West Pharmaceutical Services

WST • NYSE

West Pharmaceutical Services is a medical - instruments & supplies company in the healthcare sector on NYSE, led by Eric M. Green, with a market cap of $19.2B. As of Q3 2025, 95% of shares are held by 736 institutional investors, with VANGUARD GROUP INC as the largest holder at 13.5%.

President and Chief Executive OfficerEric M. Green

Market Cap$19.2B

Medical - Instruments & Supplies

Healthcare

Employees10.6K

Websitewestpharma.com

Country

United States of America

Overview

Overview of institutional ownership in WST as of Q3 2025 with a market cap of $18.9B

All Institutions

Institutions: 736
Value Held: $18.0B
Shares Held: 68.9M
Avg Position: $24.5M
Median Position: $741.6K

Hedge Funds

Hedge Funds: 47
Value Held: $1.5B
Shares Held: 5.9M
Avg Position: $32.9M
Median Position: $2.6M

Ownership Breakdown

Institutional (non-HF)

87.21%

$16.5B

Hedge Funds

8.2%

$1.5B

Retail & Other

4.58%

$864.9M

Based on market cap of $18.9B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in WST as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
VANGUARD GROUP INC Institution	Salim Ramji CEO	$2.5B 0.04% of portfolio	13.50% 9.7M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
B BlackRock, Inc. Institution	-	$1.7B 0.03% of portfolio	8.98% 6.5M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$841.5M 0.03% of portfolio	4.46% 3.2M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
Bank of New York Mellon Corp Institution	Robin Vince CEO	$762.0M 0.14% of portfolio	4.04% 2.9M shares	≤ Q2 2013 Held for 12y 5m+	$556.34B
Artisan Partners Limited Partnership Long Only Manager	Eric Richard Colson CEO	$726.9M 1.05% of portfolio	3.85% 2.8M shares	Q3 2017 Held for 8y 2m	$69.5B
B BROWN ADVISORY INC RIA/Wealth	David Alan Miller Founder	$655.3M 0.89% of portfolio	3.47% 2.5M shares	Q1 2017 Held for 8y 8m	$74.0B
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$485.2M 0.03% of portfolio	2.58% 1.9M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
MORGAN STANLEY RIA/Wealth	Jed Finn CEO	$387.9M 0.02% of portfolio	2.06% 1.5M shares	≤ Q2 2013 Held for 12y 5m+	$1.65T
VAN ECK ASSOCIATES CORP ETF Provider	Jan Frederick Vaneck CEO	$373.8M 0.39% of portfolio	1.98% 1.4M shares	Q2 2020 Held for 5y 5m	$96.6B
A APG All Pensions Group NV Institution	-	$315.6M 0.89% of portfolio	1.97% 1.4M shares	Q4 2019 Held for 5y 11m	$35.6B

Net Capital Flow

Institutional buying and selling activity for WST in Q3 2025

Traded: +$118.2M
Buyers: 380
Sellers: 322
Total Bought: +$1.8B
Total Sold: −$1.6B
Avg Position: $22.0M

Biggest Buyers

Institution	Net Bought	Current Position
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$157.1M +598.8K shares	$190.9M 727.5K shares
Artisan Partners Limited Partnership Long Only Manager	+$132.1M +503.6K shares	$726.9M 2.8M shares
S STEADFAST CAPITAL MANAGEMENT LP Hedge Fund•Long/Short	+$123.7M +471.4K shares	$123.7M 471.4K shares
AQR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$115.5M +440.9K shares	$142.9M 545.9K shares
VANGUARD GROUP INC Institution	+$101.8M +388.1K shares	$2.5B 9.7M shares
Longview Partners LTD Long Only Manager	+$92.4M +352.1K shares	$92.4M 352.1K shares
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	+$83.8M +319.3K shares	$172.9M 659.3K shares
Woodline Partners LP Hedge Fund•Long/Short	+$66.2M +252.2K shares	$66.2M 252.2K shares
T T. Rowe Price Investment Management, Inc. Insurance Manager	+$61.6M +235.0K shares	$184.0M 701.4K shares
Holocene Advisors, LP Hedge Fund•Long/Short	+$49.1M +187.1K shares	$49.1M 187.1K shares

Biggest Sellers

Institution	Net Sold	Current Position
B BROWN ADVISORY INC RIA/Wealth	−$137.3M −523.2K shares	$655.3M 2.5M shares
TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy	−$126.7M −482.9K shares	$26.5M 101.2K shares
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Long Only Manager	−$85.3M −325.3K shares	$10.7M 40.8K shares
Bank of New York Mellon Corp Institution	−$79.1M −301.7K shares	$762.0M 2.9M shares
GOLDMAN SACHS GROUP INC Institution	−$65.1M −248.3K shares	$109.7M 418.1K shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	−$64.9M −296.5K shares	Sold Off 0 shares
B BNP PARIBAS ARBITRAGE, SA Institution	−$64.0M −243.9K shares	$31.8M 121.3K shares
A Amundi Institution	−$58.5M −218.4K shares	$76.3M 284.5K shares
A APG All Pensions Group NV Institution	−$54.7M −245.0K shares	$315.6M 1.4M shares
G GENERATION INVESTMENT MANAGEMENT LLP Institution	−$49.8M −189.8K shares	$256.0M 976.0K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited WST in Q3 2025

New Positions: 39
New Value: $266.8M
Exited Positions: 82
Exited Value: $257.0M

New Positions

Institution	Position Value
S STEADFAST CAPITAL MANAGEMENT LP Hedge Fund•Long/Short	$123.7M 471.4K shares
Longview Partners LTD Long Only Manager	$92.4M 352.1K shares
B Border to Coast Pensions Partnership Ltd Institution	$40.9M 155.7K shares
Hillman Capital Management, Inc. Long Only Manager	$2.7M 10.3K shares
SUMMIT WEALTH GROUP LLC / CO RIA/Wealth	$985.2K 2.6K shares
R Radnor Capital Management, LLC Institution	$682.6K 2.6K shares
BRIGHTON JONES LLC RIA/Wealth	$659.5K 2.5K shares
Catalytic Wealth RIA, LLC RIA/Wealth	$569.3K 2.2K shares
Merit Financial Group, LLC RIA/Wealth	$553.6K 2.1K shares
Krilogy Financial LLC RIA/Wealth	$407.2K 1.4K shares

Exited Positions

Institution	Previous Position
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	$64.9M 296.5K shares
VOLORIDGE INVESTMENT MANAGEMENT, LLC Hedge Fund•Multi-Strategy	$36.7M 167.9K shares
J J. Goldman & Co LP Hedge Fund•Multi-Strategy	$35.8M 163.8K shares
Q Qube Research & Technologies Ltd Institution	$30.6M 139.8K shares
Edgestream Partners, L.P. Hedge Fund•Quant Macro	$8.3M 37.8K shares
Weiss Asset Management LP Hedge Fund•Multi-Strategy	$7.0M 32.2K shares
SAWGRASS ASSET MANAGEMENT LLC Long Only Manager	$6.1M 28.1K shares
Quantbot Technologies LLC Hedge Fund•Quant	$5.6M 25.8K shares
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant	$5.3M 24.3K shares
T Twin Tree Management, LP Hedge Fund•Vol Arbitrage	$5.1M 23.3K shares

Options Activity

Institutions with the largest Call and Put options positions in WST as of Q3 2025

Call Positions: 11
Call Value: $71.3M
Put Positions: 11
Put Value: $25.2M

Call Positions

Institution	Position Value
J JANE STREET GROUP, LLC Institution	$23.3M 888.0 contracts
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$21.8M 831.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$12.5M 475.0 contracts
T Twin Tree Management, LP Hedge Fund•Vol Arbitrage	$5.3M 202.0 contracts
UBS Group AG Institution	$3.7M 140.0 contracts
W WOLVERINE TRADING, LLC Institution	$2.1M 81.0 contracts
P PEAK6 LLC Institution	$2.1M 80.0 contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$524.7K 20.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	- - contracts
Walleye Trading LLC RIA/Wealth	- - contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$11.5M 437.0 contracts
T Twin Tree Management, LP Hedge Fund•Vol Arbitrage	$6.3M 241.0 contracts
J JANE STREET GROUP, LLC Institution	$4.0M 153.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$2.1M 79.0 contracts
W WOLVERINE TRADING, LLC Institution	$676.8K 26.0 contracts
P PEAK6 LLC Institution	$419.7K 16.0 contracts
C Cubist Systematic Strategies, LLC Institution	$209.9K 8.0 contracts
Walleye Trading LLC RIA/Wealth	- - contracts
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	- - contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	- - contracts

Most Committed Institutions

Institutions with WST as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
S Seilern Investment Management Ltd Institution	-	6.20% $85.8M	0.45% 327.0K shares	Q4 2024 Held for 11 months	$1.4B
Alpine Peaks Capital, LP Hedge Fund•Long/Short	Jennifer Ralph Oppold Managing Partner	6.14% $7.0M	0.04% 26.8K shares	Q4 2021 Held for 3y 11m	$114.7M
M McCollum Christoferson Group LLC RIA/Wealth	Katherine Ann Christoferson Managing Partner	3.13% $10.9M	0.06% 41.7K shares	Q4 2017 Held for 7y 11m	$349.0M
Iron Triangle Partners LP Hedge Fund•Long/Short	Michael John O'Brien CFO	2.61% $18.4M	0.10% 70.0K shares	Q3 2025 Held for 2 months	$703.3M
G GRACE & WHITE INC /NY RIA/Wealth	Marc Emil Ravitz President	2.49% $12.0M	0.06% 45.7K shares	≤ Q2 2013 Held for 12y 5m+	$481.2M
AMI ASSET MANAGEMENT CORP Long Only Manager	William Howard Tanner Chairman	2.39% $42.8M	0.23% 163.0K shares	Q3 2014 Held for 11y 2m	$1.8B
Durable Capital Partners LP Hedge Fund•Long/Short	Henry Martin Ellenbogen CIO	2.28% $307.6M	1.63% 1.2M shares	Q1 2020 Held for 5y 8m	$13.5B
S STEADFAST CAPITAL MANAGEMENT LP Hedge Fund•Long/Short	Sheena Koshy COO	2.24% $123.7M	0.66% 471.4K shares	Q3 2025 Held for 2 months	$5.5B
F Findlay Park Partners LLP Institution	-	2.21% $210.4M	1.12% 802.1K shares	Q4 2022 Held for 2y 11m	$9.5B
Sivik Global Healthcare LLC Hedge Fund•Long/Short	Krishen Kumar Sud Managing Partner	2.13% $3.9M	0.02% 15.0K shares	Q1 2024 Held for 1y 8m	$184.7M

Hedge Fund Spotlight

Discover hedge funds investing in WST

Sivik Global Healthcare LLC

Hedge Fund • Long/Short

Portfolio ManagerKrishen Kumar Sud

Portfolio Value: $184.7M
Positions: 34
Last Reported: Q3 2025

Sector Allocation

Position in West Pharmaceutical Services

Market Value: $3.9M
Shares Held: 15.0K
Portfolio Weight: 2.13%
Owned Since: 2024-Q1

Top Holding	Sector	Market Value	Weight
1 XBI SPDR S&P Biotech XBI	ETF ETF	$25.1M	13.56%
2 Eli Lilly LLY	Drug Manufacturers - General Healthcare	$7.6M	4.13%
3 HCA Healthcare HCA	Medical - Care Facilities Healthcare	$7.2M	3.92%

View full profile

West Pharmaceutical Services

Overview

All Institutions

Hedge Funds

Ownership Breakdown

Biggest Investors

Net Capital Flow

Biggest Buyers

Biggest Sellers

Entry and Exit Activity

New Positions

Exited Positions

Options Activity

Call Positions

Put Positions

Most Committed Institutions

Hedge Fund Spotlight

Position in West Pharmaceutical Services

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