NEWAMSTERDAM PHARMA COMPANY (NAMSW) Institutional Ownership Changes & 13F Activity
NEWAMSTERDAM PHARMA COMPANY (NAMSW). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Wellington Management Group Llp, Bain Capital Life Sciences Investors, Llc, Orbis Allan Gray Ltd, Ameriprise Financial Inc, and Price T Rowe Associates Inc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Envestnet Asset Management Inc | Sell | -30 | -0.2% | 15,520 | $525.97K | Q2 2026 | Sep 23, 2026 |
| State Street Corp | Buy | +52,125 | +82.6% | 115,215 | $3.90M | Q2 2026 | Sep 22, 2026 |
| Manufacturers Life Insurance Company, The | Buy | +84,930 | +751.5% | 96,232 | $3.26M | Q2 2026 | Sep 09, 2026 |
| Citadel Advisors Llc | Sell | -66,259 | -9.3% | 645,805 | $21.89M | Q2 2026 | Sep 02, 2026 |
| California State Teachers Retirement System | Buy | +13,089 | +24.1% | 67,418 | $2.28M | Q2 2026 | Aug 24, 2026 |
| Palo Alto Investors Lp | Buy | +44,359 | — | 44,359 | $1.50M | Q2 2026 | Aug 19, 2026 |
| Jefferies Financial Group Inc. | Buy | +122,728 | — | 122,728 | $4.16M | Q2 2026 | Aug 17, 2026 |
| Wellington Management Group Llp | Sell | -4,897,069 | -95.7% | 218,749 | $7.41M | Q2 2026 | Aug 14, 2026 |
| Bain Capital Life Sciences Investors, Llc | Sell | -3,500,000 | -47.9% | 3,806,566 | $129.00M | Q2 2026 | Aug 14, 2026 |
| Orbis Allan Gray Ltd | Buy | +1,747,627 | — | 1,747,627 | $59.23M | Q2 2026 | Aug 14, 2026 |
| Ameriprise Financial Inc | Buy | +1,253,549 | — | 1,253,549 | $42.48M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Buy | +1,167,357 | — | 1,167,357 | $39.56M | Q2 2026 | Aug 14, 2026 |
| Frazier Life Sciences Management, L.P. | Buy | +1,145,128 | +6.8% | 18,088,902 | $613.03M | Q2 2026 | Aug 14, 2026 |
| Polar Capital Holdings Plc | Sell | -1,107,089 | -39.1% | 1,724,518 | $58.44M | Q2 2026 | Aug 14, 2026 |
| Maverick Capital Ltd | Buy | +1,081,400 | +49.5% | 3,267,802 | $110.75M | Q2 2026 | Aug 14, 2026 |
| Susquehanna International Group, Llp | Buy | +736,502 | +4131.8% | 754,327 | $25.56M | Q2 2026 | Aug 14, 2026 |
| Fcpm Iii Services B.V. | Sell | -708,547 | -7.7% | 8,490,353 | $287.74M | Q2 2026 | Aug 14, 2026 |
| Nwi Management Lp | Buy | +702,000 | — | 702,000 | $23.79M | Q2 2026 | Aug 14, 2026 |
| Adage Capital Partners Gp, L.L.C. | Sell | -556,631 | -50.3% | 550,000 | $18.64M | Q2 2026 | Aug 14, 2026 |
| Cormorant Asset Management, Lp | Sell | -450,000 | -47.4% | 500,000 | $16.95M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Sell | -401,463 | -20.6% | 1,544,911 | $52.36M | Q2 2026 | Aug 14, 2026 |
| Hrt Financial Lp | Buy | +349,843 | — | 349,843 | $11.86M | Q2 2026 | Aug 14, 2026 |
| Castle Hook Partners Lp | Buy | +328,368 | +31.5% | 1,371,005 | $46.46M | Q2 2026 | Aug 14, 2026 |
| Jane Street Group, Llc | Buy | +309,035 | +187.1% | 474,236 | $16.07M | Q2 2026 | Aug 14, 2026 |
| Exoduspoint Capital Management, Lp | Buy | +304,334 | — | 304,334 | $10.31M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Buy | +197,766 | +65.1% | 501,614 | $17.00M | Q2 2026 | Aug 14, 2026 |
| Point72 Asset Management, L.P. | Buy | +168,901 | — | 168,901 | $5.72M | Q2 2026 | Aug 14, 2026 |
| Decheng Capital Llc | Sell | -148,170 | -45.6% | 176,887 | $5.99M | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +120,561 | — | 120,561 | $4.09M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Sell | -111,606 | -13.2% | 735,483 | $24.93M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about NAMSW activity
Which institutional owners are buying NAMSW?
Institutional owners buying NAMSW include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in NAMSW activity?
"Buy" means an investor increased their reported position in NAMSW compared to the prior reporting period. This reflects growing exposure to NEWAMSTERDAM PHARMA COMPANY (NAMSW) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in NAMSW increasing?
Institutional interest in NAMSW can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.