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, Q1 2026
Institutional positions in NewAmsterdam Pharma Co N.V. as of Mar 31, 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
- 171
- −12 vs. Q4 2025
- Shares held
- 123.7M
- +4.50M (+3.8%) vs. Q4 2025
- Total value
- $3.96B
- −$218.6M (−5.2%) vs. Q4 2025
- New holders
- 24
- 68 more added
- Sold out
- 36
- 49 more reduced
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding NewAmsterdam Pharma Co N.V.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 16,943,774 | $542.4M | 13.96% | 00.0% | Unchanged |
| Capital World Investors | 11,109,034 | $355.6M | 0.05% | +1,125,034+11.3% | Added |
| Ra Capital Management, L.P. | 9,550,191 | $305.7M | 3.24% | 00.0% | Unchanged |
| FCPM III Services B.V. | 9,198,900 | $294.5M | 40.77% | 00.0% | Unchanged |
| FMR LLC | 8,765,811 | $280.6M | 0.01% | +2,352,827+36.7% | Added |
| Bain Capital Life Sciences Investors, LLC | 7,306,566 | $233.9M | 21.09% | 00.0% | Unchanged |
| Wellington Management Group LLP | 5,115,818 | $163.8M | 0.03% | +82,643+1.6% | Added |
| Deerfield Management Company, L.P. (Series C) | 4,264,789 | $136.5M | 1.61% | +100,000+2.4% | Added |
| Viking Global Investors LPSuperinvestorViking Global Investors | 4,203,567 | $134.6M | 0.38% | 00.0% | Unchanged |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 3,070,146 | $98.3M | 3.35% | 00.0% | Unchanged |
| Polar Capital Holdings Plc | 2,831,607 | $90.6M | 0.40% | +55,385+2.0% | Added |
| Jennison Associates LLC | 2,750,403 | $88.0M | 0.06% | −738,818−21.2% | Reduced |
| Medicxi Ventures Management (Jersey) Ltd | 2,674,182 | $85.6M | 8.72% | −195,383−6.8% | Reduced |
| Janus Henderson Group PLC | 2,258,984 | $72.3M | 0.03% | −82,739−3.5% | Reduced |
| Westfield Capital Management Co LP | 2,202,913 | $70.5M | 0.30% | +2,202,913 | New |
| Maverick Capital LtdSuperinvestorMaverick Capital | 2,186,402 | $70.0M | 0.81% | +292,176+15.4% | Added |
| Goldman Sachs Group Inc | 1,946,374 | $62.3M | 0.01% | +220,712+12.8% | Added |
| Capital International Investors | 1,441,131 | $46.1M | 0.01% | −621,404−30.1% | Reduced |
| Alliancebernstein L.P. | 1,199,325 | $42.1M | 0.01% | −101,550−7.8% | Reduced |
| Adage Capital Partners GP, L.L.C. | 1,106,631 | $35.4M | 0.05% | −300,000−21.3% | Reduced |
| Castle Hook Partners LP | 1,042,637 | $33.4M | 0.67% | −42,371−3.9% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 957,442 | $30.6M | 0.04% | +780,426+440.9% | Added |
| Cormorant Asset Management, LP | 950,000 | $30.4M | 1.53% | −50,000−5.0% | Reduced |
| BlackRock, Inc. | 886,616 | $28.4M | 0.00% | +36,837+4.3% | Added |
| Bank of America Corp | 847,089 | $27.1M | 0.00% | +387,698+84.4% | Added |
| Standard Life Aberdeen plc | 837,005 | $26.8M | 0.04% | +107,521+14.7% | Added |
| JPMorgan Chase & Co | 884,228 | $25.9M | 0.00% | −115,748−11.6% | Reduced |
| UBS Group AG | 794,976 | $25.4M | 0.00% | −104,466−11.6% | Reduced |
| Franklin Resources Inc | 770,160 | $24.7M | 0.01% | +1,040+0.1% | Added |
| Ameriprise Financial Inc | 753,054 | $24.1M | 0.01% | +600,785+394.6% | Added |
| Woodline Partners LP | 752,308 | $24.1M | 0.09% | +1,038+0.1% | Added |
| TimesSquare Capital Management, LLC | 751,988 | $24.1M | 0.41% | −70,312−8.6% | Reduced |
| Citadel Advisors LLC | 712,064 | $22.8M | 0.02% | +76,817+12.1% | Added |
| Nwi Management LP | 702,000 | $22.5M | 1.37% | 00.0% | Unchanged |
| Logos Global Management LP | 600,000 | $19.2M | 0.99% | +150,000+33.3% | Added |
| Rock Springs Capital Management LP | 588,794 | $18.8M | 1.11% | +31,600+5.7% | Added |
| First Turn Management, LLC | 558,336 | $17.9M | 2.00% | −335,137−37.5% | Reduced |
| Morgan Stanley | 555,761 | $17.8M | 0.00% | +22,958+4.3% | Added |
| American Century Companies Inc | 519,455 | $16.6M | 0.01% | −83,946−13.9% | Reduced |
| Artia Global Partners LP | 503,936 | $16.1M | 3.64% | 00.0% | Unchanged |
| Handelsbanken Fonder AB | 418,900 | $13.4M | 0.04% | +3,100+0.7% | Added |
| Kennedy Capital Management, Inc. | 408,492 | $13.1M | 0.28% | +235,561+136.2% | Added |
| Bank of New York Mellon Corp | 378,800 | $12.1M | 0.00% | −13,027−3.3% | Reduced |
| Decheng Capital LLC | 325,057 | $10.4M | 1.57% | −267,000−45.1% | Reduced |
| Slate Path Capital LP | 319,000 | $10.2M | 0.15% | 00.0% | Unchanged |
| Millennium Management LLC | 303,848 | $9.73M | 0.01% | +49,252+19.3% | Added |
| Eversept Partners, LP | 285,764 | $9.15M | 0.60% | −135,063−32.1% | Reduced |
| UBS Asset Management Americas Inc | 285,285 | $9.13M | 0.00% | +20,086+7.6% | Added |
| Affinity Asset Advisors, LLC | 275,000 | $8.80M | 0.52% | 00.0% | Unchanged |
| SEB Asset Management AB | 272,654 | $8.73M | 0.04% | +272,654 | New |
| First Trust Advisors LP | 267,105 | $8.55M | 0.01% | −12,596−4.5% | Reduced |
| Marshall Wace, LLP | 264,802 | $8.48M | 0.01% | +264,802 | New |
| ArrowMark Colorado Holdings LLC | 259,524 | $8.31M | 0.22% | −38,553−12.9% | Reduced |
| Ensign Peak Advisors, Inc | 249,190 | $7.98M | 0.01% | −300,321−54.7% | Reduced |
| Gilder Gagnon Howe & Co LLC | 241,475 | $7.73M | 0.09% | −7,053−2.8% | Reduced |
| Lord, Abbett & Co. LLC | 195,355 | $6.25M | 0.02% | −5,283−2.6% | Reduced |
| StemPoint Capital LP | 180,658 | $5.78M | 1.11% | +107,552+147.1% | Added |
| Peregrine Capital Management LLC | 178,493 | $5.71M | 0.21% | +178,493 | New |
| Victory Capital Management Inc | 172,663 | $5.53M | 0.00% | +172,663 | New |
| HealthInvest Partners AB | 94,796 | $5.51M | 1.78% | −102,240−51.9% | Reduced |
| Jane Street Group, LLC | 165,201 | $5.29M | 0.01% | −256,290−60.8% | Reduced |
| DCF Advisers, LLC | 160,600 | $5.14M | 1.94% | 00.0% | Unchanged |
| XTX Topco Ltd | 144,759 | $4.63M | 0.08% | +7,267+5.3% | Added |
| Vanguard Portfolio Management LLC | 135,031 | $4.32M | 0.00% | +135,031 | New |
| Nicholas Investment Partners, LP | 125,136 | $4.01M | 0.29% | −88,283−41.4% | Reduced |
| Deutsche Bank AG | 124,775 | $3.99M | 0.00% | +812+0.7% | Added |
| ADAR1 Capital Management, LLC | 118,623 | $3.80M | 0.23% | 00.0% | Unchanged |
| Moody Aldrich Partners LLC | 114,975 | $3.68M | 0.66% | −28,574−19.9% | Reduced |
| Geode Capital Management, LLC | 104,396 | $3.34M | 0.00% | +2,001+2.0% | Added |
| Swedbank AB | 100,900 | $3.23M | 0.00% | +10,000+11.0% | Added |
| Alps Advisors Inc | 93,596 | $3.00M | 0.01% | +694+0.7% | Added |
| Swiss National Bank | 88,900 | $2.85M | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 84,385 | $2.70M | 0.00% | +13,103+18.4% | Added |
| Catalio Capital Management, LP | 83,554 | $2.67M | 0.56% | +83,554 | New |
| State Street Corp | 63,090 | $2.02M | 0.00% | −5,433−7.9% | Reduced |
| Walleye Capital LLC | 58,434 | $1.87M | 0.01% | −37,827−39.3% | Reduced |
| SEI Investments Co | 55,637 | $1.78M | 0.00% | +14,597+35.6% | Added |
| California State Teachers Retirement System | 54,329 | $1.74M | 0.00% | +14,053+34.9% | Added |
| Fred Alger Management, LLC | 54,195 | $1.73M | 0.01% | +6,660+14.0% | Added |
| Mizuho Markets Cayman LP | 52,227 | $1.67M | 0.09% | +4,348+9.1% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 46,936 | $1.50M | 0.00% | −16,366−25.9% | Reduced |
| China Universal Asset Management Co., Ltd. | 43,703 | $1.40M | 0.11% | +17,226+65.1% | Added |
| Squarepoint Ops LLC | 43,021 | $1.38M | 0.00% | +12,202+39.6% | Added |
| BNP Paribas Arbitrage, SA | 37,450 | $1.20M | 0.00% | +12,316+49.0% | Added |
| Ishara Investments LP | 36,900 | $1.18M | 1.19% | +6,900+23.0% | Added |
| Pavaki Capital Management LLC | 36,600 | $1.17M | 0.82% | +36,600 | New |
| Knights of Columbus Asset Advisors LLC | 36,190 | $1.16M | 0.07% | +3,707+11.4% | Added |
| Legal & General Group Plc | 33,476 | $1.07M | 0.00% | −7,475−18.3% | Reduced |
| Northern Trust Corp | 32,218 | $1.03M | 0.00% | +81+0.3% | Added |
| Stifel Financial Corp | 29,221 | $935.2K | 0.00% | +29,221 | New |
| Vanguard Asset Management, Ltd | 28,146 | $901.0K | 0.00% | +28,146 | New |
| Headlands Technologies LLC | 27,676 | $885.9K | 0.10% | +27,676 | New |
| Bellevue Group AG | 27,661 | $885.4K | 0.02% | −8,675−23.9% | Reduced |
| Boothbay Fund Management, LLC | 27,336 | $875.0K | 0.02% | −6,583−19.4% | Reduced |
| Voya Investment Management LLC | 27,050 | $865.9K | 0.00% | −1,825−6.3% | Reduced |
| Eleva Capital SAS | 25,721 | $823.3K | 0.24% | +25,721 | New |
| Lifetime Wealth Management P.C. | 23,500 | $752.2K | 0.43% | −35,750−60.3% | Reduced |
| Toroso Investments, LLC | 22,458 | $718.9K | 0.00% | +22,458 | New |
| CenterBook Partners LP | 22,254 | $712.4K | 0.04% | +10,194+84.5% | Added |
| Barclays PLC | 21,780 | $697.2K | 0.00% | +16,128+285.4% | Added |