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Westlake Corp
WLK

Overview Fund Activity

303 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, 124 increasing their positions, 103 reducing their positions, and 94 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
303
Holders Change
-54
Holders Change %
-15.13%
% of All Funds
4.06%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.03%
New
46
Increased
124
Reduced
103
Closed
94
Calls
$19.5M
Puts
$58.1M
Net Calls
-$38.6M
Net Calls Change
+$26.8M

Top Buyers

1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$155M
2
BIP
Brandes Investment Partners
California
+$78.7M
3
AP
Antipodes Partners
Australia
+$62.5M
4
EGM
Engineers Gate Manager
New York
+$26.4M
5
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$25.5M

Top Sellers

1
Capital World Investors
Capital World Investors
California
-$129M
2
Citadel Advisors
Citadel Advisors
Florida
-$63.8M
3
Balyasny Asset Management
Balyasny Asset Management
Illinois
-$33.6M
4
ICP
Ilex Capital Partners
United Kingdom
-$32.3M
5
BlackRock
BlackRock
New York
-$25.2M
Name Holding Trade Value Shares
Change 		Shares
Change %
TCM
76
Thomist Capital Management
Texas
$5.45M +$1.94M +25,500 +55%
Barclays
77
Barclays
United Kingdom
$5.39M -$2.72M -35,781 -33%
AllianceBernstein
78
AllianceBernstein
Tennessee
$5.21M +$10.9K +144 +0.2%
California Public Employees Retirement System
79
California Public Employees Retirement System
California
$4.55M +$79.1K +1,042 +2%
SG Americas Securities
80
SG Americas Securities
New York
$4.14M -$232K -3,055 -5%
JIM
81
JCP Investment Management
Texas
$4.02M +$4.02M +53,000 New
CCS
82
Concentric Capital Strategies
Connecticut
$4.02M +$4.02M +52,887 New
Canada Pension Plan Investment Board
83
Canada Pension Plan Investment Board
Ontario, Canada
$3.75M +$758K +9,980 +25%
KBC Group
84
KBC Group
Belgium
$3.65M +$1.62M +21,319 +80%
JAG
85
Journey Advisory Group
Kentucky
$3.4M +$3.4M +44,842 New
Verition Fund Management
86
Verition Fund Management
Connecticut
$3.18M -$728K -9,588 -19%
Retirement Systems of Alabama
87
Retirement Systems of Alabama
Alabama
$3.09M +$1.67K +22 +0.1%
Jane Street
88
Jane Street
New York
$2.61M -$3.92M -51,583 -60%
Comerica Bank
89
Comerica Bank
Texas
$2.61M +$281K +3,695 +12%
YIH
90
Y-Intercept (HK)
Hong Kong
$2.47M +$2.47M +32,522 New
QCM
91
Quantinno Capital Management
New York
$2.3M -$7.39M -97,282 -76%
Twin Tree Management
92
Twin Tree Management
Texas
$2.23M +$2.23M +29,360 New
Manulife (Manufacturers Life Insurance)
93
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$2.14M +$12.5K +165 +0.6%
SOADOR
94
State of Alaska Department of Revenue
Alaska
$2.1M -$13.7K -180 -0.6%
BHCM
95
Brevan Howard Capital Management
Jersey
$2.04M +$805K +10,605 +65%
State of Wisconsin Investment Board
96
State of Wisconsin Investment Board
Wisconsin
$1.97M +$26.8K +353 +1%
HSBC Holdings
97
HSBC Holdings
United Kingdom
$1.96M +$1.15M +15,193 +143%
NFC
98
Northeast Financial Consultants
Connecticut
$1.88M +$1.88M +24,800 New
State Board of Administration of Florida Retirement System
99
State Board of Administration of Florida Retirement System
Florida
$1.87M -$252K -3,325 -12%
SEI Investments
100
SEI Investments
Pennsylvania
$1.73M +$1.07M +14,055 +162%
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4
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