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 |
|---|---|---|---|---|---|
| Alps Advisors Inc | 93,596 | $3.00M | 0.01% | +694+0.7% | Added |
| Swedbank AB | 100,900 | $3.23M | 0.00% | +10,000+11.0% | Added |
| Geode Capital Management, LLC | 104,396 | $3.34M | 0.00% | +2,001+2.0% | Added |
| Moody Aldrich Partners LLC | 114,975 | $3.68M | 0.66% | −28,574−19.9% | Reduced |
| ADAR1 Capital Management, LLC | 118,623 | $3.80M | 0.23% | 00.0% | Unchanged |
| Deutsche Bank AG | 124,775 | $3.99M | 0.00% | +812+0.7% | Added |
| Nicholas Investment Partners, LP | 125,136 | $4.01M | 0.29% | −88,283−41.4% | Reduced |
| Vanguard Portfolio Management LLC | 135,031 | $4.32M | 0.00% | +135,031 | New |
| XTX Topco Ltd | 144,759 | $4.63M | 0.08% | +7,267+5.3% | Added |
| DCF Advisers, LLC | 160,600 | $5.14M | 1.94% | 00.0% | Unchanged |
| Jane Street Group, LLC | 165,201 | $5.29M | 0.01% | −256,290−60.8% | Reduced |
| HealthInvest Partners AB | 94,796 | $5.51M | 1.78% | −102,240−51.9% | Reduced |
| Victory Capital Management Inc | 172,663 | $5.53M | 0.00% | +172,663 | New |
| Peregrine Capital Management LLC | 178,493 | $5.71M | 0.21% | +178,493 | New |
| StemPoint Capital LP | 180,658 | $5.78M | 1.11% | +107,552+147.1% | Added |
| Lord, Abbett & Co. LLC | 195,355 | $6.25M | 0.02% | −5,283−2.6% | Reduced |
| Gilder Gagnon Howe & Co LLC | 241,475 | $7.73M | 0.09% | −7,053−2.8% | Reduced |
| Ensign Peak Advisors, Inc | 249,190 | $7.98M | 0.01% | −300,321−54.7% | Reduced |
| ArrowMark Colorado Holdings LLC | 259,524 | $8.31M | 0.22% | −38,553−12.9% | Reduced |
| Marshall Wace, LLP | 264,802 | $8.48M | 0.01% | +264,802 | New |
| First Trust Advisors LP | 267,105 | $8.55M | 0.01% | −12,596−4.5% | Reduced |
| SEB Asset Management AB | 272,654 | $8.73M | 0.04% | +272,654 | New |
| Affinity Asset Advisors, LLC | 275,000 | $8.80M | 0.52% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 285,285 | $9.13M | 0.00% | +20,086+7.6% | Added |
| Eversept Partners, LP | 285,764 | $9.15M | 0.60% | −135,063−32.1% | Reduced |
| Millennium Management LLC | 303,848 | $9.73M | 0.01% | +49,252+19.3% | Added |
| Slate Path Capital LP | 319,000 | $10.2M | 0.15% | 00.0% | Unchanged |
| Decheng Capital LLC | 325,057 | $10.4M | 1.57% | −267,000−45.1% | Reduced |
| Bank of New York Mellon Corp | 378,800 | $12.1M | 0.00% | −13,027−3.3% | Reduced |
| Kennedy Capital Management, Inc. | 408,492 | $13.1M | 0.28% | +235,561+136.2% | Added |
| Handelsbanken Fonder AB | 418,900 | $13.4M | 0.04% | +3,100+0.7% | Added |
| Artia Global Partners LP | 503,936 | $16.1M | 3.64% | 00.0% | Unchanged |
| American Century Companies Inc | 519,455 | $16.6M | 0.01% | −83,946−13.9% | Reduced |
| Morgan Stanley | 555,761 | $17.8M | 0.00% | +22,958+4.3% | Added |
| First Turn Management, LLC | 558,336 | $17.9M | 2.00% | −335,137−37.5% | Reduced |
| Rock Springs Capital Management LP | 588,794 | $18.8M | 1.11% | +31,600+5.7% | Added |
| Logos Global Management LP | 600,000 | $19.2M | 0.99% | +150,000+33.3% | Added |
| Nwi Management LP | 702,000 | $22.5M | 1.37% | 00.0% | Unchanged |
| Citadel Advisors LLC | 712,064 | $22.8M | 0.02% | +76,817+12.1% | Added |
| TimesSquare Capital Management, LLC | 751,988 | $24.1M | 0.41% | −70,312−8.6% | Reduced |
| Woodline Partners LP | 752,308 | $24.1M | 0.09% | +1,038+0.1% | Added |
| Ameriprise Financial Inc | 753,054 | $24.1M | 0.01% | +600,785+394.6% | Added |
| Franklin Resources Inc | 770,160 | $24.7M | 0.01% | +1,040+0.1% | Added |
| UBS Group AG | 794,976 | $25.4M | 0.00% | −104,466−11.6% | Reduced |
| JPMorgan Chase & Co | 884,228 | $25.9M | 0.00% | −115,748−11.6% | Reduced |
| Standard Life Aberdeen plc | 837,005 | $26.8M | 0.04% | +107,521+14.7% | Added |
| Bank of America Corp | 847,089 | $27.1M | 0.00% | +387,698+84.4% | Added |
| BlackRock, Inc. | 886,616 | $28.4M | 0.00% | +36,837+4.3% | Added |
| Cormorant Asset Management, LP | 950,000 | $30.4M | 1.53% | −50,000−5.0% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 957,442 | $30.6M | 0.04% | +780,426+440.9% | Added |
| Castle Hook Partners LP | 1,042,637 | $33.4M | 0.67% | −42,371−3.9% | Reduced |
| Adage Capital Partners GP, L.L.C. | 1,106,631 | $35.4M | 0.05% | −300,000−21.3% | Reduced |
| Alliancebernstein L.P. | 1,199,325 | $42.1M | 0.01% | −101,550−7.8% | Reduced |
| Capital International Investors | 1,441,131 | $46.1M | 0.01% | −621,404−30.1% | Reduced |
| Goldman Sachs Group Inc | 1,946,374 | $62.3M | 0.01% | +220,712+12.8% | Added |
| Maverick Capital LtdSuperinvestorMaverick Capital | 2,186,402 | $70.0M | 0.81% | +292,176+15.4% | Added |
| Westfield Capital Management Co LP | 2,202,913 | $70.5M | 0.30% | +2,202,913 | New |
| Janus Henderson Group PLC | 2,258,984 | $72.3M | 0.03% | −82,739−3.5% | Reduced |
| Medicxi Ventures Management (Jersey) Ltd | 2,674,182 | $85.6M | 8.72% | −195,383−6.8% | Reduced |
| Jennison Associates LLC | 2,750,403 | $88.0M | 0.06% | −738,818−21.2% | Reduced |
| Polar Capital Holdings Plc | 2,831,607 | $90.6M | 0.40% | +55,385+2.0% | Added |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 3,070,146 | $98.3M | 3.35% | 00.0% | Unchanged |
| Viking Global Investors LPSuperinvestorViking Global Investors | 4,203,567 | $134.6M | 0.38% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 4,264,789 | $136.5M | 1.61% | +100,000+2.4% | Added |
| Wellington Management Group LLP | 5,115,818 | $163.8M | 0.03% | +82,643+1.6% | Added |
| Bain Capital Life Sciences Investors, LLC | 7,306,566 | $233.9M | 21.09% | 00.0% | Unchanged |
| FMR LLC | 8,765,811 | $280.6M | 0.01% | +2,352,827+36.7% | Added |
| FCPM III Services B.V. | 9,198,900 | $294.5M | 40.77% | 00.0% | Unchanged |
| Ra Capital Management, L.P. | 9,550,191 | $305.7M | 3.24% | 00.0% | Unchanged |
| Capital World Investors | 11,109,034 | $355.6M | 0.05% | +1,125,034+11.3% | Added |
| Frazier Life Sciences Management, L.P. | 16,943,774 | $542.4M | 13.96% | 00.0% | Unchanged |
| Lisanti Capital Growth, LLC | 0 | $0 | 0.00% | −179,410−100.0% | Sold out |
| Price T Rowe Associates Inc | 0 | $0 | 0.00% | −116,258−100.0% | Sold out |
| JTC Employer Solutions Trusteee Ltd | 0 | $0 | 0.00% | −75,500−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −80,000−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −47,584−100.0% | Sold out |
| Ikarian Capital, LLC | 0 | $0 | 0.00% | −45,830−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −32,391−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −28,665−100.0% | Sold out |
| Yarbrough Capital, LLC | 0 | $0 | 0.00% | −23,960−100.0% | Sold out |
| PEAK6 LLC | 0 | $0 | 0.00% | −20,749−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −20,459−100.0% | Sold out |
| TD Asset Management Inc | 0 | $0 | 0.00% | −13,180−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| Polen Capital Management LLC | 0 | $0 | 0.00% | −11,239−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −9,798−100.0% | Sold out |
| Jaffetilchin Investment Partners, LLC | 0 | $0 | 0.00% | −9,218−100.0% | Sold out |
| Virginia Retirement Systems Et Al | 0 | $0 | 0.00% | −7,200−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −6,687−100.0% | Sold out |
| Avanza Fonder AB | 0 | $0 | 0.00% | −6,566−100.0% | Sold out |
| Brinker Capital Investments, LLC | 0 | $0 | 0.00% | −6,545−100.0% | Sold out |
| Simon Quick Advisors, LLC | 0 | $0 | 0.00% | −5,763−100.0% | Sold out |
| Seven Fleet Capital Management LP | 0 | $0 | 0.00% | −4,000−100.0% | Sold out |
| Persistent Asset Partners Ltd | 0 | $0 | 0.00% | −3,948−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −3,692−100.0% | Sold out |
| NBC Securities, Inc. | 0 | $0 | 0.00% | −2,457−100.0% | Sold out |
| Wolverine Asset Management LLC | 0 | $0 | 0.00% | −2,012−100.0% | Sold out |
| Navalign, LLC | 0 | $0 | 0.00% | −1,315−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −1,313−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −647−100.0% | Sold out |