Twin Tree Management
WST icon

Twin Tree Management’s West Pharmaceutical WST Stock Holding History

Twin Tree Management’s Portfolio WST Stock Details WST Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-200
Closed -$50.1K – 1735
2026
Q1 		$50.1K Sell
200
-14,500
-99% -$3.61M ﹤0.01% 1193
2025
Q4 		$4.04M Sell
14,700
-5,500
-27% -$1.5M 0.04% 585
2025
Q3 		$5.3M Buy
+20,200
New +$4.91M 0.02% 739
2025
Q2 		– Sell
-800
Closed -$179K – 1970
2025
Q1 		$179K Buy
+800
New +$220K ﹤0.01% 1392
2024
Q1 		– Sell
-17,600
Closed -$6.2M – 1654
2023
Q4 		$6.2M Hold
17,600
– – 0.01% 815
2023
Q3 		$6.6M Buy
+17,600
New +$6.81M 0.01% 620
2019
Q4 		– Sell
-2,800
Closed -$397K – 1505
2019
Q3 		$397K Hold
2,800
– – ﹤0.01% 933
2019
Q2 		$350K Buy
+2,800
New +$331K ﹤0.01% 925
2016
Q4 		– Sell
-15,500
Closed -$1.16M – 1384
2016
Q3 		$1.16M Buy
+15,500
New +$1.23M 0.01% 628

Other funds holding WST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
GIM
Generation Investment Management London, United Kingdom $10.3B AUM 4.84% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Twin Tree Management's WST Position: Q3 2025 in Review

Twin Tree Management sold out of West Pharmaceutical (WST) in Q3 2025, closing a stake of 23,299 shares — an estimated $5.66M sold.

Twin Tree Management first reported a position in WST in Q4 2016 and held it in 9 quarters. The position peaked at $13.5M in Q1 2025. 758 funds tracked by Wall St. Rank hold WST as of Q3 2025.

  • Twin Tree Management reported no remaining West Pharmaceutical position as of Q3 2025 after selling out during the quarter.
  • Twin Tree Management sold 23,299 West Pharmaceutical shares in Q3 2025, an estimated $5.66M.
  • Twin Tree Management first reported a position in West Pharmaceutical in Q4 2016 and held it in 9 quarters.
  • Twin Tree Management's West Pharmaceutical position peaked at $13.5M in Q1 2025.
  • 758 funds tracked by Wall St. Rank held West Pharmaceutical as of Q3 2025.

Based on Twin Tree Management's 13F filing for Q3 2025, filed 13 Nov 2025.