Skip to content
Disclosery

WLK WESTLAKE CORPORATION

Follow

COM (common), issuer CIK 1262823

326 managers (339 13F filers) reported a position in WLK shares at 2026-03-31, 44,111,547 shares in all. 86 filers opened a position and 47 filers sold out during the quarter.

Managers
326
13F filers
339
New
86
Added
117
Reduced
87
Sold out
47
Shares held by filers
44,111,547

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
Orbis Allan Gray Ltdin group Orbis Allan Gray Ltd5,293,519$618M2.61%+906,88413F-HRTimelineGroup
Capital World Investors4,211,006$492M0.07%+2,039,68213F-HRTimeline
VANGUARD GROUP INCgroup of 7 filers holding3,497,750$409M+3,487,995Timeline
BlackRock, Inc.in group BlackRock, Inc.3,079,087$360M0.01%-182,34613F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/2,407,457$281M0.03%+198,74213F-HRTimeline
BRANDES INVESTMENT PARTNERS, LPin group BRANDES INVESTMENT PARTNERS, …1,842,650$215M1.52%+172,32313F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,793,517$210M0.04%-2,427,20013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding1,792,671$209M+219,955Timeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,466,020$171M0.04%-419,65813F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,393,327$163M0.02%+639,37413F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,380,493$161M0.01%-16,14013F-HRTimelineGroup
FMR LLCin group FMR LLC1,312,473$153M0.01%+1,083,63013F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…943,975$110M0.15%+67,09013F-HRTimelineGroup
Holocene Advisors, LP730,035$85.3M0.21%-490,58713F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC715,586$83.6M0.06%+512,28313F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC614,334$71.8M<0.01%+19,41213F-HRTimelineGroup
Nuveen, LLCin group TIAA564,744$66M0.02%-88,16513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY486,508$56.8M<0.01%-273,11513F-HRTimelineGroup
Erste Asset Management GmbHin group Erste Asset Management GmbH395,000$45.8M0.42%-25,00013F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP374,508$43.4M0.04%new13F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management369,672$43.2M0.08%new13F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC349,035$40.8M0.17%-319,37013F-HRTimeline
Woodline Partners LP337,075$39.4M0.15%-291,08413F-HR/ATimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co311,762$36.4M0.01%+14,51413F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND309,626$36.2M0.05%013F-HRTimeline
ProShare Advisors LLC295,811$34.6M0.05%-139,45013F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …285,434$33.3M0.06%-221,32213F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson269,783$31.5M0.02%-64,81013F-HR/ATimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP269,149$31.4M<0.01%+51513F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.266,651$31.2M0.05%+158,92113F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC260,070$30.4M0.01%+239,53513F-HRTimelineGroup
VAN LANSCHOT KEMPEN INVESTMENT MANAGEME…244,308$28.5M0.25%+8,38913F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/236,986$27.7M<0.01%+52,55113F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.233,183$27.2M0.02%-253,09813F-HRTimelineGroup
Merewether Investment Management, LP219,900$25.7M0.5%-168,20013F-HRTimeline
DEPRINCE RACE & ZOLLO INC203,366$23.8M0.45%-86013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp181,070$21.2M<0.01%+6,75213F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.179,402$21M<0.01%-33,75513F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…178,160$20.8M0.16%+12,84513F-HRTimeline
Ceredex Value Advisors LLC177,900$20.8M0.65%-57,71813F-HRTimeline
Man Group plcin group Man Group plc160,286$18.7M0.04%new13F-HRTimelineGroup
ROBOTTI ROBERTin group ROBOTTI ROBERT145,004$16.9M2.64%-111,24013F-HRTimelineGroup
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…135,808$15.9M0.13%+132,68913F-HRTimelineGroup
SPROTT INC.132,610$15.5M0.47%-7,39013F-HRTimeline
Capital International Investorsgroup of 3 filers holding122,293$14.3MnewTimeline
Quantinno Capital Management LP121,444$14.2M0.02%+5,07813F-HRTimeline
Recurrent Investment Advisors LLC112,790$13.2M0.79%+37,15713F-HRTimeline
Yaupon Capital Management LP107,044$12.5M0.62%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN106,705$12.5M<0.01%+14,82613F-HR/ATimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC105,686$12.3M0.01%new13F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA103,951$12.1M<0.01%+18,68113F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP102,299$12M0.01%-44,11213F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO97,739$11.3M<0.01%+30,41913F-HR/ATimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…89,362$10.4M0.01%-68,95913F-HRTimelineGroup
RHUMBLINE ADVISERS87,304$10.2M0.01%+1,87213F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC84,997$9.93M0.01%-342,75713F-HRTimelineGroup
Meiji Yasuda Asset Management Co Ltd.in group Meiji Yasuda Life Insurance Co79,478$9.28M0.46%new13F-HRTimelineGroup
Swiss National Bank75,900$8.87M0.01%013F-HRTimeline
PDT Partners, LLC75,777$8.85M0.52%+10,80013F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC74,481$8.7M<0.01%+2,76213F-HRTimelineGroup
Thomist Capital Management, LP73,000$8.53M2.92%-38,90013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC72,679$8.49M0.01%-54,41613F-HRTimelineGroup
AGMAN CAPITAL LLC72,283$8.44M6.72%013F-HRTimeline
MACKENZIE FINANCIAL CORP71,968$8.41M0.01%+52,13513F-HRTimeline
Lloyd Harbor Capital Management, LLC62,000$7.24M3.75%new13F-HRTimeline
Rokos Capital Management LLPin group Rokos Capital Management LLP60,800$7.1M0.13%new13F-HRTimelineGroup
Walleye Capital LLCgroup of 2 filers holding60,328$7.05M+12,671Timeline
CITIGROUP INCin group CITIGROUP INC54,559$6.37M<0.01%+27,22213F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc50,737$5.93M<0.01%-6,51413F-HRTimelineGroup
Albar Capital Partners LLP48,814$5.7M0.92%new13F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC47,820$5.55M0.02%new13F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC45,578$5.32M<0.01%-1,068,24113F-HRTimeline
Trek Financial, LLC45,296$5.29M0.28%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…44,459$5.19M0.01%+8,36113F-HRTimeline
OCCUDO QUANTITATIVE STRATEGIES LP44,430$5.12M0.28%+19,25013F-HRTimeline
ALLIANCEBERNSTEIN L.P.67,315$4.98M<0.01%-1,13313F-HRTimeline
Engineers Gate Manager LP42,499$4.96M0.06%-246,75613F-HRTimeline
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…42,043$4.91M0.05%+35,00613F-HRTimelineGroup
Retirement Systems of Alabama40,886$4.78M0.02%+85913F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/39,038$4.56M<0.01%+12,11513F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC38,532$4.5M0.01%new13F-HRTimelineGroup
Twin Tree Management, LP35,977$4.2M0.88%new13F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP34,971$4.06M0.01%-15,74413F-HRTimelineGroup
Gotham Asset Management, LLC34,564$4.04M0.01%+25,36513F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding33,371$3.9M+9,570Timeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …33,295$3.89M<0.01%-15613F-HRTimelineGroup
Boston Partnersin group Boston Trust Walden Corp31,696$3.7M<0.01%new13F-HRTimelineGroup
Occam Crest Management LP29,256$3.42M2.13%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC28,487$3.33M<0.01%-20,63013F-HR/ATimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC28,046$3.28M<0.01%+17613F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD25,252$2.95M0.01%-45913F-HRTimeline
California Public Employees Retirement …25,000$2.92M<0.01%-21,76013F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP24,925$2.91M<0.01%+6,00413F-HRTimelineGroup
SG Americas Securities, LLC24,576$2.87M<0.01%-12,43513F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…24,115$2.82M0.01%013F-HRTimeline
Quantbot Technologies LP23,936$2.8M0.11%-15,67113F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…23,658$2.76M0.01%new13F-HRTimelineGroup
AMG National Trust Bank23,041$2.69M0.06%-28913F-HRTimeline
Duquesne Family Office LLC21,194$2.48M0.08%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…20,479$2.39M0.07%+39713F-HRTimelineGroup
South Dakota Investment Council20,235$2.36M0.05%013F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co20,005$2.34M<0.01%+67413F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC20,020$2.34M<0.01%+1,71913F-HRTimelineGroup
KBC Group NVin group KBC Group NV19,432$2.27M0.01%-2,79013F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…19,174$2.24M<0.01%+5,80713F-HRTimeline
Dana Investment Advisors, Inc.18,965$2.22M0.07%-19913F-HRTimeline
WORLDQUANT MILLENNIUM ADVISORS LLC18,374$2.15M0.01%new13F-HRTimeline
Edgestream Partners, L.P.17,681$2.07M0.07%+10,58613F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…16,406$1.92M0.01%+11113F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…16,045$1.87M<0.01%+15,48313F-HRTimelineGroup
STOREBRAND ASSET MANAGEMENT AS15,405$1.8M0.01%013F-HRTimeline
AMALGAMATED BANK15,006$1.75M0.01%-3913F-HRTimeline
NOMURA ASSET MANAGEMENT CO LTDgroup of 2 filers holding14,538$1.7M+13,642Timeline
BARCLAYS PLCin group BARCLAYS PLC14,456$1.69M<0.01%-52,15713F-HRTimelineGroup
SummitTX Capital, L.P.14,335$1.67M0.05%new13F-HRTimeline
Treasurer of the State of North Carolina14,304$1.67M0.01%+30613F-HRTimeline
LPL Financial LLC13,059$1.53M<0.01%+41113F-HRTimeline
State of Tennessee, Department of Treas…12,946$1.51M0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd12,878$1.5M0.03%new13F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…12,780$1.49M0.02%-1,10013F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO12,769$1.49M<0.01%-15,67313F-HRTimelineGroup
Summit Trail Advisors, LLC12,524$1.46M0.02%-3,03713F-HRTimeline
Polymer Capital Management (US) LLC12,520$1.46M0.22%+6,02013F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …12,479$1.46M<0.01%+3,29713F-HRTimelineGroup
Creative Planningin group Creative Planning11,961$1.4M<0.01%+4,27613F-HRTimelineGroup
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…11,262$1.32M<0.01%+1,28213F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM10,580$1.24M0.01%-21413F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC10,518$1.23M0.01%-53713F-HRTimeline
Schonfeld Strategic Advisors LLC10,182$1.19M0.01%+4,17013F-HRTimeline
Walnut Level Capital LLC10,000$1.17M1.33%-1,40413F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…9,724$1.14M<0.01%-33213F-HRTimeline
Louisiana State Employees Retirement Sy…9,700$1.13M0.02%+50013F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC9,576$1.12M0.07%+5,17213F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC9,532$1.11M0.05%new13F-HRTimelineGroup
Handelsbanken Fonder AB8,900$1.04M<0.01%013F-HRTimeline
KLP KAPITALFORVALTNING AS8,500$993K<0.01%+30013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…8,356$976K<0.01%+1013F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd8,229$961K0.03%new13F-HRTimelineGroup
Aster Capital Management (DIFC) Ltd9,428$943K0.31%+8,60813F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM8,000$935K<0.01%+10013F-HRTimeline
TWIN FOCUS CAPITAL PARTNERS, LLC8,000$935K0.11%new13F-HRTimeline
Total Wealth Planning & Management, Inc.7,707$900K0.71%+4,75213F-HRTimeline
CAPITAL GROUP INVESTMENT MANAGEMENT PTE…in group CAPITAL GROUP INVESTMENT MANA…7,693$899K0.15%new13F-HRTimelineGroup
Eurizon Capital SGR S.p.A.7,518$878K<0.01%new13F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…7,514$878K<0.01%+413F-HRTimelineGroup
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding7,474$873K+12Timeline
Dynamic Technology Lab Private Ltd7,352$859K0.14%new13F-HRTimeline
GATEWAY INVESTMENT ADVISERS LLC7,147$835K0.01%new13F-HRTimeline
First Eagle Investment Management, LLCin group First Eagle Investment Manage…7,118$832K<0.01%+7,06513F-HR/ATimelineGroup
NEW MEXICO EDUCATIONAL RETIREMENT BOARD7,000$818K0.03%013F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND6,868$802K0.01%+20013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS6,690$782K<0.01%-85,53313F-HRTimelineGroup
Pettee Investors, Inc.6,711$774K0.4%013F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP6,575$768K0.01%new13F-HRTimelineGroup
Concentric Capital Strategies, LP6,517$761K0.07%new13F-HRTimeline
RiverFront Investment Group, LLC6,497$759K0.01%013F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…6,059$708K<0.01%+3413F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV5,717$668K<0.01%+1,79413F-HRTimeline
Brooklyn Investment Group5,705$666K0.02%new13F-HRTimeline
Police & Firemen's Retirement System of…5,684$664K0.01%013F-HRTimeline
Advisors Asset Management, Inc.5,647$660K0.01%-40013F-HRTimeline
Storgate, LLC5,510$644K0.5%+13013F-HRTimeline
Unison Advisors LLC5,247$613K0.05%+3213F-HRTimeline
Caprock Group, LLC5,171$604K0.01%new13F-HRTimeline
GSA CAPITAL PARTNERS LLP5,106$596K0.04%new13F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC4,960$579K<0.01%+31113F-HRTimelineGroup
Hartree Partners, LP4,300$502K0.11%new13F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…4,143$484K<0.01%-1,08213F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC4,119$481K<0.01%-5513F-HRTimelineGroup
XPONANCE LLC3,988$466K<0.01%+88713F-HRTimeline
CIBC Asset Management Inc3,977$465K<0.01%013F-HRTimeline
Cetera Investment Advisers3,921$458K<0.01%+76713F-HRTimeline
Pacer Advisors, Inc.3,844$449K<0.01%-14413F-HR/ATimeline
Marnell Management LLC3,802$444K0.3%-7,89813F-HRTimeline
Atria Investments, Inc3,786$442K<0.01%-28613F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC3,651$427K0.01%new13F-HRTimeline
GAMCO INVESTORS, INC. ET ALin group GAMCO Investors (Gabelli)3,491$408K<0.01%-45013F-HRTimelineGroup
State of Alaska, Department of Revenue3,354$391K<0.01%+4513F-HRTimeline
AlphaGrep UK Ltd3,316$387K0.11%-15513F-HRTimeline
Sanctuary Advisors, LLC3,272$382K<0.01%-16913F-HRTimeline
Havemeyer Place LP3,250$380K0.04%new13F-HRTimeline
Claret Asset Management Corp3,007$351K0.04%013F-HRTimeline
THOMPSON SIEGEL & WALMSLEY LLC2,976$348K0.01%-533,31413F-HRTimeline
TWINBEECH CAPITAL LP2,950$345K0.04%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC2,931$342K<0.01%-19013F-HRTimelineGroup
Odyssean, LLC2,903$339K0.12%013F-HRTimeline
Integrated Wealth Concepts LLC2,856$334K<0.01%new13F-HRTimeline
iSAM Funds (UK) Ltdin group iSAM Funds (UK) Ltd2,835$331K0.16%+713F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…2,588$309K<0.01%new13F-HRTimeline
Archer Investment Corp2,493$291K0.06%new13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC2,436$285K<0.01%new13F-HRTimelineGroup
SECURIAN ASSET MANAGEMENT, INC2,403$281K0.01%013F-HRTimeline
MFA WEALTH ADVISORS, LLC2,382$278K0.05%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\2,370$277K<0.01%+1,28613F-HRTimelineGroup
HighTower Advisors, LLC2,305$269K<0.01%new13F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…2,253$263K<0.01%new13F-HRTimelineGroup
CWM, LLCin group CWM, LLC2,249$263K<0.01%+1,90313F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC2,228$260K<0.01%new13F-HRTimelineGroup
BROWN ADVISORY INCin group BROWN ADVISORY INC2,226$260K<0.01%new13F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD2,210$258K<0.01%-5,72113F-HRTimeline