Jane Street
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Jane Street’s West Pharmaceutical WST Stock Holding History

Jane Street’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 		$1.83M Buy
7,300
+3,000
+70% +$746K ﹤0.01% 5267
2025
Q4 		$1.18M Sell
4,300
-11,000
-72% -$3.01M ﹤0.01% 5791
2025
Q3 		$4.01M Sell
15,300
-3,500
-19% -$851K ﹤0.01% 3746
2025
Q2 		$4.11M Sell
18,800
-67,300
-78% -$14.4M ﹤0.01% 3279
2025
Q1 		$19.3M Buy
86,100
+300
+0.3% +$82.7K ﹤0.01% 1338
2024
Q4 		$28.1M Sell
85,800
-89,000
-51% -$28M 0.01% 1029
2024
Q3 		$52.5M Buy
174,800
+87,100
+99% +$26.7M 0.01% 675
2024
Q2 		$28.9M Sell
87,700
-900
-1% -$318K 0.01% 1014
2024
Q1 		$35.1M Sell
88,600
-7,400
-8% -$2.74M 0.01% 821
2023
Q4 		$33.8M Buy
96,000
+26,000
+37% +$9.2M 0.01% 888
2023
Q3 		$26.3M Buy
70,000
+60,200
+614% +$23.3M 0.01% 904
2023
Q2 		$3.75M Buy
9,800
+2,000
+26% +$714K ﹤0.01% 3153
2023
Q1 		$2.7M Sell
7,800
-22,400
-74% -$6.55M ﹤0.01% 3317
2022
Q4 		$7.11M Buy
30,200
+7,100
+31% +$1.68M ﹤0.01% 2027
2022
Q3 		$5.68M Sell
23,100
-12,900
-36% -$3.93M ﹤0.01% 2408
2022
Q2 		$10.9M Sell
36,000
-3,400
-9% -$1.11M ﹤0.01% 1642
2022
Q1 		$16.2M Sell
39,400
-20,900
-35% -$8.18M 0.01% 1462
2021
Q4 		$28.3M Buy
60,300
+5,600
+10% +$2.41M 0.01% 953
2021
Q3 		$23.2M Buy
54,700
+22,700
+71% +$9.57M 0.01% 1041
2021
Q2 		$11.5M Buy
+32,000
New +$10.6M ﹤0.01% 1560
2020
Q4 		– Sell
-2,900
Closed -$797K – 8201
2020
Q3 		$797K Buy
2,900
+900
+45% +$238K ﹤0.01% 4456
2020
Q2 		$454K Buy
+2,000
New +$393K ﹤0.01% 5228

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

Jane Street's WST Position: Q1 2026 in Review

Jane Street increased its West Pharmaceutical (WST) stake by 39% in Q1 2026, buying an estimated $21.2M and bringing the position to 305,132 shares worth $76.5M. The position accounts for 0.01% of the portfolio, ranked #786.

Jane Street first reported a position in WST in Q3 2013 and has held it in 33 quarters since. 754 funds tracked by Wall St. Rank hold WST as of Q1 2026.

  • Jane Street held 305,132 shares of West Pharmaceutical worth $76.5M as of Q1 2026.
  • Jane Street bought 85,386 West Pharmaceutical shares in Q1 2026, an estimated $21.2M.
  • West Pharmaceutical made up 0.01% of Jane Street's portfolio in Q1 2026, its #786 holding.
  • Jane Street first reported a position in West Pharmaceutical in Q3 2013 and has held it in 33 quarters since.
  • 754 funds tracked by Wall St. Rank held West Pharmaceutical as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.