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WEST PHARMACEUTICAL SVSC INC

WST

Holders

2

Combined Value

$157.05M

Combined Shares

626,608

Current Price

$328.82

52W High

$336.82

vs 52W High

−2.4%

Investor Activity Chart

Quarterly buys (▲) and sells (▼) by tracked investors. Click a marker to view that investor's portfolio; hover for details. Price line is implied from 13F filings (value ÷ shares), not market data.

$207.53$233.82$260.12$286.41Q2'25Q3'25Q4'25Q1'26Q2 2025 · implied price $218.80Q4 2025 · implied price $275.14Q1 2026 · implied price $250.64Jim Simons - Renaissance Technologies · bought 24,300 shares @ ~$218.80 · Q2 2025 (new position)Jim Simons - Renaissance Technologies · sold 24,300 shares @ ~$218.80 · Q3 2025 (sold out)Andreas Halvorsen - Viking Global Investors · bought 295,028 shares @ ~$275.14 · Q4 2025 (new position)Jim Simons - Renaissance Technologies · bought 104,736 shares @ ~$275.14 · Q4 2025 (new position)Andreas Halvorsen - Viking Global Investors · bought 121,920 shares @ ~$250.64 · Q1 2026Jim Simons - Renaissance Technologies · bought 104,924 shares @ ~$250.64 · Q1 2026BUYSELLIMPLIED PRICE

Held By

Tracked investors currently holding this security, based on each investor's most recent 13F filing. Gain compares the current market price to each investor's estimated average buy price.

InvestorValue% of PortfolioAvg Buy PriceGainLast ActivityAs of
Andreas Halvorsen - Viking Global Investors$104.50M0.29%~$267.98+22.7%BUY Q1 2026Q1 2026
Jim Simons - Renaissance Technologies$52.55M0.08%~$262.88+25.1%BUY Q1 2026Q1 2026

Recent Activity

Latest position changes by tracked investors. Prices are estimates implied from 13F filings.

QuarterInvestorActionEst. ValueEst. Price
Q1 2026Andreas Halvorsen - Viking Global InvestorsBUY+$30.56M~$250.64
Q1 2026Jim Simons - Renaissance TechnologiesBUY+$26.30M~$250.64
Q4 2025Andreas Halvorsen - Viking Global InvestorsNEW BUY+$81.17M~$275.14
Q4 2025Jim Simons - Renaissance TechnologiesNEW BUY+$28.82M~$275.14
Q3 2025Jim Simons - Renaissance TechnologiesSOLD OUT−$5.32M~$218.80
Q2 2025Jim Simons - Renaissance TechnologiesNEW BUY+$5.32M~$218.80

Ownership History

Aggregate position across all tracked investors per quarter (options excluded). Implied price is the reported value divided by shares held.

PeriodHoldersTotal SharesΔ SharesTotal ValueImplied Price
Q1 20262626,608+56.7%$157.05M$250.64
Q4 20252399,764+1545.1%$109.99M$275.14
Q2 2025124,300—$5.32M$218.80