David A. Siegel West Pharmaceutical Services Inc Transaction History

Two Sigma Advisers, LP

$46.1 Billion
Q2 2025

A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in West Pharmaceutical Services Inc stock. As of the latest transaction made, Two Sigma Advisers, LP holds 296,500 shares of WST stock, worth $79.2 Million. This represents 0.14% of its overall portfolio holdings.

Number of Shares

296,500

Previous 243,900 21.57%

Holding current value

$79.2 Million

Previous $54.6 Million 18.81%

% of portfolio

0.14%

Previous 0.13%

28 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Aug 14, 2025	BUY	$190.39 - $227.7 $10 Million - $12 Million	52,600 Added 21.57%	296,500 $64.9 Million
Q1 2025 May 15, 2025	BUY	$199.11 - $347.87 $47.2 Million - $82.5 Million	237,200 Added 3540.3%	243,900 $54.6 Million
Q4 2024 Feb 14, 2025	SELL	$285.69 - $344.0 $9.26 Million - $11.1 Million	-32,400 Reduced 82.86%	6,700 $2.19 Million
Q3 2024 Nov 14, 2024	BUY	$277.16 - $333.3 $5.07 Million - $6.1 Million	18,300 Added 87.98%	39,100 $11.7 Million
Q2 2024 Aug 14, 2024	BUY	$314.68 - $395.94 $1.6 Million - $2.02 Million	5,100 Added 32.48%	20,800 $6.85 Million
Q1 2024 May 15, 2024	SELL	$338.27 - $413.0 $2.1 Million - $2.56 Million	-6,200 Reduced 28.31%	15,700 $6.21 Million
Q4 2023 Feb 14, 2024	BUY	$318.29 - $392.21 $1.72 Million - $2.12 Million	5,400 Added 32.73%	21,900 $7.71 Million
Q3 2023 Nov 14, 2023	SELL	$354.9 - $412.41 $2.77 Million - $3.22 Million	-7,800 Reduced 32.1%	16,500 $6.19 Million
Q2 2023 Aug 14, 2023	BUY	$334.63 - $382.47 $1.81 Million - $2.07 Million	5,400 Added 28.57%	24,300 $9.29 Million
Q1 2023 May 15, 2023	SELL	$232.5 - $346.47 $23.2 Million - $34.6 Million	-99,900 Reduced 84.09%	18,900 $6.55 Million
Q4 2022 Feb 14, 2023	BUY	$209.34 - $261.61 $23.6 Million - $29.5 Million	112,700 Added 1847.54%	118,800 $28 Million
Q3 2022 Nov 14, 2022	SELL	$246.08 - $343.65 $935,104 - $1.31 Million	-3,800 Reduced 38.38%	6,100 $1.5 Million
Q2 2022 Aug 15, 2022	BUY	$280.61 - $420.45 $897,952 - $1.35 Million	3,200 Added 47.76%	9,900 $2.99 Million
Q1 2022 May 16, 2022	BUY	$357.49 - $445.92 $1.18 Million - $1.47 Million	3,300 Added 97.06%	6,700 $2.75 Million
Q4 2021 Feb 14, 2022	BUY	$402.25 - $471.34 $1.37 Million - $1.6 Million	3,400 New	3,400 $1.6 Million
Q2 2021 Aug 16, 2021	SELL	$284.77 - $363.2 $3.39 Million - $4.32 Million	-11,900 Closed	0 $0
Q1 2021 May 17, 2021	BUY	$257.29 - $307.53 $3.06 Million - $3.66 Million	11,900 New	11,900 $3.35 Million
Q2 2020 Aug 14, 2020	SELL	$149.8 - $227.17 $1.63 Million - $2.48 Million	-10,900 Closed	0 $0
Q1 2020 May 15, 2020	BUY	$128.96 - $174.76 $515,840 - $699,040	4,000 Added 57.97%	10,900 $1.66 Million
Q4 2019 Feb 14, 2020	SELL	$137.6 - $151.21 $123,840 - $136,089	-900 Reduced 11.54%	6,900 $1.04 Million
Q3 2019 Nov 14, 2019	BUY	$121.41 - $150.02 $946,998 - $1.17 Million	7,800 New	7,800 $1.11 Million
Q1 2019 May 15, 2019	SELL	$94.53 - $110.2 $236,325 - $275,500	-2,500 Closed	0 $0
Q4 2018 Feb 14, 2019	BUY	$93.0 - $123.98 $58,869 - $78,479	633 Added 33.9%	2,500 $245,000
Q3 2018 Nov 14, 2018	BUY	$98.01 - $123.47 $182,984 - $230,518	1,867 New	1,867 $231,000
Q2 2018 Aug 14, 2018	SELL	$83.32 - $101.88 $1.12 Million - $1.37 Million	-13,399 Closed	0 $0
Q1 2018 May 15, 2018	BUY	$85.56 - $102.4 $17,112 - $20,480	200 Added 1.52%	13,399 $1.18 Million
Q4 2017 Feb 14, 2018	SELL	$91.65 - $101.65 $5.37 Million - $5.96 Million	-58,600 Reduced 81.62%	13,199 $1.3 Million
Q3 2017 Nov 14, 2017	BUY	$84.54 - $96.75 $6.07 Million - $6.95 Million	71,799	71,799 $6.91 Million

Others Institutions Holding WST

# of Institutions

822

Shares Held

68.5M

Call Options Held

344K

Put Options Held

144K

View Full List

About WEST PHARMACEUTICAL SERVICES INC

Ticker WST
Exchange NYSE
Sector Healthcare
Industry Medical Instruments & Supplies
Shares Outstandng 74,033,000
Market Cap $19.8B
Description
West Pharmaceutical Services, Inc. designs, manufactures, and sells containment and delivery systems for injectable drugs and healthcare products in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. It operates in two segments, Proprietary Products and Contract-Manufactured Products. The Proprietary Products segment offers sto...

More about WST

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