Holocene Advisors
WST icon

Holocene Advisors’s West Pharmaceutical WST Stock Holding History

Holocene Advisors’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 		$98.9M Buy
275,421
+71,800
+35% +$22M 0.22% 120
2026
Q1 		$51M Buy
203,621
+75,904
+59% +$18.9M 0.12% 181
2025
Q4 		$35.1M Sell
127,717
-59,394
-32% -$16.2M 0.07% 245
2025
Q3 		$49.1M Buy
+187,111
New +$45.5M 0.11% 176
2025
Q2 		– Sell
-2,831
Closed -$634K – 897
2025
Q1 		$634K Sell
2,831
-8,396
-75% -$2.31M ﹤0.01% 655
2024
Q4 		$3.68M Sell
11,227
-98,213
-90% -$30.9M 0.01% 450
2024
Q3 		$32.8M Sell
109,440
-76,693
-41% -$23.5M 0.13% 184
2024
Q2 		$61.3M Sell
186,133
-170,875
-48% -$60.4M 0.26% 118
2024
Q1 		$141M Buy
+357,008
New +$132M 0.52% 66
2023
Q4 		– Sell
-17,757
Closed -$6.66M – 852
2023
Q3 		$6.66M Buy
+17,757
New +$6.87M 0.03% 336
2019
Q3 		– Sell
-11,623
Closed -$1.46M – 871
2019
Q2 		$1.46M Sell
11,623
-438
-4% -$51.7K 0.02% 223
2019
Q1 		$1.33M Buy
12,061
+3,665
+44% +$381K 0.02% 201
2018
Q4 		$823K Buy
8,396
+4,255
+103% +$462K 0.01% 302
2018
Q3 		$511K Sell
4,141
-1,105
-21% -$124K 0.01% 539
2018
Q2 		$521K Sell
5,246
-1,320
-20% -$122K 0.01% 157
2018
Q1 		$580K Buy
6,566
+3,902
+146% +$365K 0.01% 149
2017
Q4 		$263K Buy
+2,664
New +$261K 0.01% 565

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

Holocene Advisors's WST Position: Q2 2026 in Review

Holocene Advisors increased its West Pharmaceutical (WST) stake by 35% in Q2 2026, buying an estimated $22M and bringing the position to 275,421 shares worth $98.9M. The position accounts for 0.22% of the portfolio, ranked #120.

Holocene Advisors first reported a position in WST in Q4 2017 and has held it in 17 quarters since. The position peaked at $141M in Q1 2024. 830 funds tracked by Wall St. Rank hold WST as of Q2 2026.

  • Holocene Advisors held 275,421 shares of West Pharmaceutical worth $98.9M as of Q2 2026.
  • Holocene Advisors bought 71,800 West Pharmaceutical shares in Q2 2026, an estimated $22M.
  • West Pharmaceutical made up 0.22% of Holocene Advisors's portfolio in Q2 2026, its #120 holding.
  • Holocene Advisors first reported a position in West Pharmaceutical in Q4 2017 and has held it in 17 quarters since.
  • Holocene Advisors's West Pharmaceutical position peaked at $141M in Q1 2024.
  • 830 funds tracked by Wall St. Rank held West Pharmaceutical as of Q2 2026.

Based on Holocene Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.