NYSE · WLK

Westlake Corporation

Basic Materials · Chemicals - Specialty

$67.90

Down-$1.44 (-2.12%)

Updated Nov 5, 2026, 5:20 PM

SID Score

5.1/10

Composite research score

Smart Money

58/100

Neutral

Market cap: 9.59B
P/E ratio: -10.02
Dividend yield: 3.11%
52-week range: $56.33 – $124.23
Volume: 1.96M
Avg. volume: 1.61M

Price performance · WLK

WLK price history

1M range · 21 trading sessions · Daily adjusted prices

Prices through Nov 4, 2026

Last close: $67.90
Period change: +10.37%
Period low: $60.84
Period high: $71.17

Daily close

View OHLC price history

WLK OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
Nov 4, 2026	$69.92	$71.75	$67.13	$67.90	1.96M
Nov 3, 2026	$71.21	$71.21	$68.30	$68.47	1.27M
Nov 2, 2026	$67.82	$71.17	$67.66	$71.17	1.26M
Oct 30, 2026	$66.08	$68.35	$66.08	$68.28	1.18M
Oct 29, 2026	$66.16	$67.79	$65.01	$66.01	915.93K
Oct 28, 2026	$66.02	$66.625	$65.1043	$65.83	693.9K
Oct 27, 2026	$65.06	$66.555	$65.06	$66.17	954.16K
Oct 26, 2026	$64.56	$66.91	$64.56	$65.31	960.89K
Oct 23, 2026	$64.12	$65.29	$63.50	$64.56	1.03M
Oct 22, 2026	$61.20	$64.40	$60.7053	$64.14	1.28M
Oct 21, 2026	$62.85	$63.25	$60.36	$60.84	1.13M
Oct 20, 2026	$62.63	$62.98	$61.72	$62.69	599.97K
Oct 19, 2026	$63.16	$63.32	$61.97	$62.29	501.85K
Oct 16, 2026	$63.65	$64.39	$62.075	$63.33	775.53K
Oct 15, 2026	$62.67	$64.10	$61.70	$63.61	701.32K
Oct 14, 2026	$61.50	$62.36	$61.00	$62.21	831.26K
Oct 13, 2026	$62.105	$63.33	$61.72	$61.86	740.7K
Oct 12, 2026	$61.86	$62.315	$60.99	$61.85	987.64K
Oct 9, 2026	$62.39	$62.79	$61.68	$62.29	766.08K
Oct 8, 2026	$61.50	$62.3525	$60.775	$62.31	1.17M
Oct 7, 2026	$62.83	$63.175	$59.84	$61.52	1.15M

Latest WLK news

The latest Smart Investors Daily articles mentioning WLK.

earningsNov 4, 2026

Westlake (WLK) Misses Q3 Earnings Expectations

sec filingNov 4, 2026

WESTLAKE CORP (WLK) Reports Material Event to SEC

priceOct 22, 2026

Westlake Corporation (WLK) Surges 5.1% on Heavy Volume

Latest WLK news

The latest Smart Investors Daily articles mentioning WLK.

WLK research

SEC Filings

Recent regulatory filings and source documents.

SEC filing history

Open a filing to view the original source document.

WLK SEC filings
Filed	Form	Description	Accepted	Document
Nov 4, 2026	8-K	Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01	—	Open source
Nov 4, 2026	10-Q	Form 10-Q - Quarterly report [Sections 13 or 15(d)]	—	Open source
Sep 29, 2026	8-K	Form 8-K - Current report - Item 2.05 Item 7.01	—	Open source
Sep 1, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 31, 2026	8-K	Form 8-K - Current report - Item 5.02	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 17, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 11, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 10, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 5, 2026	10-Q	Form 10-Q - Quarterly report [Sections 13 or 15(d)]	—	Open source
Aug 4, 2026	8-K	Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01	—	Open source
Jul 29, 2026	8-K	Form 8-K - Current report - Item 8.01	—	Open source
May 6, 2026	10-Q	Form 10-Q - Quarterly report [Sections 13 or 15(d)]	—	Open source
May 5, 2026	8-K	Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01	—	Open source
May 1, 2026	8-K	Form 8-K - Current report - Item 7.01	—	Open source
Apr 20, 2026	8-K	Form 8-K - Current report - Item 5.02 Item 7.01 Item 9.01	—	Open source
Apr 14, 2026	8-K	Form 8-K - Current report - Item 8.01	—	Open source
Apr 6, 2026	8-K	Form 8-K - Current report - Item 1.01 Item 1.02 Item 2.03 Item 9.01	—	Open source
Apr 6, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Apr 2, 2026	8-K	Form 8-K - Current report - Item 5.02	—	Open source
Apr 2, 2026	DEF 14A	Form DEF 14A - Other definitive proxy statements	—	Open source
Mar 31, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Mar 2, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Feb 23, 2026	8-K	Form 8-K - Current report - Item 5.02 Item 7.01 Item 9.01	—	Open source
Jan 6, 2026	8-K	Form 8-K - Current report - Item 7.01 Item 9.01	—	Open source
Dec 10, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Nov 12, 2025	8-K	Form 8-K - Current report - Item 7.01 Item 9.01	—	Open source
Nov 5, 2025	8-K	Form 8-K - Current report - Item 1.01 Item 7.01 Item 9.01	—	Open source
Nov 4, 2025	8-K	Form 8-K - Current report - Item 7.01 Item 9.01	—	Open source
Oct 31, 2025	S-3ASR	Form S-3ASR - Automatic shelf registration statement of securities of well-known seasoned issuers	—	Open source
Oct 31, 2025	10-Q	Form 10-Q - Quarterly report [Sections 13 or 15(d)]	—	Open source
Oct 30, 2025	8-K	Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01	—	Open source
Oct 3, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Aug 29, 2025	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source

Filed

Form

Description

Accepted

Document

Nov 4, 2026

8-K

Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01

—

Open source

Nov 4, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

—

Open source

Sep 29, 2026

8-K

Form 8-K - Current report - Item 2.05 Item 7.01

—

Open source

Sep 1, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 31, 2026

8-K

Form 8-K - Current report - Item 5.02

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 17, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 11, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 10, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 5, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

—

Open source

Aug 4, 2026

8-K

Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01

—

Open source

Jul 29, 2026

8-K

Form 8-K - Current report - Item 8.01

—

Open source

May 6, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

—

Open source

May 5, 2026

8-K

Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01

—

Open source

May 1, 2026

8-K

Form 8-K - Current report - Item 7.01

—

Open source

Apr 20, 2026

8-K

Form 8-K - Current report - Item 5.02 Item 7.01 Item 9.01

—

Open source

Apr 14, 2026

8-K

Form 8-K - Current report - Item 8.01

—

Open source

Apr 6, 2026

8-K

Form 8-K - Current report - Item 1.01 Item 1.02 Item 2.03 Item 9.01

—

Open source

Apr 6, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Apr 2, 2026

8-K

Form 8-K - Current report - Item 5.02

—

Open source

Apr 2, 2026

DEF 14A

Form DEF 14A - Other definitive proxy statements

—

Open source

Mar 31, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Mar 2, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Feb 23, 2026

8-K

Form 8-K - Current report - Item 5.02 Item 7.01 Item 9.01

—

Open source

Jan 6, 2026

8-K

Form 8-K - Current report - Item 7.01 Item 9.01

—

Open source

Dec 10, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Nov 12, 2025

8-K

Form 8-K - Current report - Item 7.01 Item 9.01

—

Open source

Nov 5, 2025

8-K

Form 8-K - Current report - Item 1.01 Item 7.01 Item 9.01

—

Open source

Nov 4, 2025

8-K

Form 8-K - Current report - Item 7.01 Item 9.01

—

Open source

Oct 31, 2025

S-3ASR

Form S-3ASR - Automatic shelf registration statement of securities of well-known seasoned issuers

—

Open source

Oct 31, 2025

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

—

Open source

Oct 30, 2025

8-K

Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01

—

Open source

Oct 3, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Aug 29, 2025

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Westlake (WLK) Misses Q3 Earnings Expectations

WESTLAKE CORP (WLK) Reports Material Event to SEC

Westlake Corporation (WLK) Surges 5.1% on Heavy Volume

Featured By

Westlake (WLK) Misses Q3 Earnings Expectations

WESTLAKE CORP (WLK) Reports Material Event to SEC

Westlake Corporation (WLK) Surges 5.1% on Heavy Volume