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Disclosery

WLK WESTLAKE CORPORATION

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COM (common), issuer CIK 1262823

346 managers (358 13F filers) reported a position in WLK shares at 2026-06-30, 39,729,816 shares in all. 81 filers opened a position and 64 filers sold out during the quarter.

Managers
346
13F filers
358
New
81
Added
109
Reduced
119
Sold out
64
Shares held by filers
39,729,816

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 7 filers holding3,486,983$255M-10,767Timeline
BlackRock, Inc.in group BlackRock, Inc.3,294,162$240M<0.01%+215,07513F-HRTimelineGroup
Capital World Investors2,842,348$207M0.02%-1,368,65813F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/2,206,676$161M0.02%-200,78113F-HRTimeline
Orbis Allan Gray Ltdin group Orbis Allan Gray Ltd2,084,364$152M0.52%-3,209,15513F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP2,051,554$150M0.03%+585,53413F-HRTimelineGroup
BRANDES INVESTMENT PARTNERS, LPin group BRANDES INVESTMENT PARTNERS, …1,572,939$115M0.8%-269,71113F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC1,570,453$115M0.04%+1,310,38313F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,453,407$106M<0.01%+72,91413F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,280,873$93.5M0.01%-112,45413F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding1,248,840$91.2M-543,831Timeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,054,868$77M0.04%+339,28213F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…1,023,403$74.7M0.09%+79,42813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC718,597$52.5M<0.01%+104,26313F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC709,355$51.8M0.19%+360,32013F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management625,859$45.7M0.08%+256,18713F-HRTimelineGroup
Woodline Partners LP451,986$33M0.1%+114,91113F-HRTimeline
Nuveen, LLCin group TIAA446,479$32.6M0.01%-118,26513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY437,571$31.9M<0.01%-48,93713F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP375,889$28.1M0.02%+1,38113F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC366,074$26.7M0.02%+281,07713F-HRTimelineGroup
FMR LLCin group FMR LLC361,243$26.4M<0.01%-951,23013F-HRTimelineGroup
ExodusPoint Capital Management, LP327,195$23.9M0.22%new13F-HRTimeline
Qube Research & Technologies Ltd321,718$23.5M0.03%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co318,823$23.3M<0.01%+7,06113F-HRTimelineGroup
Erste Asset Management GmbHin group Erste Asset Management GmbH305,000$22.8M0.18%-90,00013F-HRTimelineGroup
VAN LANSCHOT KEMPEN INVESTMENT MANAGEME…268,434$19.6M0.15%+24,12613F-HRTimeline
Jupiter Topco LLCin group Janus Henderson267,748$19.5M0.01%13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP262,926$19.2M<0.01%-6,22313F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding256,551$18.7M+223,180Timeline
ROBOTTI ROBERTin group ROBOTTI ROBERT235,379$17.2M2.77%+90,37513F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/232,213$17M<0.01%-4,77313F-HRTimelineGroup
ProShare Advisors LLC228,319$16.7M0.02%-67,49213F-HRTimeline
NORGES BANK214,101$15.6M<0.01%new13F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC209,861$15.3M0.14%new13F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.200,534$14.6M0.01%-32,64913F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…194,362$14.2M0.01%+105,00013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.190,951$13.9M<0.01%+11,54913F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO163,287$12.3M<0.01%+65,54813F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC166,436$12.1M0.01%+93,75713F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp163,455$11.9M<0.01%-17,61513F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …163,075$11.9M0.02%-122,35913F-HRTimelineGroup
SPROTT INC.160,110$11.7M0.39%+27,50013F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…156,757$11.4M0.08%-21,40313F-HRTimeline
Campbell & CO Investment Adviser LLC148,180$10.8M0.57%new13F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…141,816$10.4M<0.01%-1,651,70113F-HRTimelineGroup
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…135,361$9.88M0.31%new13F-HRTimelineGroup
Recurrent Investment Advisors LLC128,771$9.4M0.58%+15,98113F-HRTimeline
Quantinno Capital Management LP123,228$9M0.01%+1,78413F-HRTimeline
HRT FINANCIAL LP116,395$8.5M0.02%new13F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP111,574$8.14M0.01%new13F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL110,710$8.08M0.03%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN105,936$7.73M<0.01%-76913F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.65,993$7.71M<0.01%-1,32213F-HRTimeline
MACKENZIE FINANCIAL CORP104,903$7.66M0.01%+32,93513F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA96,772$7.07M<0.01%-7,17913F-HRTimelineGroup
Thomist Capital Management, LP96,200$7.02M2.59%+23,20013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS94,400$6.89M<0.01%+87,71013F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.89,731$6.55M0.01%new13F-HRTimelineGroup
Alberta Investment Management Corp89,200$6.51M0.04%new13F-HRTimeline
RHUMBLINE ADVISERS86,305$6.3M<0.01%-99913F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding82,847$6.05M+22,519Timeline
Meiji Yasuda Asset Management Co Ltd.in group Meiji Yasuda Life Insurance Co82,778$6.04M0.27%+3,30013F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC79,967$5.84M0.01%+41,43513F-HRTimelineGroup
NATIXISin group Natixis Investment Managers77,117$5.63M0.03%new13F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC76,055$5.55M0.01%+28,23513F-HRTimelineGroup
PDT Partners, LLC75,777$5.53M0.29%013F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC75,653$5.52M<0.01%+1,17213F-HRTimelineGroup
AGMAN CAPITAL LLC71,465$5.22M3.29%-81813F-HRTimeline
Engineers Gate Manager LP71,301$5.2M0.07%+28,80213F-HRTimeline
Swiss National Bank64,200$4.69M<0.01%-11,70013F-HRTimeline
SG Americas Securities, LLC59,116$4.32M<0.01%+34,54013F-HRTimeline
Turas Capital Management LP58,800$4.29M1.97%new13F-HRTimeline
Assenagon Asset Management S.A.55,289$4.04M0.01%new13F-HR/ATimeline
Merewether Investment Management, LP53,439$3.9M0.07%-166,46113F-HRTimeline
AXQ CAPITAL, LP51,437$3.75M0.41%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc50,025$3.65M<0.01%-71213F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC47,319$3.45M<0.01%new13F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP45,357$3.31M<0.01%new13F-HRTimelineGroup
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…41,791$3.05M0.02%-25213F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND40,926$2.99M<0.01%-268,70013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …37,155$2.71M<0.01%+3,86013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…36,900$2.69M<0.01%-7,55913F-HR/ATimeline
CITIGROUP INCin group CITIGROUP INC36,569$2.67M<0.01%-17,99013F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD35,823$2.62M0.01%+10,57113F-HRTimeline
OCCUDO QUANTITATIVE STRATEGIES LP35,695$2.61M0.14%-8,73513F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/35,590$2.6M<0.01%-3,44813F-HRTimelineGroup
HITE Hedge Asset Management LLC34,589$2.52M0.14%new13F-HRTimeline
Retirement Systems of Alabama34,454$2.52M0.01%-6,43213F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC34,498$2.52M<0.01%new13F-HRTimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC32,600$2.38M0.01%+32,44313F-HRTimeline
ABN AMRO INVESTMENT SOLUTIONSin group ABN AMRO INVESTMENT SOLUTIONS31,597$2.31M0.02%new13F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC31,288$2.28M<0.01%+2,80113F-HRTimelineGroup
WORLDQUANT MILLENNIUM ADVISORS LLC31,204$2.28M0.01%+12,83013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC29,586$2.16M<0.01%+1,54013F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP27,496$2.01M<0.01%-74,80313F-HRTimelineGroup
Freestone Grove Partners LP27,248$1.99M0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC26,524$1.94M<0.01%+12,06813F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV26,477$1.93M<0.01%+20,76013F-HR/ATimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP26,128$1.91M<0.01%+1,20313F-HRTimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/25,924$1.89M<0.01%+25,74213F-HRTimelineGroup
Treasurer of the State of North Carolina25,716$1.88M<0.01%+11,41213F-HRTimeline
Man Group plcin group Man Group plc25,705$1.88M<0.01%-134,58113F-HRTimelineGroup
Creative Planningin group Creative Planning25,595$1.87M<0.01%+13,63413F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC24,162$1.76M<0.01%+4,14213F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…23,505$1.72M<0.01%-61013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC23,272$1.7M<0.01%new13F-HRTimelineGroup
Vident Advisory, LLCin group Vident Advisory, LLC23,139$1.69M0.01%new13F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC21,762$1.59M<0.01%-83,92413F-HRTimelineGroup
Summit Trail Advisors, LLC21,266$1.55M0.02%+8,74213F-HRTimeline
Entropy Technologies, LP20,610$1.5M0.06%new13F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co20,614$1.5M<0.01%+60913F-HRTimelineGroup
South Dakota Investment Council19,335$1.41M0.02%-90013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…19,174$1.4M<0.01%013F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…21,697$1.4M<0.01%+19,10913F-HRTimeline
Dana Investment Advisors, Inc.18,847$1.38M0.04%-11813F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding18,630$1.36M+7,368Timeline
Capital International Investorsgroup of 3 filers holding18,330$1.34M-103,963Timeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…18,251$1.33M0.02%new13F-HRTimelineGroup
Verition Fund Management LLC17,000$1.24M0.01%+15,00013F-HR/ATimeline
Magnetar Financial LLCin group Magnetar Financial LLC16,922$1.24M0.01%new13F-HRTimelineGroup
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A16,285$1.19M<0.01%new13F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…16,031$1.17M0.01%-37513F-HRTimelineGroup
Bleakley Financial Group, LLC15,907$1.16M0.01%new13F-HRTimeline
STOREBRAND ASSET MANAGEMENT AS15,405$1.12M<0.01%013F-HRTimeline
Quantbot Technologies LP15,303$1.12M0.04%-8,63313F-HRTimeline
Gotham Asset Management, LLC15,253$1.11M<0.01%-19,31113F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…14,892$1.09M0.03%-5,58713F-HRTimelineGroup
LPL Financial LLC14,787$1.08M<0.01%+1,72813F-HRTimeline
AMALGAMATED BANK14,729$1.07M0.01%-27713F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD14,210$1.04M<0.01%+12,00013F-HRTimeline
Polymer Capital Management (US) LLC14,143$1.03M0.15%+1,62313F-HRTimeline
Storgate, LLC13,795$1.01M0.21%+8,28513F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC13,766$1M<0.01%+11,54013F-HRTimelineGroup
Neo Ivy Capital Management13,509$986K0.23%new13F-HRTimeline
TWIN CAPITAL MANAGEMENT INC13,135$959K0.1%new13F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC12,996$949K0.04%+3,42013F-HRTimelineGroup
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…12,965$946K<0.01%-10,69313F-HRTimelineGroup
KBC Group NVin group KBC Group NV12,878$940K<0.01%-6,55413F-HRTimelineGroup
State of Tennessee, Department of Treas…12,717$928K<0.01%-22913F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…12,363$902K0.01%-41713F-HRTimelineGroup
AlphaGrep UK Ltd12,289$897K0.27%+8,97313F-HRTimeline
Schonfeld Strategic Advisors LLC12,231$893K<0.01%+2,04913F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …11,638$850K<0.01%-84113F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO10,896$795K<0.01%-1,87313F-HRTimelineGroup
Graham Capital Management, L.P.10,704$781K0.02%new13F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…10,578$772K<0.01%-5,46713F-HRTimelineGroup
MIRABELLA FINANCIAL SERVICES LLP10,550$770K0.07%new13F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC9,800$715K0.01%-71813F-HRTimeline
Louisiana State Employees Retirement Sy…9,700$708K0.01%013F-HR/ATimeline
Fieldview Capital Management, LLC9,445$689K0.2%new13F-HRTimeline
SummitTX Capital, L.P.9,414$687K0.02%-4,92113F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…9,392$686K<0.01%-33213F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…9,370$684K<0.01%new13F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding9,224$673KnewTimeline
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD9,193$671K<0.01%new13F-HRTimelineGroup
Bridgefront Capital, LLC9,068$662K0.17%new13F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM8,836$645K<0.01%-1,74413F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC8,729$637K0.02%-80313F-HRTimelineGroup
KLP KAPITALFORVALTNING AS8,500$620K<0.01%013F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP8,143$594K<0.01%-26,82813F-HR/ATimelineGroup
CAPTRUST FINANCIAL ADVISORS8,087$590K<0.01%new13F-HRTimeline
Numerai GP LLC8,035$587K0.05%new13F-HRTimeline
TWIN FOCUS CAPITAL PARTNERS, LLC8,000$584K0.06%013F-HRTimeline
Handelsbanken Fonder AB8,000$584K<0.01%-90013F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM7,800$569K<0.01%-20013F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding7,493$547K+19Timeline
Marnell Management LLC7,402$540K0.27%+3,60013F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…7,397$540K<0.01%-11713F-HRTimelineGroup
Chicago Partners Investment Group LLC6,931$521K0.01%new13F-HRTimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD7,000$511K0.01%013F-HRTimeline
Dynamic Technology Lab Private Ltd6,975$509K0.11%-37713F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP6,899$504K0.01%+32413F-HRTimelineGroup
OREGON PUBLIC EMPLOYEES RETIREMENT FUND6,868$501K0.01%013F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP6,817$498K0.03%new13F-HRTimeline
Pinnacle Financial Partners, Inc.in group Pinnacle Financial Partners, …6,813$497K<0.01%new13F-HRTimelineGroup
Pettee Investors, Inc.6,711$490K0.24%013F-HRTimeline
GSA CAPITAL PARTNERS LLP6,310$461K0.03%+1,20413F-HRTimeline
RiverFront Investment Group, LLC6,300$460K0.01%-19713F-HRTimeline
OXFORD ASSET MANAGEMENT LLP6,291$459K0.23%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
IEQ CAPITAL, LLC6,267$457K<0.01%new13F-HRTimeline
TWO SIGMA SECURITIES, LLC6,190$452K0.04%new13F-HRTimeline
Havemeyer Place LP6,007$439K0.04%+2,75713F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd6,003$438K0.01%-6,87513F-HRTimelineGroup
BRIGHTON JONES LLC5,843$427K0.01%new13F-HRTimeline
Total Wealth Planning & Management, Inc.5,654$413K0.3%-2,05313F-HRTimeline
Police & Firemen's Retirement System of…5,591$408K<0.01%-9313F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…5,483$400K<0.01%-57613F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.5,393$394K0.07%new13F-HRTimeline
Atria Investments, Inc5,365$392K<0.01%+1,57913F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC5,297$387K<0.01%-40,28113F-HRTimeline
Unison Advisors LLC5,271$385K0.03%+2413F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…5,225$381K<0.01%+1,08213F-HRTimeline
Y-Intercept (Hong Kong) Ltd5,128$374K0.01%new13F-HRTimeline
MAI Capital Management5,077$371K<0.01%+3,44613F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC5,038$368K<0.01%+7813F-HRTimelineGroup
Centiva Capital, LP5,037$368K0.01%new13F-HRTimeline
Sanctuary Advisors, LLC4,985$364K<0.01%+1,71313F-HRTimeline
Aquatic Capital Management LLC4,884$357K0.01%new13F-HRTimeline
Scientech Research LLC4,813$351K0.28%new13F-HRTimeline