Equibles

WLK

Westlake Corp

Company with tickers: WLK

CIK
1262823
CUSIP
960413102
Shares Outstanding
128,122,944
Price History Institutional Holders Short Volume Short Interest Fails to Deliver Financials SEC Filings Earnings Calls Insider Trades Congressional Trades
Holders: 327
Total Value: $4,677,276,683
Total Shares: 40,038,323
Showing 1–100 of 341 holdings by value · page 1 of 4

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 327 13F filers · Δ vs Dec 31, 2025
Top Holder
13.2%
+3.8 pts
Top 5
42.0%
+4.2 pts
Top 10
60.4%
+4.7 pts
HHI
510
Broadly held +100

Quarterly Activity

vs Dec 31, 2025
New
322
Increased
2
Decreased
2
Sold Out
295
Unchanged
1
Holder count: +27
Institutional value: +35.2%
Shares held: -14.4%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds
Mega GOLDMAN SACHS GROUP INC +639,374 1,393,327
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. +197 535

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds
Large Corient Private Wealth LLC −15,744 34,971
Large Rockefeller Capital Management L.P. −98 857

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD)
Large Orbis Allan Gray Ltd 5,293,519 $618,388,888
Mega Capital World Investors 4,211,006 $491,929,720
Mega BlackRock, Inc. 3,079,087 $359,698,937
Mega PRICE T ROWE ASSOCIATES INC /MD/ 2,407,457 $281,239,126
Large BRANDES INVESTMENT PARTNERS, LP 1,842,650 $215,258,371

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD)
Large Orbis Allan Gray Ltd 4,386,635 $324,347,791
Mega WELLINGTON MANAGEMENT GROUP LLP 4,220,717 $312,079,813
Mega VANGUARD GROUP INC 3,654,559 $270,218,092
Mega BlackRock, Inc. 3,261,433 $241,150,349
Mega PRICE T ROWE ASSOCIATES INC /MD/ 2,208,715 $163,312,386
100 of 100 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Action
Large Orbis Allan Gray Ltd $618,388,888 13.22% 5,293,519 View
Mega Capital World Investors $491,929,720 10.52% 4,211,006 View
Mega BlackRock, Inc. $359,698,937 7.69% 3,079,087 View
Mega PRICE T ROWE ASSOCIATES INC /MD/ $281,239,126 6.01% 2,407,457 View
Large BRANDES INVESTMENT PARTNERS, LP $215,258,371 4.60% 1,842,650 View
Mega WELLINGTON MANAGEMENT GROUP LLP $209,518,654 4.48% 1,793,517 View
Mega DIMENSIONAL FUND ADVISORS LP $171,260,455 3.66% 1,466,020 View
Mega GOLDMAN SACHS GROUP INC $162,768,458 3.48% 1,393,327 View
Mega STATE STREET CORP $161,269,192 3.45% 1,380,493 View
Mega FMR LLC $153,323,094 3.28% 1,312,473 View
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $114,647,728 2.45% 981,405 View
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. $110,275,159 2.36% 943,975 View
Mega UBS Group AG $94,772,092 2.03% 811,266 View
Large Holocene Advisors, LP $85,282,688 1.82% 730,035 View
Mega CITADEL ADVISORS LLC $83,594,756 1.79% 715,586 View
Mega GEODE CAPITAL MANAGEMENT, LLC $71,766,497 1.53% 614,334 View
Mega Nuveen, LLC $65,973,393 1.41% 564,744 View
Large Erste Asset Management GmbH $46,143,900 0.99% 395,000 View
Mega SCHRODER INVESTMENT MANAGEMENT GROUP $43,750,024 0.94% 374,508 View
Large Balyasny Asset Management L.P. $43,185,083 0.92% 369,672 View
Large JACOBS LEVY EQUITY MANAGEMENT, INC $40,774,268 0.87% 349,035 View
Large Woodline Partners LP $39,377,101 0.84% 337,075 View
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $36,420,036 0.78% 311,762 View
Large NEW YORK STATE COMMON RETIREMENT FUND $36,170,509 0.77% 309,626 View
Large ProShare Advisors LLC $34,556,641 0.74% 295,811 View
Large Allspring Global Investments Holdings, LLC $33,344,399 0.71% 285,434 View
Mega JANUS HENDERSON GROUP PLC $31,516,049 0.67% 269,783 View
Large FEDERATED HERMES, INC. $31,150,169 0.67% 266,651 View
Mega AQR CAPITAL MANAGEMENT LLC $30,381,374 0.65% 260,070 View
Large VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. $28,540,060 0.61% 244,308 View
Mega BANK OF AMERICA CORP /DE/ $27,684,703 0.59% 236,986 View
Mega D. E. Shaw & Co., Inc. $27,240,437 0.58% 233,183 View
Mid Merewether Investment Management, LP $25,688,718 0.55% 219,900 View
Mid DEPRINCE RACE & ZOLLO INC $23,757,216 0.51% 203,366 View
Mega Bank of New York Mellon Corp $21,152,591 0.45% 181,070 View
Mega Invesco Ltd. $20,957,738 0.45% 179,402 View
Mid Ceredex Value Advisors LLC $20,782,278 0.44% 177,900 View
Large Man Group plc $18,724,610 0.40% 160,286 View
Small ROBOTTI ROBERT $16,939,366 0.36% 145,004 View
Large CAPSTONE INVESTMENT ADVISORS, LLC $15,865,090 0.34% 135,808 View
Mid SPROTT INC. $15,491,500 0.33% 132,610 View
Large Quantinno Capital Management LP $14,187,088 0.30% 121,444 View
Mid Recurrent Investment Advisors LLC $13,176,127 0.28% 112,790 View
Mid Yaupon Capital Management LP $12,504,880 0.27% 107,044 View
Mega WELLS FARGO & COMPANY/MN $12,465,277 0.27% 106,705 View
Mega JANE STREET GROUP, LLC $12,346,238 0.26% 105,686 View
Mega ROYAL BANK OF CANADA $12,143,553 0.26% 103,951 View
Mega FIRST TRUST ADVISORS LP $11,950,569 0.26% 102,299 View
Mega JPMORGAN CHASE & CO $11,417,865 0.24% 97,739 View
Large Russell Investments Group, Ltd. $10,439,265 0.22% 89,362 View
Mega RHUMBLINE ADVISERS $10,198,853 0.22% 87,304 View
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $10,163,340 0.22% 87,000 View
Mega MILLENNIUM MANAGEMENT LLC $9,929,349 0.21% 84,997 View
Mid Meiji Yasuda Asset Management Co Ltd. $9,284,619 0.20% 79,478 View
Mega Swiss National Bank $8,866,638 0.19% 75,900 View
Mid PDT Partners, LLC $8,852,269 0.19% 75,777 View
Mega PRINCIPAL FINANCIAL GROUP INC $8,700,870 0.19% 74,481 View
Small Thomist Capital Management, LP $8,527,860 0.18% 73,000 View
Large Cerity Partners LLC $8,490,360 0.18% 72,679 View
Small AGMAN CAPITAL LLC $8,444,100 0.18% 72,283 View
Large MACKENZIE FINANCIAL CORP $8,407,301 0.18% 71,968 View
Mega CITADEL ADVISORS LLC $8,072,262 0.17% 69,100 View
Mega ALLIANCEBERNSTEIN L.P. $7,863,738 0.17% 67,315 View
Mid CAPITAL INTERNATIONAL SARL $7,433,723 0.16% 63,634 View
Mega CITADEL ADVISORS LLC $7,301,250 0.16% 62,500 View
Small Lloyd Harbor Capital Management, LLC $7,242,840 0.15% 62,000 View
Large Rokos Capital Management LLP $7,102,656 0.15% 60,800 View
Large Walleye Capital LLC $6,987,471 0.15% 59,814 View
Mega CITIGROUP INC $6,373,582 0.14% 54,559 View
Mega Legal & General Group Plc $5,927,096 0.13% 50,737 View
Small Albar Capital Partners LLP $5,702,451 0.12% 48,814 View
Large Tidal Investments LLC $5,586,332 0.12% 47,820 View
Mega VICTORY CAPITAL MANAGEMENT INC $5,324,421 0.11% 45,578 View
Small Trek Financial, LLC $5,291,478 0.11% 45,296 View
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM $5,193,700 0.11% 44,459 View
Mid OCCUDO QUANTITATIVE STRATEGIES LP $5,190,312 0.11% 44,430 View
Mid Engineers Gate Manager LP $4,964,733 0.11% 42,499 View
Mid BI Asset Management Fondsmaeglerselskab A/S $4,911,463 0.11% 42,043 View
Large Retirement Systems of Alabama $4,776,302 0.10% 40,886 View
Mega BANK OF MONTREAL /CAN/ $4,560,416 0.10% 39,038 View
Large Squarepoint Ops LLC $4,501,308 0.10% 38,532 View
Mid CAPITAL INTERNATIONAL LTD /CA/ $4,357,386 0.09% 37,300 View
Mid Twin Tree Management, LP $4,202,833 0.09% 35,977 View
Large Corient Private Wealth LLC $4,085,312 0.09% 34,971 View
Large Gotham Asset Management, LLC $4,037,766 0.09% 34,564 View
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE $3,889,521 0.08% 33,295 View
Large Boston Partners $3,702,726 0.08% 31,696 View
Small Occam Crest Management LP $3,417,685 0.07% 29,256 View
Mega AMERIPRISE FINANCIAL INC $3,327,850 0.07% 28,487 View
Mega ENVESTNET ASSET MANAGEMENT INC $3,276,333 0.07% 28,046 View
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $3,037,320 0.06% 26,000 View
Large STATE OF WISCONSIN INVESTMENT BOARD $2,949,938 0.06% 25,252 View
Mega California Public Employees Retirement System $2,920,500 0.06% 25,000 View
Large STIFEL FINANCIAL CORP $2,894,332 0.06% 24,776 View
Large SG Americas Securities, LLC $2,870,968 0.06% 24,576 View
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM $2,817,114 0.06% 24,115 View
Mid Quantbot Technologies LP $2,796,203 0.06% 23,936 View
Large State of New Jersey Common Pension Fund D $2,763,727 0.06% 23,658 View
Mid AMG National Trust Bank $2,691,649 0.06% 23,041 View
Large Capital International, Inc./CA/ $2,495,158 0.05% 21,359 View
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