Westlake Corporation WLK

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63.49 USD -2.79 (-4.21%)

At closeNov 6, 2026, 4:00 PM EST

63.49 0.00 0.00%

After hours · Nov 6, 4:00 PM ET

63.22 Day range 66.18

56.38 52-week range 123.39

Held by insiders 74.46%

Held by institutions 32.15%

Float held by institutions 125.86%

Institutions 484

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	2.58%	3,294,162	209.18M	Jun 29, 2026
Capital World Investors	2.22%	2,842,348	180.49M	Jun 29, 2026
Dimensional Fund Advisors LP	2.07%	2,652,299	168.42M	Sep 29, 2026
Price (T.Rowe) Associates Inc	1.73%	2,206,676	140.12M	Jun 29, 2026
Orbis Allan Gray Ltd	1.63%	2,084,364	132.36M	Jun 29, 2026
Vanguard Portfolio Management LLC	1.37%	1,752,627	111.29M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
iShares Trust-iShares Core S&P Mid-Cap ETF	0.92%	1,182,325	75.08M	Sep 29, 2026
T. Rowe Price Mid-Cap Value Fund, Inc.	0.89%	1,139,623	72.37M	Jun 29, 2026
GLOBAL X FUNDS-Global X US Infrastructure Development ETF	0.82%	1,054,833	66.98M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	0.80%	1,018,691	64.69M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund	0.57%	732,914	46.54M	Jun 29, 2026
TR PRICE-Price (T.Rowe) Mid-Cap Value Equity Trust	0.55%	705,826	44.82M	Jun 29, 2026

WLK insiders
Insider	Relation	Latest transaction	Date	Shares held
BENDER MARK STEVEN	Chief Financial Officer	Conversion of Exercise of derivative security	May 11, 2026	35,895
BUESINGER ROBERT F	Officer	Sale	Mar 26, 2026	34,482
CHAO ALBERT Y	Officer and Director	Sale	Aug 10, 2026	642,880
CHAO CATHERINE T	Director	Conversion of Exercise of derivative security	Aug 6, 2026	27,171
CHAO DAVID TSUNG-HUNG	Director	Conversion of Exercise of derivative security	Aug 6, 2026	30,503
CHAO JAMES Y	Chairman of the Board	Stock Award(Grant)	Feb 18, 2026	49,774

Held by funds