Andreas Halvorsen's NAMS Position Overview
Andreas Halvorsen (via Viking Global Investors Lp) currently holds 4.2 M shares of NewAmsterdam Pharma Company N.V. (NAMS) worth $134.56 M, representing 0.38% of the portfolio. First purchased in 2022-Q4, this medium-term investment has been held for 14 quarters.
Based on 13F filings, Andreas Halvorsen has maintained a strategic position in NAMS, demonstrating sustained confidence in this investment. Largest addition occurred in Q2 2023, adding 2.61 M shares. Largest reduction occurred in Q4 2025, reducing 2.27 M shares.
Analysis based on 13F filings available since 2013 Q2
Andreas Halvorsen's NewAmsterdam Pharma Company NV (NAMS) Holding Value Over Time
Track share changes against reported price movement
Quarterly NewAmsterdam Pharma Company NV (NAMS) Trades by Andreas Halvorsen
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -2.27 M | Reduce 35.09% | 4.2 M | $35.08 |
| Q3 2025 | -503,000 | Reduce 7.21% | 6.48 M | $28.44 |
| Q4 2024 | -1.05 M | Reduce 13.04% | 6.98 M | $25.70 |
| Q3 2023 | +1.5 M | Add 22.99% | 8.02 M | $9.25 |
| Q2 2023 | +2.61 M | Add 66.62% | 6.52 M | $11.89 |
| Q1 2023 | +162,042 | Add 4.32% | 3.92 M | $13.44 |
| Q4 2022 | +3.75 M | New Buy | 3.75 M | $10.52 |
Andreas Halvorsen's NewAmsterdam Pharma Company NV Investment FAQs
Andreas Halvorsen first purchased NewAmsterdam Pharma Company N.V. (NAMS) in Q4 2022, acquiring 3,753,828 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Andreas Halvorsen has held NewAmsterdam Pharma Company N.V. (NAMS) for 14 quarters since Q4 2022.
Andreas Halvorsen's largest addition to NewAmsterdam Pharma Company N.V. (NAMS) was in Q4 2022, adding 3,753,828 shares worth $39.49 M.
According to the latest 13F filing for Q1 2026, Andreas Halvorsen's firm, Viking Global Investors Lp, owns 4,203,567 shares of NewAmsterdam Pharma Company N.V. (NAMS), valued at approximately $134.56 M.
As of the Q1 2026 filing, NewAmsterdam Pharma Company N.V. (NAMS) represents approximately 0.38% of Andreas Halvorsen's publicly disclosed stock portfolio, making it one of their key holdings.
Andreas Halvorsen's peak holding in NewAmsterdam Pharma Company N.V. (NAMS) was 8,024,565 shares, as reported at the end of Q3 2023.