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Westlake Corp

304 hedge funds and large institutions have $2.99B invested in Westlake Corp in 2025 Q2 according to their latest regulatory filings, with 46 funds opening new positions, 123 increasing their positions, 104 reducing their positions, and 93 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

51% less first-time investments, than exits

New positions opened: 46 | Existing positions closed: 93

66% less call options, than puts

Call options by funds: $19.5M | Put options by funds: $58.1M

Holders
304
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$19.5M
Puts
$58.1M
Net Calls
Net Calls Change

Top Buyers

1 +$155M
2 +$78.7M
3 +$62.5M
4
EGM
Engineers Gate Manager
New York
+$26.4M
5
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$25.5M

Top Sellers

1 -$129M
2 -$63.8M
3 -$33.6M
4
ICP
Ilex Capital Partners
United Kingdom
-$32.3M
5
BlackRock
BlackRock
New York
-$25.2M
Name Holding Trade Value Shares
Change
Change in
Stake
GI
126
GAMCO Investors
Connecticut
$878K
QC
127
Quadrature Capital
United Kingdom
$865K
OAC
128
OMERS Administration Corp
Ontario, Canada
$864K
Creative Planning
129
Creative Planning
Kansas
$848K
SSA
130
Schonfeld Strategic Advisors
New York
$827K
Ohio Public Employees Retirement System (OPERS)
131
Ohio Public Employees Retirement System (OPERS)
Ohio
$788K
Aberdeen Group
132
Aberdeen Group
United Kingdom
$767K
VPIM
133
Vanguard Personalized Indexing Management
California
$763K
Sumitomo Mitsui Trust Group
134
Sumitomo Mitsui Trust Group
Japan
$745K
LSERS
135
Louisiana State Employees Retirement System
Louisiana
$714K
XT
136
XTX Topco
Cayman Islands
$712K
Pathstone Holdings
137
Pathstone Holdings
New Jersey
$684K
Corient Private Wealth
138
Corient Private Wealth
Florida
$681K
Universal-Beteiligungs- und Servicegesellschaft
139
Universal-Beteiligungs- und Servicegesellschaft
Germany
$675K
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
140
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$668K
COPPSERS
141
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$650K
Handelsbanken Fonder
142
Handelsbanken Fonder
Sweden
$645K
Marshall Wace
143
Marshall Wace
United Kingdom
$616K
SOMRS
144
State of Michigan Retirement System
Michigan
$607K
QCG
145
Quadrant Capital Group
Ohio
$603K
Thrivent Financial for Lutherans
146
Thrivent Financial for Lutherans
Minnesota
$596K
FC
147
FORA Capital
Florida
$595K
CI Investments Inc
148
CI Investments Inc
Ontario, Canada
$584K
ET
149
Entropy Technologies
New York
$581K
AAM
150
Advisors Asset Management
Colorado
$581K