Westlake Corporation WLK

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67.90 USD -0.57 (-0.83%)

At closeNov 4, 2026, 4:08 PM EST

67.90 0.00 0.00%

After hours · Nov 4, 4:08 PM ET

67.14 Day range 71.69

56.33 52-week range 124.23

Held by insiders 74.51%

Held by institutions 31.72%

Float held by institutions 124.43%

Institutions 480

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	2.58%	3,294,162	223.57M	Jun 29, 2026
Capital World Investors	2.22%	2,842,348	192.91M	Jun 29, 2026
Price (T.Rowe) Associates Inc	1.73%	2,206,676	149.77M	Jun 29, 2026
Orbis Allan Gray Ltd	1.63%	2,084,364	141.47M	Jun 29, 2026
Dimensional Fund Advisors LP	1.61%	2,051,554	139.24M	Jun 29, 2026
Vanguard Portfolio Management LLC	1.37%	1,752,627	118.95M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
iShares Trust-iShares Core S&P Mid-Cap ETF	0.93%	1,182,325	80.24M	Sep 29, 2026
T. Rowe Price Mid-Cap Value Fund, Inc.	0.89%	1,139,623	77.35M	Jun 29, 2026
GLOBAL X FUNDS-Global X US Infrastructure Development ETF	0.83%	1,054,833	71.59M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	0.80%	1,018,691	69.14M	Jun 29, 2026
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund	0.57%	732,914	49.74M	Jun 29, 2026
TR PRICE-Price (T.Rowe) Mid-Cap Value Equity Trust	0.55%	705,826	47.90M	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