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West Pharmaceutical
WST

Overview Fund Activity

703 hedge funds and large institutions have $15.4B invested in West Pharmaceutical in 2025 Q1 according to their latest regulatory filings, with 91 funds opening new positions, 267 increasing their positions, 259 reducing their positions, and 112 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
703
Holders Change
-35
Holders Change %
-4.74%
% of All Funds
9.55%
Holding in Top 10
3
Holding in Top 10 Change
-7
Holding in Top 10 Change %
-70%
% of All Funds
0.04%
New
91
Increased
267
Reduced
259
Closed
112
Calls
$98M
Puts
$63M
Net Calls
+$35M
Net Calls Change
+$96.3M

Top Buyers

1
DCP
1
Durable Capital Partners
Maryland
$352M
2
VanEck Associates
2
VanEck Associates
New York
$324M
3
Brown Advisory
3
Brown Advisory
Maryland
$732M
4
Two Sigma Investments
4
Two Sigma Investments
New York
$117M
5
Gates Foundation Trust
5
Gates Foundation Trust
Washington
$99.5M

Top Sellers

1
AllianceBernstein
1
AllianceBernstein
Tennessee
$17.9M
2
Artisan Partners
2
Artisan Partners
Wisconsin
$492M
3
BlackRock
3
BlackRock
New York
$1.55B
4
Citadel Advisors
4
Citadel Advisors
Florida
$62.8M
5
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$34.6M
Name Holding Trade Value Shares
Change 		Shares
Change %
State Board of Administration of Florida Retirement System
101
State Board of Administration of Florida Retirement System
Florida
$15.6M – – –
Jacobs Levy Equity Management
102
Jacobs Levy Equity Management
New Jersey
$15.3M +$15.3M +68,411 New
RT
103
Rockland Trust
Massachusetts
$14.5M +$1.11M +4,980 +8%
Parnassus Investments
104
Parnassus Investments
California
$14M – – –
Aberdeen Group
105
Aberdeen Group
United Kingdom
$14M -$23.7M -106,834 -63%
Canada Pension Plan Investment Board
106
Canada Pension Plan Investment Board
Ontario, Canada
$13.8M -$36.4M -162,567 -72%
Twin Tree Management
107
Twin Tree Management
Texas
$13.5M +$13.5M +60,316 New
RSCM
108
Rock Springs Capital Management
Maryland
$13.5M -$24.3M -108,500 -64%
AAS
109
Annex Advisory Services
Wisconsin
$13.4M +$2.51M +11,218 +23%
Asset Management One
110
Asset Management One
Japan
$13.4M +$2.87M +12,805 +27%
Natixis Advisors
111
Natixis Advisors
Massachusetts
$13.3M -$211K -942 -2%
BNP Paribas Asset Management
112
BNP Paribas Asset Management
France
$13.2M +$4.4M +19,649 +50%
New York State Teachers Retirement System (NYSTRS)
113
New York State Teachers Retirement System (NYSTRS)
New York
$13.2M -$908K -4,055 -6%
Corient Private Wealth
114
Corient Private Wealth
Florida
$12.9M -$10.4M -46,650 -45%
BDLIB
115
Banque de Luxembourg Investments (BLI)
Luxembourg
$12.4M +$1.11M +5,000 +10%
National Bank of Canada
116
National Bank of Canada
Quebec, Canada
$12.4M +$4.66M +20,805 +60%
Squarepoint
117
Squarepoint
New York
$12.1M +$11.7M +52,041 +2,673%
PAMP
118
Polar Asset Management Partners
Ontario, Canada
$11.9M +$6.13M +27,370 +106%
Aviva
119
Aviva
United Kingdom
$11.8M +$1.59M +7,091 +16%
Handelsbanken Fonder
120
Handelsbanken Fonder
Sweden
$11.5M -$920K -4,111 -7%
Creative Planning
121
Creative Planning
Kansas
$11.3M +$108K +482 +1%
Public Employees Retirement Association of Colorado
122
Public Employees Retirement Association of Colorado
Colorado
$11.1M – – –
GIA
123
Gateway Investment Advisers
Ohio
$11.1M +$11.1M +49,543 New
Janney Montgomery Scott
124
Janney Montgomery Scott
Pennsylvania
$10.6M +$526K +2,350 +5%
IPAM
125
ICICI Prudential Asset Management
India
$10.5M +$7.39M +33,000 +236%
3 4
5
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