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Disclosery

WLK WESTLAKE CORPORATION

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COM (common), issuer CIK 1262823

348 managers (360 13F filers) reported a position in WLK shares at 2026-06-30, 39,733,219 shares in all. 81 filers opened a position and 64 filers sold out during the quarter.

Managers
348
13F filers
360
New
81
Added
109
Reduced
119
Sold out
64
Shares held by filers
39,733,219

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
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.4,785$349K<0.01%new13F-HRTimelineGroup
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…4,721$345K<0.01%-131,08713F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…4,691$342K0.01%+3,33513F-HRTimelineGroup
Farringdon Capital, Ltd.4,583$335K0.17%new13F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC4,374$319K<0.01%+25513F-HRTimelineGroup
Jain Global LLC4,093$299K<0.01%new13F-HRTimeline
111 Capital4,081$298K0.05%new13F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …4,031$294K<0.01%new13F-HRTimelineGroup
Hartree Partners, LP4,000$292K0.06%-30013F-HRTimeline
CIBC Asset Management Inc3,977$290K<0.01%013F-HRTimeline
XPONANCE LLC3,928$287K<0.01%-6013F-HRTimeline
ROTHSCHILD INVESTMENT LLC3,892$284K0.01%+3,84513F-HRTimeline
Merit Financial Group, LLC3,859$282K<0.01%new13F-HR/ATimeline
Curi Capital, LLC3,841$280K<0.01%new13F-HRTimeline
Arax Advisory Partners3,773$275K<0.01%+3,54113F-HRTimeline
Pacer Advisors, Inc.3,756$274K<0.01%-8813F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC3,651$267K<0.01%013F-HRTimeline
Core Capital Management & Research, inc.3,339$264K0.14%13F-HRTimeline
Aigen Investment Management, LP3,496$255K0.07%new13F-HRTimeline
GAMCO INVESTORS, INC. ET ALin group GAMCO Investors (Gabelli)3,491$255K<0.01%013F-HRTimelineGroup
Cetera Investment Advisers3,437$251K<0.01%-48413F-HRTimeline
NorthCrest Asset Manangement, LLC3,214$239K0.01%new13F-HRTimeline
State of Alaska, Department of Revenue3,264$238K<0.01%-9013F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…3,072$224K0.01%new13F-HRTimelineGroup
Allworth Financial LP3,054$223K<0.01%+1,35313F-HRTimeline
Claret Asset Management Corp3,026$221K0.02%+1913F-HRTimeline
Integrated Wealth Concepts LLC2,956$216K<0.01%+10013F-HR/ATimeline
Odyssean, LLC2,903$212K0.03%013F-HRTimeline
Bull Harbor Capital LLC2,867$209K0.04%new13F-HRTimeline
First Eagle Investment Management, LLCin group First Eagle Investment Manage…2,835$207K<0.01%-4,28313F-HR/ATimelineGroup
Qsemble Capital Management, LP2,814$205K0.03%new13F-HRTimeline
HB Wealth Management, LLC2,768$202K<0.01%new13F-HRTimeline
Bayforest Capital Ltd2,728$199K0.18%new13F-HRTimeline
SECURIAN ASSET MANAGEMENT, INC2,503$194K0.01%+10013F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.2,574$188K<0.01%-264,07713F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…2,505$183K0.04%+76913F-HRTimelineGroup
Lloyd Advisory Services, LLC.2,472$180K0.07%new13F-HRTimeline
Federation des caisses Desjardins du Qu…2,272$166K<0.01%+28213F-HRTimeline
Caitong International Asset Management …2,253$164K0.02%new13F-HRTimeline
CoreFirst Bank & Trust2,195$160K0.08%013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\2,169$158K<0.01%-20113F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\1,979$144K<0.01%-19113F-HRTimelineGroup
Advisors Asset Management, Inc.1,949$142K<0.01%-3,69813F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.1,945$142K<0.01%-23213F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…1,704$124K<0.01%013F-HRTimeline
Kimelman & Baird, LLC1,500$110K0.01%013F-HR/ATimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…1,270$92.7K<0.01%-25213F-HRTimelineGroup
IFP Advisors, Inc1,171$85.5K<0.01%+1,16913F-HRTimeline
SIGNATUREFD, LLC1,160$84.7K<0.01%+1213F-HRTimeline
Essential Partners LLC1,096$80K0.04%+1,08713F-HRTimeline
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…1,095$80K0.01%-20513F-HRTimelineGroup
Sterling Capital Management LLC991$72.3K<0.01%-13113F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…961$70.2K<0.01%+72713F-HRTimelineGroup
Nykredit A/Sin group Nykredit A/S948$69.2K<0.01%13F-HR/ATimelineGroup
Compagnie Lombard Odier SCmA860$62.8K<0.01%013F-HRTimeline
STRS OHIO695$50.7K<0.01%-10413F-HRTimeline
Parallel Advisors, LLC695$50.7K<0.01%-13513F-HRTimeline
NewEdge Advisors, LLC689$50.3K<0.01%013F-HRTimeline
Farther Finance Advisors, LLC604$44.2K<0.01%+31513F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC596$43.5K<0.01%+6013F-HR/ATimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP487$37.3K<0.01%+12613F-HRTimelineGroup
GAMMA Investing LLC494$36.1K<0.01%-3713F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …461$33.7K<0.01%-7413F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…395$28.9K<0.01%-46213F-HRTimelineGroup
Clearstead Advisors, LLC376$27.4K<0.01%+35813F-HRTimeline
NOMURA ASSET MANAGEMENT CO LTDgroup of 2 filers holding340$24.8K-14,198Timeline
UMB Bank, n.a.301$22K<0.01%-1113F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
NISA INVESTMENT ADVISORS, LLC284$20.7K<0.01%+9913F-HRTimeline
Versant Capital Management, Inc284$20.7K<0.01%+18313F-HRTimeline
Quent Capital, LLC253$18.5K<0.01%+1513F-HRTimeline
Deseret Mutual Benefit Administrators248$18.1K0.01%013F-HRTimeline
True Wealth Design, LLC232$16.9K<0.01%+20513F-HRTimeline
MassMutual Private Wealth & Trust, FSB221$16.1K<0.01%-5313F-HRTimeline
Smartleaf Asset Management LLC213$15.9K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.209$15.3K<0.01%+1913F-HRTimelineGroup
LANARK FINANCIAL, INC.194$14.2K<0.01%-613F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management172$12.6K<0.01%013F-HRTimelineGroup
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.166$12.1K<0.01%+113F-HRTimelineGroup
BESSEMER GROUP INCin group BESSEMER GROUP INC165$12K<0.01%+10513F-HRTimelineGroup
Activest Wealth Management140$10.2K<0.01%+13813F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK121$8.83K<0.01%+213F-HRTimelineGroup
Covestor Ltd112$8K<0.01%-42913F-HRTimeline
Eurizon Capital SGR S.p.A.89$6.66K<0.01%-7,42913F-HRTimeline
PRIVATE TRUST CO NA90$6.57K<0.01%013F-HRTimeline
Pinnacle Wealth Planning Services, Inc.80$5.84K<0.01%+2213F-HRTimeline
Private Wealth Management Group, LLC79$5.77K<0.01%+4313F-HRTimeline
SJS Investment Consulting Inc.75$5.47K<0.01%+5313F-HRTimeline
Parkside Financial Bank & Trust68$4.96K<0.01%013F-HRTimeline
BROWN BROTHERS HARRIMAN & COin group BROWN BROTHERS HARRIMAN & CO55$4.01K<0.01%013F-HRTimelineGroup
Sachetta, LLC55$4.01K<0.01%+113F-HRTimeline
Rakuten Securities, Inc.in group Rakuten Group, Inc.51$3.72K<0.01%-1313F-HRTimelineGroup
TRUST CO OF VERMONT50$3.65K<0.01%13F-HRTimeline
TD Waterhouse Canada Inc.49$3.57K<0.01%-1,32613F-HRTimeline
FIDUCIARY FINANCIAL ADVISORS45$3.14K<0.01%new13F-HRTimeline
Global Retirement Partners, LLC42$3.07K<0.01%13F-HRTimeline
Fortitude Family Office, LLC42$3.07K<0.01%-1013F-HRTimeline
Larson Financial Group LLC41$2.99K<0.01%-1613F-HRTimeline
CVA Family Office, LLC41$2.99K<0.01%-4313F-HRTimeline
Basecamp Wealth Advisors LLC40$2.92K<0.01%-513F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC39$2.85K<0.01%-513F-HRTimelineGroup
Transce3nd, LLC33$2.49K0.02%013F-HRTimeline
HARBOUR INVESTMENTS, INC.32$2.34K<0.01%013F-HRTimeline
Bruce G. Allen Investments, LLC31$2.26K<0.01%013F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…30$2.19K<0.01%013F-HRTimelineGroup
GoalVest Advisory LLC26$1.9K<0.01%new13F-HRTimeline
Creative Capital Management Investments…25$1.82K<0.01%new13F-HRTimeline
CoreCap Advisors, LLC24$1.75K<0.01%013F-HRTimeline
Peterson Wealth Services23$1.68K<0.01%013F-HRTimeline
Manchester Capital Management LLC21$1.53K<0.01%013F-HRTimeline
AdvisorNet Financial, Inc21$1.53K<0.01%+213F-HRTimeline
JFS WEALTH ADVISORS, LLC21$1.53K<0.01%-913F-HRTimeline
Purpose Unlimited Inc.in group Purpose Unlimited Inc.19$1.39K<0.01%-1513F-HRTimelineGroup
Wilkerson Advisory Group LLC14$1.02K<0.01%-213F-HRTimeline
OGOREK ANTHONY JOSEPH /NY/ /ADV18$1K<0.01%013F-HRTimeline
Avion Wealth14$1K<0.01%013F-HRTimeline
Torren Management, LLC13$984<0.01%013F-HRTimeline
Planning Strategies Inc.12$876<0.01%13F-HRTimeline
FIRST HORIZON CORP11$803<0.01%-1313F-HRTimeline
RAFFA WEALTH MANAGEMENT, LLC11$803<0.01%+113F-HRTimeline
Bay Harbor Wealth Management, LLC11$803<0.01%-113F-HRTimeline
DiNuzzo Private Wealth, Inc.10$730<0.01%+113F-HRTimeline
Owl Creek Wealth Partners LLC10$730<0.01%new13F-HRTimeline
CREATIVE FINANCIAL DESIGNS INC /ADV9$657<0.01%013F-HRTimeline
SouthState Bank Corpin group SouthState Bank Corp8$584<0.01%-1013F-HRTimelineGroup
Principia Wealth Advisory, LLC8$584<0.01%013F-HRTimeline
Rialto Wealth Management, LLC8$584<0.01%-413F-HRTimeline
Bell Investment Advisors, Inc7$511<0.01%new13F-HRTimeline
American Capital Advisory, LLC7$511<0.01%013F-HRTimeline
HFM Investment Advisors, LLC7$511<0.01%+113F-HRTimeline
FINANCIAL CONSULATE, INC6$438<0.01%new13F-HRTimeline
MV CAPITAL MANAGEMENT, INC.5$365<0.01%-113F-HR/ATimeline
SWAN Capital LLC5$365<0.01%013F-HRTimeline
Cromwell Holdings LLC4$292<0.01%013F-HRTimeline
Arlington Trust Co LLCin group Arlington Trust Co LLC4$292<0.01%013F-HRTimelineGroup
LRI Investments, LLC4$292<0.01%new13F-HRTimeline
Keating Financial Advisory Services, In…4$292<0.01%-2613F-HRTimeline
Dunhill Financial, LLC3$271<0.01%013F-HRTimeline
MARYLAND CAPITAL ADVISORS INC.3$219<0.01%13F-HRTimeline
Hughes Financial Services, LLC3$219<0.01%+113F-HRTimeline
Rossby Financial, LCC3$219<0.01%new13F-HRTimeline
DecisionPoint Financial, LLC2$146<0.01%new13F-HRTimeline
Valued Wealth Advisors LLC1$76<0.01%013F-HRTimeline
SBI Securities Co., Ltd.1$73<0.01%-113F-HRTimeline
Abound Wealth Management1$73<0.01%new13F-HRTimeline
3 FACTOR INDEXING, LLC1$73<0.01%013F-HRTimeline
Penserra Capital Management LLCin group Penserra Capital Management L…9$00%013F-HRTimelineGroupValue filed as zero, left out of ratios.
Navigoe, LLC5$00%new13F-HRTimelineValue filed as zero, left out of ratios.
Evolution Advisers, Inc.3$00%new13F-HRTimelineValue filed as zero, left out of ratios.