William Blair Investment Management’s West Pharmaceutical WST Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2025
Q3
$10.7M Sell
2025
Q2
$80.1M Buy
2025
Q1
$79M Sell
2024
Q4
$210M Buy
2024
Q3
$23.1M Buy
2024
Q2
$21.9M Buy
2024
Q1
$24.1M Buy
2023
Q2
Sell
2023
Q1
$553K Buy
2019
Q1
Sell
2018
Q4
$73.5M Sell
2018
Q3
$177M Sell
2018
Q2
$162M Buy
2018
Q1
$116M Buy
2017
Q4
$126M Buy
2017
Q3
$85.6M Buy
2015
Q4
Sell
2015
Q3
$398K Buy