M |
| Viking Global Investors | 0.39% | Reduce -35.1% | 4,203,567 | $147.5M |
| Deerfield Management Company, L.P. | 2.14% | Reduce -2.4% | 4,164,789 | $146.1M |
| Jennison Associates LLC | 0.07% | Reduce -16.9% | 3,489,221 | $122.4M |
| Duquesne Family Office | 2.55% | Add +59.6% | 3,070,146 | $107.7M |
| Medicxi Ventures Management (Jersey) Ltd | 12.06% | No change | 2,869,565 | $100.7M |
| Polar Capital Holdings Plc | 0.45% | Reduce -4.7% | 2,776,222 | $97.4M |
| Janus Henderson Group PLC | 0.04% | Add +10.6% | 2,341,723 | $82.3M |
| Capital International Investors | 0.01% | No change | 2,062,535 | $72.4M |
| Maverick Capital | 0.71% | Add +25.9% | 1,894,226 | $66.4M |
| Goldman Sachs Group Inc. | 0.01% | Add +96.0% | 1,725,662 | $60.5M |
| Adage Capital Partners Gp, L.L.C. | 0.07% | Reduce -45.4% | 1,406,631 | $49.3M |
| Alliancebernstein L.P. | 0.01% | Reduce -39.3% | 1,300,875 | $45.6M |
| Castle Hook Partners LP | 0.55% | New | 1,085,008 | $38.1M |
| Cormorant Asset Management, LP | 1.99% | Reduce -54.0% | 1,000,000 | $35.1M |
| JPMorgan Chase & Co. | 0.00% | Reduce -23.2% | 999,976 | $35.1M |
| UBS Group AG | 0.01% | Add +17.0% | 899,442 | $31.6M |
| First Turn Management, LLC | 3.58% | Add +24.6% | 893,473 | $31.3M |
| BlackRock, Inc. | 0.00% | Add +36.5% | 849,779 | $29.8M |
| TimesSquare Capital Management, LLC | 0.43% | Reduce -1.8% | 822,300 | $28.8M |
| Franklin Resources Inc. | 0.01% | Add +89.5% | 769,120 | $27.0M |
| Woodline Partners LP | 0.10% | Reduce -35.1% | 751,270 | $26.4M |
| Pictet Asset Management Holding SA | 0.03% | Reduce -42.3% | 746,122 | $26.2M |
| Aberdeen Group plc | 0.04% | Add +10.2% | 729,484 | $25.6M |
| Nwi Management LP | 1.50% | New | 702,000 | $24.6M |
| Citadel Advisors | 0.02% | Add +207.7% | 635,247 | $22.3M |
| American Century Companies Inc. | 0.01% | Reduce -3.4% | 603,401 | $21.2M |
| Decheng Capital LLC | 2.79% | Reduce -9.9% | 592,057 | $20.8M |
| Rock Springs Capital Management LP | 1.01% | Reduce -6.5% | 557,194 | $19.5M |
| Ensign Peak Advisors, Inc | 0.03% | New | 549,511 | $19.3M |
| Morgan Stanley | 0.00% | Reduce -64.4% | 532,803 | $18.7M |
| Artia Global Partners LP | 2.84% | Add +158.6% | 503,936 | $17.7M |
| Bank of America Corp. | 0.00% | Reduce -2.7% | 459,391 | $16.1M |
| Logos Global Management LP | 1.05% | New | 450,000 | $15.8M |
| Jane Street Group, LLC | 0.02% | New | 421,491 | $14.8M |
| Eversept Partners, LP | 0.83% | Reduce -13.9% | 420,827 | $14.8M |
| Handelsbanken Fonder AB | 0.04% | Add +2.5% | 415,800 | $14.6M |
| Bank of New York Mellon Corp | 0.00% | Add +17.7% | 391,827 | $13.7M |
| Slate Path Capital LP | 0.15% | No change | 319,000 | $11.2M |
| ArrowMark Colorado Holdings LLC | 0.23% | Reduce -4.2% | 298,077 | $10.5M |
| First Trust Advisors LP | 0.01% | New | 279,701 | $9.8M |
| Affinity Asset Advisors, LLC | 0.72% | No change | 275,000 | $9.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | New | 265,199 | $9.3M |
| Millennium Management | 0.01% | New | 254,596 | $8.9M |
| Gilder Gagnon Howe & Co. LLC | 0.09% | Add +583.1% | 248,528 | $8.7M |
| Nicholas Investment Partners, LP | 0.62% | Add +20.2% | 213,419 | $7.5M |
| Lord, Abbett & Co. LLC | 0.02% | New | 200,638 | $7.0M |
| Atle Fund Management AB | 2.21% | Add +1.8% | 197,036 | $6.9M |
| Susquehanna International Group, LLP | 0.01% | Add +28.9% | 195,635 | $6.9M |
| Lisanti Capital Growth, LLC | 1.49% | Add +278.1% | 179,410 | $6.3M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.01% | New | 177,016 | $6.2M |
| Vanguard Group Inc. | 0.00% | Add +0.3% | 172,956 | $6.1M |
| Kennedy Capital Management LLC | 0.13% | Add +17.9% | 172,931 | $6.1M |
| DCF Advisers, LLC | 1.86% | Reduce -8.4% | 160,600 | $5.6M |
| Ameriprise Financial Inc. | 0.00% | Add +4.8% | 152,269 | $5.3M |
| Moody Aldrich Partners LLC | 0.94% | New | 143,549 | $5.0M |
| XTX Topco Ltd | 0.13% | Add +1714.1% | 137,492 | $4.8M |
| Deutsche Bank AG | 0.00% | Add +81.2% | 123,963 | $4.3M |
| ADAR1 Capital Management, LLC | 0.31% | Add +3.7% | 118,623 | $4.2M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -16.0% | 116,258 | $4.1M |
| Geode Capital Management, LLC | 0.00% | Add +0.4% | 102,395 | $3.6M |
| Walleye Capital LLC | 0.02% | New | 96,261 | $3.4M |
| Alps Advisors Inc. | 0.02% | New | 92,902 | $3.3M |
| Swedbank AB | 0.00% | New | 90,900 | $3.2M |
| Swiss National Bank | 0.00% | Add +2.1% | 88,900 | $3.1M |
| JTC Employer Solutions Trustee Ltd | 0.20% | New | 75,500 | $3.0M |
| Legato Capital Management LLC | 0.25% | Add +258.7% | 83,833 | $2.9M |
| Centiva Capital, LP | 0.17% | New | 80,000 | $2.8M |
| Stempoint Capital LP | 0.44% | Reduce -51.5% | 73,106 | $2.6M |
| Russell Investments Group, Ltd. | 0.00% | New | 71,282 | $2.5M |
| State Street Corp. | 0.00% | Add +7.4% | 68,523 | $2.4M |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 0.00% | New | 63,302 | $2.2M |
| Lifetime Wealth Management P.C. | 1.32% | — | 59,250 | $2.1M |
| Mizuho Markets Cayman LP | 0.08% | New | 47,879 | $1.7M |
| Jain Global LLC | 0.02% | New | 47,584 | $1.7M |
| Fred Alger Management, LLC | 0.01% | Add +15.2% | 47,535 | $1.7M |
| Aquatic Capital Management LLC | 0.05% | New | 45,989 | $1.6M |
| Ikarian Capital, LLC | 0.21% | Reduce -57.1% | 45,830 | $1.6M |
| Sei Investments Co. | 0.00% | New | 41,040 | $1.4M |
| Legal & General Group Plc | 0.00% | Reduce -10.5% | 40,951 | $1.4M |
| California State Teachers Retirement System | 0.00% | Reduce -15.8% | 40,276 | $1.4M |
| Bellevue Group AG | 0.02% | Add +148.7% | 36,336 | $1.3M |
| HighVista Strategies LLC | 0.32% | Add +11.8% | 35,586 | $1.2M |
| Boothbay Fund Management, LLC | 0.03% | Reduce -16.7% | 33,919 | $1.2M |
| Knights of Columbus Asset Advisors LLC | 0.06% | Reduce -3.4% | 32,483 | $1.1M |
| Verition Fund Management LLC | 0.01% | Add +134.2% | 32,391 | $1.1M |
| Northern Trust Corp. | 0.00% | Reduce -3.5% | 32,137 | $1.1M |
| Squarepoint Ops LLC | 0.00% | Add +47.0% | 30,819 | $1.1M |
| Ishara Investments LP | 1.22% | — | 30,000 | $1.1M |
| Voya Investment Management LLC | 0.00% | Add +49.6% | 28,875 | $1.0M |
| WINTON GROUP Ltd | 0.03% | New | 28,665 | $1.0M |
| Twinbeech Capital LP | 0.07% | New | 27,400 | $961K |
| New York State Common Retirement Fund | 0.00% | No change | 26,680 | $936K |
| China Universal Asset Management Co., Ltd. | 0.07% | Add +34.1% | 26,477 | $929K |
"% of holder's portfolio" is NAMS's weight in each manager's 13F, not the share of Newamsterdam Pharma Co. NV the manager owns.