Skip to main content
Livermore
Livermore
ZHEN

Westlake Corp

WLK
Exchange
NYSE
Industry
Industrial Organic Chemicals
SEC CIK
0001262823

In the last 90 days, Westlake Corp insiders filed 0 open-market purchases and 1 sale; 360 institutions reported holding it in 13F filings for Q2 2026, worth $2.90B in total; no superinvestor holds it.

13F holders, Q2 2025

Institutional positions in Westlake Corp as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
306
−50 vs. Q1 2025
Shares held
39.4M
+3.00M (+8.3%) vs. Q1 2025
Total value
$2.99B
−$644.8M (−17.7%) vs. Q1 2025
New holders
46
125 more added
Sold out
96
104 more reduced

5 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting WLK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2025: 306 institutions
Q1 2021: 240 institutionsQ2 2021: 276 institutionsQ3 2021: 272 institutionsQ4 2021: 298 institutionsQ1 2022: 328 institutionsQ2 2022: 355 institutionsQ3 2022: 321 institutionsQ4 2022: 344 institutionsQ1 2023: 342 institutionsQ2 2023: 340 institutionsQ3 2023: 335 institutionsQ4 2023: 357 institutionsQ1 2024: 347 institutionsQ2 2024: 382 institutionsQ3 2024: 403 institutionsQ4 2024: 378 institutionsQ1 2025: 361 institutionsQ2 2025: 306 institutionsQ3 2025: 305 institutionsQ4 2025: 298 institutionsQ1 2026: 339 institutionsQ2 2026: 360 institutions
Value heldQ2 2025: $2.99B
Q1 2021: $3.09BQ2 2021: $3.02BQ3 2021: $3.15BQ4 2021: $3.37BQ1 2022: $4.38BQ2 2022: $3.50BQ3 2022: $3.03BQ4 2022: $3.73BQ1 2023: $4.40BQ2 2023: $4.42BQ3 2023: $4.64BQ4 2023: $5.04BQ1 2024: $5.29BQ2 2024: $4.93BQ3 2024: $5.08BQ4 2024: $4.04BQ1 2025: $3.64BQ2 2025: $2.99BQ3 2025: $3.20BQ4 2025: $3.43BQ1 2026: $5.15BQ2 2026: $2.90B
Institutions holding WLK and their total value by quarter
QuarterHoldersValue
Q2 2026360$2.90B
Q1 2026339$5.15B
Q4 2025298$3.43B
Q3 2025305$3.20B
Q2 2025306$2.99B
Q1 2025361$3.64B
Q4 2024378$4.04B
Q3 2024403$5.08B
Q2 2024382$4.93B
Q1 2024347$5.29B
Q4 2023357$5.04B
Q3 2023335$4.64B
Q2 2023340$4.42B
Q1 2023342$4.40B
Q4 2022344$3.73B
Q3 2022321$3.03B
Q2 2022355$3.50B
Q1 2022328$4.38B
Q4 2021298$3.37B
Q3 2021272$3.15B
Q2 2021276$3.02B
Q1 2021240$3.09B

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Westlake Corp; share changes are against Q1 2025.

Institutions holding WLK in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Brandes Investment Partners, LP1,456,871$110.6M1.00%+1,035,851+246.0%Added
FMR LLC1,615,238$122.6M0.01%+66,372+4.3%Added
Price T Rowe Associates Inc2,058,588$156.3M0.02%+2,037,405+9,618.1%Added
BlackRock, Inc.3,328,696$252.7M0.00%−331,710−9.1%Reduced
Vanguard Group Inc3,522,810$267.5M0.00%−27,500−0.8%Reduced
Victory Capital Management Inc3,721,742$282.6M0.18%−178,283−4.6%Reduced
Activest Wealth Management0$00.00%−15−100.0%Sold out
Capital World Investors0$00.00%−1,290,128−100.0%Sold out
Drummond Knight Asset Management Pty Ltd0$00.00%−117,231−100.0%Sold out
Swiss National Bank0$00.00%−109,000−100.0%Sold out
Walnut Level Capital LLC0$00.00%−92,500−100.0%Sold out
HRT Financial LP0$00.00%−68,304−100.0%Sold out
Corebridge Financial, Inc.0$00.00%−36,963−100.0%Sold out
Weiss Asset Management LP0$00.00%−31,702−100.0%Sold out
Danske Bank A/S0$00.00%−28,712−100.0%Sold out
Wealthfront Advisers LLC0$00.00%−24,498−100.0%Sold out
Worldquant Millennium Advisors LLC0$00.00%−22,720−100.0%Sold out
State of New Jersey Common Pension Fund D0$00.00%−17,662−100.0%Sold out
Mitsubishi UFJ Trust & Banking Corp0$00.00%−17,052−100.0%Sold out
Cresset Asset Management, LLC0$00.00%−16,127−100.0%Sold out
Ensign Peak Advisors, Inc0$00.00%−15,899−100.0%Sold out
Pictet Asset Management Holding SA0$00.00%−14,897−100.0%Sold out
Aquatic Capital Management LLC0$00.00%−14,126−100.0%Sold out
Oliver Luxxe Assets LLC0$00.00%−13,885−100.0%Sold out
Mn Services Vermogensbeheer B.V.0$00.00%−13,700−100.0%Sold out
Gries Financial LLC0$00.00%−13,512−100.0%Sold out
Korea Investment CORP0$00.00%−12,611−100.0%Sold out
Asset Management One Co.,Ltd.0$00.00%−12,253−100.0%Sold out
KLP Kapitalforvaltning AS0$00.00%−11,900−100.0%Sold out
Resona Asset Management Co.,Ltd.0$00.00%−11,719−100.0%Sold out
Arizona State Retirement System0$00.00%−11,166−100.0%Sold out
Aigen Investment Management, LP0$00.00%−10,572−100.0%Sold out
ISAM Funds (UK) Ltd0$00.00%−10,300−100.0%Sold out
Axq Capital, LP0$00.00%−10,139−100.0%Sold out
DnB Asset Management AS0$00.00%−9,129−100.0%Sold out
Jefferies Financial Group Inc.0$00.00%−9,108−100.0%Sold out
Skandinaviska Enskilda Banken AB (publ)0$00.00%−9,101−100.0%Sold out
British Columbia Investment Management Corp0$00.00%−7,390−100.0%Sold out
Appian Way Asset Management LP0$00.00%−7,165−100.0%Sold out
Illinois Municipal Retirement Fund0$00.00%−7,075−100.0%Sold out
Ashton Thomas Private Wealth, LLC0$00.00%−7,059−100.0%Sold out
Petrus Trust Company, LTA0$00.00%−6,709−100.0%Sold out
Lighthouse Investment Partners, LLC0$00.00%−6,105−100.0%Sold out
Adage Capital Partners GP, L.L.C.0$00.00%−5,988−100.0%Sold out
O'Shaughnessy Asset Management, LLC0$00.00%−5,831−100.0%Sold out
Allstate Corp0$00.00%−5,807−100.0%Sold out
Toronto Dominion Bank0$00.00%−5,791−100.0%Sold out
Teacher Retirement System of Texas0$00.00%−5,644−100.0%Sold out
Denali Advisors LLC0$00.00%−5,322−100.0%Sold out
Ostrum Asset Management0$00.00%−5,023−100.0%Sold out
Zurcher Kantonalbank (Zurich Cantonalbank)0$00.00%−5,018−100.0%Sold out
Nissay Asset Management Corp0$00.00%−4,940−100.0%Sold out
Wellington Management Group LLP0$00.00%−4,674−100.0%Sold out
IFM Investors Pty Ltd0$00.00%−4,629−100.0%Sold out
Truist Financial Corp0$00.00%−4,581−100.0%Sold out
Sumitomo Mitsui DS Asset Management Company, Ltd0$00.00%−4,512−100.0%Sold out
Quantbot Technologies LP0$00.00%−4,451−100.0%Sold out
OP Asset Management Ltd0$00.00%−4,172−100.0%Sold out
Twinbeech Capital LP0$00.00%−4,036−100.0%Sold out
Oxford Asset Management LLP0$00.00%−3,948−100.0%Sold out
Commonwealth Equity Services, LLC0$00.00%−3,835−100.0%Sold out
TD Asset Management Inc0$00.00%−3,688−100.0%Sold out
SummitTX Capital, L.P.0$00.00%−3,352−100.0%Sold out
Gulf International Bank (UK) Ltd0$00.00%−3,068−100.0%Sold out
Yorktown Management & Research Co Inc0$00.00%−3,050−100.0%Sold out
Daiwa Securities Group Inc.0$00.00%−3,024−100.0%Sold out
Bayesian Capital Management, LP0$00.00%−2,841−100.0%Sold out
Neuberger Berman Group LLC0$00.00%−2,775−100.0%Sold out
111 Capital0$00.00%−2,670−100.0%Sold out
PGGM Investments0$00.00%−2,668−100.0%Sold out
Swiss Life Asset Management Ltd0$00.00%−2,583−100.0%Sold out
HighTower Advisors, LLC0$00.00%−2,548−100.0%Sold out
Nordea Investment Management AB0$00.00%−2,560−100.0%Sold out
Brown Advisory Inc0$00.00%−2,504−100.0%Sold out
Oppenheimer & Co Inc0$00.00%−2,415−100.0%Sold out
Allianz Asset Management GmbH0$00.00%−2,410−100.0%Sold out
Jump Financial, LLC0$00.00%−2,322−100.0%Sold out
Kentucky Retirement Systems0$00.00%−2,289−100.0%Sold out
United Services Automobile Association0$00.00%−2,133−100.0%Sold out
Franklin Resources Inc0$00.00%−2,071−100.0%Sold out
Eagle Global Advisors LLC0$00.00%−2,066−100.0%Sold out
Macquarie Group Ltd0$00.00%−1,426−100.0%Sold out
Vestcor Inc0$00.00%−888−100.0%Sold out
BI Asset Management Fondsmaeglerselskab A/S0$00.00%−622−100.0%Sold out
Caitong International Asset Management Co., Ltd0$00.00%−559−100.0%Sold out
Siemens Fonds Invest GmbH0$00.00%−413−100.0%Sold out
Coldstream Capital Management Inc0$00.00%−289−100.0%Sold out
CIBC Private Wealth Group, LLC0$00.00%−287−100.0%Sold out
Livforsakringsbolaget Skandia, Omsesidigt0$00.00%−200−100.0%Sold out
Mirae Asset Global Investments Co., Ltd.0$00.00%−185−100.0%Sold out
Quent Capital, LLC0$00.00%−165−100.0%Sold out
Simplex Trading, LLC0$00.00%−146−100.0%Sold out
Harbour Investments, Inc.0$00.00%−26−100.0%Sold out
Sierra Ocean, LLC0$00.00%−24−100.0%Sold out
Saudi Central Bank0$00.00%−15−100.0%Sold out
Zions Bancorporation, National Association0$00.00%−14−100.0%Sold out
Capital Advisors, Ltd. LLC0$00.00%−7−100.0%Sold out
SJS Investment Consulting Inc.0$00.00%−9−100.0%Sold out
Global Financial Private Client, LLC0$00.00%−9−100.0%Sold out
Financial Management Professionals, Inc.0$00.00%−2−100.0%Sold out