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 4 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
Q4 2025 vs. Q3 2025
How the institutions holding NewAmsterdam Pharma Co N.V. changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Of which not filed for Q4 2025 | Q4 2025 | Change |
|---|---|---|---|---|
| Holders | 137 | 2 | 187 | +52 |
| Shares | 120.6M | 204.3K | 119.3M | −1.05M (−0.9%) |
| Value | $3.43B | $5.81M | $4.19B | +$762.8M (+22.3%) |
2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (61)
Institutions that held NewAmsterdam Pharma Co N.V. at the end of Q4 2025 but not at the end of Q3 2025.
Sold out (9)
Institutions that held NewAmsterdam Pharma Co N.V. at the end of Q3 2025 and filed for Q4 2025 without it.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Siren, L.L.C. | 765,705 | $21.8M |
| Saturn V Capital Management LLC | 153,147 | $4.36M |
| Readystate Asset Management LP | 34,353 | $977.0K |
| Omers Administration Corp | 13,900 | $395.3K |
| Bank of Montreal | 12,388 | $352.3K |
| Simplex Trading, LLC | 3,372 | $95.0K |
| Mather Group, LLC. | 1,000 | $28.4K |
| SRS Capital Advisors, Inc. | 174 | $4.95K |
| Clearstead Advisors, LLC | 88 | $2.50K |
Not filed for Q4 2025 yet (2)
Institutions that held NewAmsterdam Pharma Co N.V. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| AXA Investment Managers S.A. | 196,782 | $5.60M |
| Marshall Financial Group Inc | 7,500 | $213.3K |