PEAK6
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PEAK6’s West Pharmaceutical WST Stock Holding History

PEAK6’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
Q1 		$501K Buy
2,000
+1,100
+122% +$274K ﹤0.01% 1977
2025
Q4 		$248K Sell
900
-700
-44% -$191K ﹤0.01% 2333
2025
Q3 		$420K Sell
1,600
-5,000
-76% -$1.22M ﹤0.01% 2211
2025
Q2 		$1.44M Sell
6,600
-300
-4% -$64.1K ﹤0.01% 1610
2025
Q1 		$1.54M Buy
+6,900
New +$1.9M ﹤0.01% 1531

Other funds holding WST

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
GIM
Generation Investment Management London, United Kingdom $11.2B AUM 0.58% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

PEAK6's WST Position: Q4 2025 in Review

PEAK6 sold out of West Pharmaceutical (WST) in Q4 2025, closing a stake of 377 shares — an estimated $103K sold.

PEAK6 first reported a position in WST in Q4 2024 and held it in 2 quarters. The position peaked at $978K in Q4 2024. 802 funds tracked by Wall St. Rank hold WST as of Q4 2025.

  • PEAK6 reported no remaining West Pharmaceutical position as of Q4 2025 after selling out during the quarter.
  • PEAK6 sold 377 West Pharmaceutical shares in Q4 2025, an estimated $103K.
  • PEAK6 first reported a position in West Pharmaceutical in Q4 2024 and held it in 2 quarters.
  • PEAK6's West Pharmaceutical position peaked at $978K in Q4 2024.
  • 802 funds tracked by Wall St. Rank held West Pharmaceutical as of Q4 2025.

Based on PEAK6's 13F filing for Q4 2025, filed 13 Feb 2026.