West Pharmaceutical Services Inc
WST- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0000105770
In the last 90 days, West Pharmaceutical Services Inc insiders filed 0 open-market purchases and 2 sales; 833 institutions reported holding it in 13F filings for Q2 2026, worth $25.2B in total; Gates Foundation Trust is the only superinvestor holding it.
Superinvestors holding WST, Q2 2026
1 superinvestor reports holding West Pharmaceutical Services Inc on Form 13F, worth $159.6M in total. Weight is West Pharmaceutical Services Inc's share of each 13F portfolio; actions compare shares with Q1 2026.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| Gates Foundation TrustBill Gates | 0.5% | 444,500 | $159.6M | Unchanged |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of WST each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2026
1 superinvestor holding at quarter end
- Sold out
- Viking Global Investors
Q1 2026
2 superinvestors holding at quarter end
- Added
- Viking Global Investors (+41.3%)
Q4 2025
2 superinvestors holding at quarter end
Q1 2025
1 superinvestor holding at quarter end
Q2 2024
0 superinvestors holding at quarter end
- Sold out
- Maverick Capital
Q1 2024
1 superinvestor holding at quarter end
Q3 2022
0 superinvestors holding at quarter end
- Sold out
- ARK Invest
Q2 2022
1 superinvestor holding at quarter end
- Reduced
- ARK Invest (−4.4%)
Q1 2022
1 superinvestor holding at quarter end
- New
- ARK Invest
Q4 2021
0 superinvestors holding at quarter end
- Sold out
- Maverick Capital
Q3 2021
1 superinvestor holding at quarter end
- Added
- Maverick Capital (+1,790.8%)
Q2 2021
1 superinvestor holding at quarter end