WEST PHARMACEUTICAL SERVICES (WST) Institutional Ownership Changes & 13F Activity

WEST PHARMACEUTICAL SERVICES (WST). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Viking Global Investors, Renaissance Technologies LLC, Sequoia Financial Advisors, Hillman Value Fund, and Parnassus Endeavor Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2023Durable Capital PartnersSell-63,3391,138,730$400,969,608
Q4 2023Sequoia Financial AdvisorsBuy7761,661$584,931
Q3 2023Durable Capital PartnersSell-76,5061,202,069$451,028,309
Q3 2023Sequoia Financial AdvisorsBuy7885$332,124
Q2 2023Durable Capital PartnersBuy36,7571,278,575$489,016,580
Q2 2023Sequoia Financial AdvisorsBuy8878$335,809
Q1 2023Durable Capital PartnersBuy128,1341,241,818$430,252,682
Q1 2023Sequoia Financial AdvisorsBuy870870$301,429
Q4 2022Renaissance Technologies LLCBuy95,011294,700$69,358
Q4 2022Durable Capital PartnersSell-65,7631,113,684$262,105,529
Q3 2022Durable Capital PartnersBuy185,4111,179,447$290,238
Q3 2022Renaissance Technologies LLCSell-2,311199,689$49,139
Q2 2022Durable Capital PartnersBuy245,705994,036$300,567
Q2 2022Renaissance Technologies LLCBuy197,100202,000$61,079
Q2 2022ARK InvestSell-19417$129
Q1 2022Durable Capital PartnersSell-110,879748,331$307,347
Q1 2022Renaissance Technologies LLCBuy3,3004,900$2,012
Q1 2022ARK InvestBuy436436$179
Q4 2021Renaissance Technologies LLCSell-42,6001,600$750
Q3 2021Durable Capital PartnersSell-92,053859,210$364,769
Q2 2021Durable Capital PartnersSell-17,362951,263$341,599
Q4 2020Durable Capital PartnersSell-137,493968,625$274,421
Q4 2020Renaissance Technologies LLCSell-16,90044,200$12,522
Q3 2020Durable Capital PartnersSell-135,0731,106,118$304,072
Q2 2020Renaissance Technologies LLCSell-304,10061,100$13,880
Q2 2020Durable Capital PartnersBuy298,3701,241,191$281,961
Q1 2020Durable Capital PartnersBuy942,821942,821$143,544
Q1 2020Renaissance Technologies LLCSell-195,200365,200$55,602
Q4 2019Renaissance Technologies LLCBuy187,700560,400$84,245
Q3 2019Renaissance Technologies LLCBuy63,700372,700$52,856

Frequently asked questions about WST activity

  • Which institutional owners are buying WST?

    Institutional owners buying WST 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 WST activity?

    "Buy" means an investor increased their reported position in WST compared to the prior reporting period. This reflects growing exposure to WEST PHARMACEUTICAL SERVICES (WST) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in WST increasing?

    Institutional interest in WST 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.

Related WST Institutional Insights