Dark Forest Capital Management’s West Pharmaceutical WST Stock Holding History

Dark Forest Capital 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	$1.26M	Buy	+3,501	New	+$1.07M	0.08%	436
2026 Q1	–	Sell	-20,131	Closed	-$5.54M	–	1183
2025 Q4	$5.54M	Buy	20,131 +19,028	+1,725%	+$5.2M	0.25%	77
2025 Q3	$289K	Buy	+1,103	New	+$268K	0.01%	1036
2025 Q2	–	Sell	-2,950	Closed	-$660K	–	1546
2025 Q1	$660K	Buy	+2,950	New	+$813K	0.03%	844
2024 Q4	–	Sell	-788	Closed	-$237K	–	1315
2024 Q3	$237K	Buy	+788	New	+$241K	0.03%	788
2023 Q2	–	Sell	-19	Closed	-$6.58K	–	1439
2023 Q1	$6.58K	Buy	+19	New	+$5.55K	﹤0.01%	1059
2022 Q4	–	Sell	-66	Closed	-$16K	–	1523
2022 Q3	$16K	Buy	+66	New	+$20.1K	﹤0.01%	658
2022 Q1	–	Sell	-135	Closed	-$63K	–	1813
2021 Q4	$63K	Buy	+135	New	+$58.1K	0.02%	420
2021 Q3	–	Sell	-831	Closed	-$298K	–	1582
2021 Q2	$298K	Buy	+831	New	+$275K	0.13%	94

Other funds holding WST

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return

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 Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Dark Forest Capital Management's WST Position: Q2 2026 in Review

Dark Forest Capital Management opened a new position in West Pharmaceutical (WST) in Q2 2026: 3,501 shares worth $1.26M. The stake represents 0.08% of the portfolio and ranks #436 among its holdings. This is a return to the name: Dark Forest Capital Management previously reported a position in WST as recently as Q4 2025.

Dark Forest Capital Management first reported a position in WST in Q2 2021 and has held it in 9 quarters since. The position peaked at $5.54M in Q4 2025. 831 funds tracked by Wall St. Rank hold WST as of Q2 2026.

Dark Forest Capital Management held 3,501 shares of West Pharmaceutical worth $1.26M as of Q2 2026.
West Pharmaceutical was a new Dark Forest Capital Management position in Q2 2026.
West Pharmaceutical made up 0.08% of Dark Forest Capital Management's portfolio in Q2 2026, its #436 holding.
Dark Forest Capital Management first reported a position in West Pharmaceutical in Q2 2021 and has held it in 9 quarters since.
Dark Forest Capital Management's West Pharmaceutical position peaked at $5.54M in Q4 2025.
831 funds tracked by Wall St. Rank held West Pharmaceutical as of Q2 2026.

Based on Dark Forest Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.