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West Pharmaceutical

753 hedge funds and large institutions have $17.8B invested in West Pharmaceutical in 2026 Q1 according to their latest regulatory filings, with 89 funds opening new positions, 264 increasing their positions, 281 reducing their positions, and 124 closing their positions.

New
Increased
Maintained
Reduced
Closed

50% more funds holding in top 10

Funds holding in top 10: 46 (+2)

1.87% more ownership

Funds ownership: 96.76%98.64% (+1.9%)

6% less repeat investments, than reductions

Existing positions increased: 264 | Existing positions reduced: 281

6% less funds holding

Funds holding: 802753 (-49)

7% less capital invested

Capital invested by funds: $19.1B → $17.8B (-$1.31B)

28% less first-time investments, than exits

New positions opened: 89 | Existing positions closed: 124

52% less call options, than puts

Call options by funds: $60.5M | Put options by funds: $126M

Holders
753
Holders Change
-49
Holders Change %
-6.11%
% of All Funds
9.28%
Holding in Top 10
6
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+50%
% of All Funds
0.07%
New
89
Increased
264
Reduced
281
Closed
124
Calls
$60.5M
Puts
$126M
Net Calls
-$65.4M
Net Calls Change
-$80.5M
Name Holding Trade Value Shares
Change
Change in
Stake
AQR Capital Management
51
AQR Capital Management
Connecticut
$66.5M -$62.4M -250,687 -48%
RP
52
Riverbridge Partners
Minnesota
$65.5M -$14.2M -57,171 -18%
RhumbLine Advisers
53
RhumbLine Advisers
Massachusetts
$65M -$3.23M -12,965 -5%
SFFS
54
Stonehage Fleming Financial Services
Jersey
$63.9M +$63.4M +254,817 New
Wellington Management Group
55
Wellington Management Group
Massachusetts
$62.3M +$57.9M +232,776 +1,468%
Envestnet Asset Management
56
Envestnet Asset Management
Illinois
$59M -$3.13M -12,591 -5%
California Public Employees Retirement System
57
California Public Employees Retirement System
California
$58.4M +$27.3M +109,581 +89%
BBHC
58
Brown Brothers Harriman & Co
New York
$57.2M -$3.05M -12,276 -5%
BTCPP
59
Border to Coast Pensions Partnership
United Kingdom
$57M -$2.35M -9,450 -4%
SIM
60
Seilern Investment Management
United Kingdom
$56.6M -$13M -52,208 -19%
Two Sigma Investments
61
Two Sigma Investments
New York
$56.6M +$21.3M +85,692 +61%
Swiss National Bank
62
Swiss National Bank
Switzerland
$52.9M +$3.51M +14,120 +7%
Renaissance Technologies
63
Renaissance Technologies
New York
$52.5M +$26.1M +104,924 +100%
Federated Hermes
64
Federated Hermes
Pennsylvania
$52.2M +$2.01M +8,095 +4%
CIP
65
Champlain Investment Partners
Vermont
$51.6M -$67M -269,376 -57%
Holocene Advisors
66
Holocene Advisors
New York
$51M +$18.9M +75,904 +59%
LGF
67
LGT Group Foundation
Liechtenstein
$51M -$381K -1,531 -0.7%
VF
68
Vest Financial
Virginia
$50.9M +$6.19M +24,869 +14%
BAMCO Inc
69
BAMCO Inc
New York
$50.1M -$15.8M -63,439 -24%
Russell Investments Group
70
Russell Investments Group
United Kingdom
$48.9M +$5.78M +23,230 +13%
Mitsubishi UFJ Asset Management
71
Mitsubishi UFJ Asset Management
Japan
$45.6M +$3.7M +14,882 +9%
Neuberger Berman Group
72
Neuberger Berman Group
New York
$45.6M -$61.1M -245,659 -57%
Allianz Asset Management
73
Allianz Asset Management
Germany
$44.3M +$37.9M +152,310 +628%
Nomura Asset Management
74
Nomura Asset Management
Japan
$43.7M +$4.92M +19,760 +13%
Sumitomo Mitsui Trust Group
75
Sumitomo Mitsui Trust Group
Japan
$43.3M -$830K -3,336 -2%