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Westlake Corp

333 hedge funds and large institutions have $5.15B invested in Westlake Corp in 2026 Q1 according to their latest regulatory filings, with 93 funds opening new positions, 115 increasing their positions, 84 reducing their positions, and 47 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
333
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$26.7M
Puts
$16.9M
Net Calls
Net Calls Change

Top Buyers

1 +$198M
2 +$105M
3 +$87.9M
4
Goldman Sachs
Goldman Sachs
New York
+$62M
5
Citadel Advisors
Citadel Advisors
Florida
+$49.7M

Top Sellers

1 -$235M
2 -$104M
3 -$51.7M
4
Holocene Advisors
Holocene Advisors
New York
-$47.6M
5
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
-$40.7M
Name Holding Trade Value Shares
Change
Change in
Stake
State of Tennessee, Department of Treasury
126
State of Tennessee, Department of Treasury
Tennessee
$1.51M
XT
127
XTX Topco
Cayman Islands
$1.5M
MOACM
128
Mutual of America Capital Management
New York
$1.49M
SEI Investments
129
SEI Investments
Pennsylvania
$1.49M
STA
130
Summit Trail Advisors
New York
$1.46M
PCM
131
Polymer Capital Management
New York
$1.46M
Universal-Beteiligungs- und Servicegesellschaft
132
Universal-Beteiligungs- und Servicegesellschaft
Germany
$1.46M
Creative Planning
133
Creative Planning
Kansas
$1.4M
Mitsubishi UFJ Asset Management
134
Mitsubishi UFJ Asset Management
Japan
$1.32M
ASRS
135
Arizona State Retirement System
Arizona
$1.24M
YCM
136
Yousif Capital Management
Michigan
$1.23M
SSA
137
Schonfeld Strategic Advisors
New York
$1.19M
WLC
138
Walnut Level Capital
Colorado
$1.17M
VIA
139
Vanguard Investments Australia
Australia
$1.16M
Ohio Public Employees Retirement System (OPERS)
140
Ohio Public Employees Retirement System (OPERS)
Ohio
$1.14M
LSERS
141
Louisiana State Employees Retirement System
Louisiana
$1.13M
II
142
Inspire Investing
Idaho
$1.12M
VF
143
Virtu Financial
New York
$1.11M
VPIM
144
Vanguard Personalized Indexing Management
California
$1.11M
Handelsbanken Fonder
145
Handelsbanken Fonder
Sweden
$1.04M
KK
146
KLP Kapitalforvaltning
Norway
$993K
COPPSERS
147
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$976K
WG
148
Winton Group
United Kingdom
$961K
ACM
149
Aster Capital Management
United Arab Emirates
$943K
SOMRS
150
State of Michigan Retirement System
Michigan
$935K