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
Q2 		$11.5M Sell
32,000
-2,800
-8% -$856K ﹤0.01% 2690
2026
Q1 		$8.72M Buy
34,800
+11,100
+47% +$2.76M ﹤0.01% 2711
2025
Q4 		$6.52M Sell
23,700
-65,100
-73% -$17.8M ﹤0.01% 2855
2025
Q3 		$23.3M Sell
88,800
-38,000
-30% -$9.24M ﹤0.01% 1516
2025
Q2 		$27.7M Buy
126,800
+76,400
+152% +$16.3M 0.01% 1150
2025
Q1 		$11.3M Buy
50,400
+24,600
+95% +$6.78M ﹤0.01% 1844
2024
Q4 		$8.45M Sell
25,800
-91,300
-78% -$28.7M ﹤0.01% 2052
2024
Q3 		$35.1M Buy
117,100
+27,900
+31% +$8.54M 0.01% 871
2024
Q2 		$29.4M Sell
89,200
-26,700
-23% -$9.44M 0.01% 999
2024
Q1 		$45.9M Buy
115,900
+48,000
+71% +$17.8M 0.01% 673
2023
Q4 		$23.9M Buy
67,900
+15,300
+29% +$5.41M 0.01% 1132
2023
Q3 		$19.7M Buy
+52,600
New +$20.3M 0.01% 1107
2023
Q2 		– Sell
-12,800
Closed -$4.43M – 9680
2023
Q1 		$4.43M Sell
12,800
-34,600
-73% -$10.1M ﹤0.01% 2614
2022
Q4 		$11.2M Sell
47,400
-15,000
-24% -$3.55M 0.01% 1505
2022
Q3 		$15.4M Buy
62,400
+17,000
+37% +$5.18M 0.01% 1299
2022
Q2 		$13.7M Buy
45,400
+18,900
+71% +$6.15M 0.01% 1431
2022
Q1 		$10.9M Buy
26,500
+11,400
+75% +$4.46M ﹤0.01% 1894
2021
Q4 		$7.08M Sell
15,100
-12,600
-45% -$5.42M ﹤0.01% 2342
2021
Q3 		$11.8M Buy
27,700
+14,500
+110% +$6.11M ﹤0.01% 1604
2021
Q2 		$4.74M Buy
+13,200
New +$4.36M ﹤0.01% 2729
2021
Q1 		– Sell
-2,400
Closed -$680K – 9654
2020
Q4 		$680K Sell
2,400
-6,100
-72% -$1.71M ﹤0.01% 5273
2020
Q3 		$2.34M Buy
8,500
+800
+10% +$212K ﹤0.01% 2799
2020
Q2 		$1.75M Buy
+7,700
New +$1.51M ﹤0.01% 3251

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

Jane Street's WST Position: Q2 2026 in Review

Jane Street reduced its West Pharmaceutical (WST) stake by 29% in Q2 2026, selling an estimated $26.8M and leaving 217,581 shares worth $78.1M. The position accounts for 0.01% of the portfolio, ranked #1100.

Jane Street first reported a position in WST in Q3 2013 and has held it in 34 quarters since. 832 funds tracked by Wall St. Rank hold WST as of Q2 2026.

  • Jane Street held 217,581 shares of West Pharmaceutical worth $78.1M as of Q2 2026.
  • Jane Street sold 87,551 West Pharmaceutical shares in Q2 2026, an estimated $26.8M.
  • West Pharmaceutical made up 0.01% of Jane Street's portfolio in Q2 2026, its #1100 holding.
  • Jane Street first reported a position in West Pharmaceutical in Q3 2013 and has held it in 34 quarters since.
  • 832 funds tracked by Wall St. Rank held West Pharmaceutical as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.