Westlake Corp (WLK) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

128,251,427Shares Outstanding

45,246,056Shares held by institutions

$5,217,322,717Value of institutional holdings

35.28%Institutional ownership %

22.32%Shares Changed QoQ

292No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Westlake Corp (NYSE:WLK) has 292 institutional investors that have filed 13F reports for the period ending December 2025.

Their combined ownership stood at 34.7% of outstanding shares in December 2025, up from 32.8% in September 2025.
Their total shares held in WLK increased 20.92% quarter over quarter, and separately, investors owning Westlake decreased 22.13% from a year ago.
During the quarter, 155 of these 292 funds increased positions in WLK, 108 reduced exposure, and 29 held steady.
The aggregate institutional position in Westlake amounted to 44.49Mn shares as of December 2025, up by 7.7Mn shares quarter on quarter, and up 8.36Mn shares year over year.
DEPRINCE RACE & ZOLLO INC is the top holder of Westlake as of December 31, 2025, with 203.37K shares representing 0.16% of outstanding stock.
The biggest buyers of Westlake for the quarter ending December 2025 included BI Asset Management Fondsmaeglerselskab A/S (35.01K), GATEWAY INVESTMENT ADVISERS LLC (7.15K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (2.59K), MFA WEALTH ADVISORS, LLC (2.38K), OPPENHEIMER & CO INC (1.74K).
The biggest sellers of Westlake for the quarter ending December 2025 included SG Americas Securities, LLC (12.44K), Inspire Investing, LLC (1.57K), DEPRINCE RACE & ZOLLO INC (860), Sterling Capital Management LLC (855), YOUSIF CAPITAL MANAGEMENT, LLC (537).
Per Business Quant data, the top 10 holders of Westlake for the quarter ending December 2025 are DEPRINCE RACE & ZOLLO INC (203.37K), BI Asset Management Fondsmaeglerselskab A/S (42.04K), Retirement Systems of Alabama (40.89K), SG Americas Securities, LLC (24.58K), YOUSIF CAPITAL MANAGEMENT, LLC (10.52K), Louisiana State Employees Retirement System (9.7K), GATEWAY INVESTMENT ADVISERS LLC (7.15K), Pictet Asset Management Holding SA (6.06K), State of Alaska, Department of Revenue (3.35K), Inspire Investing, LLC (2.84K).

292 Institutional Holders

45,246,056 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Orbis Allan Gray Ltd	31 Dec, 2025	4,386,635	472,224	12.06%	$324,347,792.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	4,220,717	4,163,207	7,239.10%	$312,079,814.00
VANGUARD GROUP INC	31 Dec, 2025	3,917,329	477,698	13.89%	$289,647,306.00
BlackRock, Inc.	31 Dec, 2025	3,261,433	75,697	2.38%	$241,150,363.00
Capital World Investors	31 Dec, 2025	2,171,324	2,171,324	0.00%	$160,547,697.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	1,885,678	585,438	45.03%	$139,431,144.00
BRANDES INVESTMENT PARTNERS, LP	31 Dec, 2025	1,670,327	121,633	7.85%	$123,504,691.00
Goldman Sachs Group Inc	31 Dec, 2025	1,507,906	456,509	43.42%	$111,494,560.00
State Street Corp	31 Dec, 2025	1,396,633	101,391	7.83%	$103,267,044.00
Holocene Advisors, LP	31 Dec, 2025	1,220,622	366,438	42.90%	$90,252,791.00
VICTORY CAPITAL MANAGEMENT INC	31 Dec, 2025	1,113,819	-1,752,541	-61.14%	$82,355,777.00
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	31 Dec, 2025	924,704	7,431	0.81%	$68,372,614.00
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	31 Dec, 2025	876,885	20,909	2.44%	$64,837,978.00
Morgan Stanley	31 Dec, 2025	759,623	-56,006	-6.87%	$56,166,568.00
JACOBS LEVY EQUITY MANAGEMENT, INC	31 Dec, 2025	668,405	-192,318	-22.34%	$49,421,866.00
Nuveen, LLC	31 Dec, 2025	652,909	-33,630	-4.90%	$48,276,092.00
UBS Group AG	31 Dec, 2025	648,012	87,532	15.62%	$47,914,008.00
Woodline Partners LP	31 Dec, 2025	628,159	434,373	224.15%	$46,446,076.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	594,922	-58,164	-8.91%	$43,997,447.00
THOMPSON SIEGEL & WALMSLEY LLC	31 Dec, 2025	536,290	94,950	21.51%	$39,653.00

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