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.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Envestnet Asset Management IncSell-30-0.2%15,520$525.97KQ2 2026Sep 23, 2026
State Street CorpBuy+52,125+82.6%115,215$3.90MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheBuy+84,930+751.5%96,232$3.26MQ2 2026Sep 09, 2026
Citadel Advisors LlcSell-66,259-9.3%645,805$21.89MQ2 2026Sep 02, 2026
California State Teachers Retirement SystemBuy+13,089+24.1%67,418$2.28MQ2 2026Aug 24, 2026
Palo Alto Investors LpBuy+44,359—44,359$1.50MQ2 2026Aug 19, 2026
Jefferies Financial Group Inc.Buy+122,728—122,728$4.16MQ2 2026Aug 17, 2026
Wellington Management Group LlpSell-4,897,069-95.7%218,749$7.41MQ2 2026Aug 14, 2026
Bain Capital Life Sciences Investors, LlcSell-3,500,000-47.9%3,806,566$129.00MQ2 2026Aug 14, 2026
Orbis Allan Gray LtdBuy+1,747,627—1,747,627$59.23MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+1,253,549—1,253,549$42.48MQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+1,167,357—1,167,357$39.56MQ2 2026Aug 14, 2026
Frazier Life Sciences Management, L.P.Buy+1,145,128+6.8%18,088,902$613.03MQ2 2026Aug 14, 2026
Polar Capital Holdings PlcSell-1,107,089-39.1%1,724,518$58.44MQ2 2026Aug 14, 2026
Maverick Capital LtdBuy+1,081,400+49.5%3,267,802$110.75MQ2 2026Aug 14, 2026
Susquehanna International Group, LlpBuy+736,502+4131.8%754,327$25.56MQ2 2026Aug 14, 2026
Fcpm Iii Services B.V.Sell-708,547-7.7%8,490,353$287.74MQ2 2026Aug 14, 2026
Nwi Management LpBuy+702,000—702,000$23.79MQ2 2026Aug 14, 2026
Adage Capital Partners Gp, L.L.C.Sell-556,631-50.3%550,000$18.64MQ2 2026Aug 14, 2026
Cormorant Asset Management, LpSell-450,000-47.4%500,000$16.95MQ2 2026Aug 14, 2026
Goldman Sachs Group IncSell-401,463-20.6%1,544,911$52.36MQ2 2026Aug 14, 2026
Hrt Financial LpBuy+349,843—349,843$11.86MQ2 2026Aug 14, 2026
Castle Hook Partners LpBuy+328,368+31.5%1,371,005$46.46MQ2 2026Aug 14, 2026
Jane Street Group, LlcBuy+309,035+187.1%474,236$16.07MQ2 2026Aug 14, 2026
Exoduspoint Capital Management, LpBuy+304,334—304,334$10.31MQ2 2026Aug 14, 2026
Millennium Management LlcBuy+197,766+65.1%501,614$17.00MQ2 2026Aug 14, 2026
Point72 Asset Management, L.P.Buy+168,901—168,901$5.72MQ2 2026Aug 14, 2026
Decheng Capital LlcSell-148,170-45.6%176,887$5.99MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Buy+120,561—120,561$4.09MQ2 2026Aug 14, 2026
Bank Of America CorpSell-111,606-13.2%735,483$24.93MQ2 2026Aug 14, 2026
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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.