Westlake Corp (WLK) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

128,975,741Shares Outstanding

0Shares held by institutions

$0Value of institutional holdings

0.03%Institutional ownership %

437.74%Shares Changed QoQ

8No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 8 institutional investors hold a position in Westlake Corp (NYSE:WLK).

Westlake saw its institutional ownership percentage fell to 0.0% in December 2025 from 32.2% in September 2025.
Quarterly data indicates a 437.74% shift in institutional share volume, and the annual owner count reflects a decrease of 97.87%.
Among the 8 institutional holders of Westlake, 7 added to their stakes while 1 trimmed their positions and 0 held steady.
Collectively, institutional investors increased their stake in Westlake to 41.60K shares as of December 2025, a change that is up by 33.87K shares quarter on quarter and down 35.21Mn shares year over year.
As of December 31, 2025, SG Americas Securities, LLC held Westlake's largest shareholding position with over 37.01K shares, representing 0.03% of total outstanding shares.
Among the most significant buyers of Westlake during December 2025 were SG Americas Securities, LLC (30.07K), Assenagon Asset Management S.A. (3.79K), MassMutual Private Wealth & Trust, FSB (43), Global Wealth Strategies & Associates (23), GAMMA Investing LLC (23).
Leading sellers of Westlake stock in December 2025 included Versant Capital Management, Inc (104).
The top 8 institutional holders of Westlake for the quarter ending December 2025 included SG Americas Securities, LLC (37.01K), Assenagon Asset Management S.A. (3.79K), GAMMA Investing LLC (464), MassMutual Private Wealth & Trust, FSB (274), Global Wealth Strategies & Associates (23), True Wealth Design, LLC (18), Versant Capital Management, Inc (18), Rialto Wealth Management, LLC (7).

299 Institutional Holders

0 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Orbis Allan Gray Ltd	30 Sep, 2025	3,914,411	3,914,411	0.00%	$301,644,512.00
VANGUARD GROUP INC	30 Sep, 2025	3,439,631	-83,179	-2.36%	$265,057,965.00
BlackRock, Inc.	30 Sep, 2025	3,185,736	-142,960	-4.29%	$245,492,785.00
VICTORY CAPITAL MANAGEMENT INC	30 Sep, 2025	2,866,360	-855,382	-22.98%	$220,881,701.00
PRICE T ROWE ASSOCIATES INC /MD/	30 Sep, 2025	2,208,143	149,555	7.26%	$170,161.00
BRANDES INVESTMENT PARTNERS, LP	30 Sep, 2025	1,548,694	91,823	6.30%	$119,343,194.00
DIMENSIONAL FUND ADVISORS LP	30 Sep, 2025	1,300,240	25,071	1.97%	$100,195,151.00
STATE STREET CORP	30 Sep, 2025	1,295,242	-96,985	-6.97%	$99,811,349.00
CITADEL ADVISORS LLC	30 Sep, 2025	1,200,851	1,200,851	0.00%	$92,537,578.00
GOLDMAN SACHS GROUP INC	30 Sep, 2025	1,051,397	-7,546	-0.71%	$81,020,629.00
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	30 Sep, 2025	917,273	265,447	40.72%	$70,685,057.00
JACOBS LEVY EQUITY MANAGEMENT, INC	30 Sep, 2025	860,723	-124,535	-12.64%	$66,327,314.00
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	30 Sep, 2025	855,976	11,846	1.40%	$65,961,436.00
Holocene Advisors, LP	30 Sep, 2025	854,184	696,029	440.09%	$65,823,419.00
MORGAN STANLEY	30 Sep, 2025	815,629	353,141	76.36%	$62,852,508.00
Nuveen, LLC	30 Sep, 2025	686,539	-199,589	-22.52%	$52,904,695.00
GEODE CAPITAL MANAGEMENT, LLC	30 Sep, 2025	653,086	78,855	13.73%	$50,339,001.00
UBS Group AG	30 Sep, 2025	560,480	117,013	26.39%	$43,190,589.00
ANTIPODES PARTNERS Ltd	30 Sep, 2025	555,904	-267,265	-32.47%	$42,841,194.00
Allspring Global Investments Holdings, LLC	30 Sep, 2025	546,151	25,414	4.88%	$41,922,550.00

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Westlake Corp (WLK) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

299 Institutional Holders

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