WLKP | WESTLAKE CHEMICAL | Historical Data

S&P 500$7,656.98
+0.86%
2m
DOW 30$52,573.29
+0.98%
2m
NASDAQ 100$29,368.44
+0.91%
2m
Russell 2000$288.89
+0.41%
2m
Russell 1000$417.91
+0.87%
2m
S&P 400$3,714.14
+0.83%
2m
S&P 600$1,726.18
+0.55%
2m

WESTLAKE CHEMICAL (WLKP)

NYSE

$21.54+$0.02 (+0.09%)

Price as of Sep 11, 2026 7:30 PM EDT

$758.5M
Market Cap
8.70%
1-Year Change
Chemicals
Industry

1 Month
+1.95%

Low Price$21.47

High Price$22.11
3 Months
-5.58%

Low Price$20.82

High Price$22.82
1 Year
+8.70%

Low Price$16.76

High Price$22.75

From

Show

Frequency

Date	Open	High	Low	Close	Change (%)	Volume
09/11/2026	21.61	21.72	21.42	21.52	+0.23%	10,665
09/10/2026	21.75	21.85	21.44	21.47	-0.92%	33,112
09/09/2026	21.84	21.84	21.52	21.67	-0.32%	5,193
09/08/2026	21.80	21.90	21.68	21.74	-0.64%	20,931
09/04/2026	21.83	22.08	21.70	21.88	-0.23%	12,318
09/03/2026	21.85	22.20	21.80	21.93	-0.81%	48,343
09/02/2026	21.74	22.30	21.74	22.11	+1.75%	26,201
09/01/2026	21.48	21.87	21.48	21.73	+0.42%	11,594
08/31/2026	21.64	21.78	21.50	21.64	+0.05%	21,384
08/28/2026	21.95	21.99	21.52	21.63	-0.46%	29,407
08/27/2026	21.78	21.99	21.60	21.73	+0.18%	30,549
08/26/2026	21.74	21.86	21.48	21.69	+0.32%	29,023
08/25/2026	21.65	21.74	21.51	21.62	+0.65%	15,933
08/24/2026	21.57	21.74	21.39	21.48	-0.37%	9,324
08/21/2026	21.52	21.70	21.26	21.56	+0.14%	28,059
08/20/2026	21.56	21.75	21.40	21.53	-0.87%	20,562
08/19/2026	21.96	21.96	21.60	21.72	+0.09%	54,085
08/18/2026	21.52	21.79	21.52	21.70	+0.18%	23,967
08/17/2026	21.71	21.88	21.42	21.66	-0.18%	27,788
08/14/2026	21.54	21.75	21.54	21.70	+0.14%	24,379
08/13/2026	21.62	21.80	21.33	21.67	+0.38%	27,015
08/13/2026	$0.47 Dividend
08/12/2026	21.09	21.63	21.06	21.59	+2.27%	69,890
08/11/2026	21.22	21.37	21.03	21.11	-0.51%	22,385
08/10/2026	21.32	21.41	21.10	21.22	+0.09%	30,420
08/07/2026	20.91	21.30	20.89	21.20	+1.45%	32,501
08/06/2026	20.80	21.48	20.80	20.89	+0.38%	73,082
08/05/2026	20.90	21.02	20.77	20.82	-0.14%	47,513
08/04/2026	20.97	21.13	20.53	20.84	+0.14%	87,564
08/04/2026	$0.40 Earnings
08/03/2026	21.36	21.40	20.82	20.82	-1.71%	81,950
07/31/2026	21.44	21.44	20.82	21.18	-0.41%	50,581
07/30/2026	21.33	21.60	21.11	21.27	-0.78%	33,456
07/29/2026	21.58	21.73	21.34	21.43	-0.59%	14,993
07/28/2026	21.53	21.73	21.29	21.56	+0.82%	26,956
07/27/2026	21.69	21.76	21.26	21.38	-0.91%	47,827
07/24/2026	21.41	21.89	21.41	21.58	+0.18%	5,977
07/23/2026	21.40	21.77	21.40	21.54	-0.14%	27,287
07/22/2026	21.45	21.78	21.45	21.57	+0.05%	22,531
07/21/2026	21.44	21.70	21.32	21.56	+0.14%	24,107
07/20/2026	21.54	21.73	21.37	21.53	-0.05%	35,884
07/17/2026	21.42	21.73	21.40	21.54	+1.01%	35,097
07/16/2026	21.30	21.77	21.24	21.32	-0.50%	107,693
07/15/2026	21.76	21.76	21.30	21.43	-0.64%	26,872
07/14/2026	21.58	21.83	21.29	21.57	-0.23%	13,430
07/13/2026	21.34	21.96	21.34	21.62	+0.59%	21,486
07/10/2026	21.74	22.04	21.39	21.49	-0.86%	25,465
07/09/2026	21.81	22.06	21.24	21.68	-0.63%	47,001
07/08/2026	21.90	21.90	21.75	21.81	0.00%	12,581
07/07/2026	21.64	21.84	21.62	21.81	+0.86%	12,074
07/06/2026	21.72	21.97	21.55	21.63	-1.16%	60,373
07/02/2026	22.01	22.04	21.78	21.88	+0.31%	10,528
07/01/2026	21.89	22.40	21.79	21.81	+0.13%	18,425
06/30/2026	22.04	22.47	21.78	21.78	-1.20%	24,078
06/29/2026	22.03	22.35	21.92	22.05	-0.57%	28,754
06/26/2026	21.93	22.44	21.93	22.18	+0.58%	10,468
06/25/2026	22.33	22.34	22.05	22.05	-0.53%	11,299
06/24/2026	22.15	22.40	22.15	22.17	-0.18%	10,008
06/23/2026	22.14	22.51	22.08	22.21	+0.53%	20,876
06/22/2026	21.78	22.28	21.78	22.09	-0.13%	39,770
06/18/2026	22.21	22.26	22.10	22.12	-0.75%	31,209
06/17/2026	22.93	22.93	22.15	22.28	-2.36%	31,377
06/16/2026	22.75	22.89	22.75	22.82	+0.30%	15,695
06/15/2026	22.78	22.95	22.50	22.75	-0.34%	17,415
06/12/2026	22.79	22.91	22.75	22.83	+0.17%	27,429
06/11/2026	22.78	22.93	22.77	22.79	+0.04%	18,141
06/10/2026	22.71	22.88	22.71	22.78	+0.30%	14,154
06/09/2026	22.86	22.90	22.53	22.71	-0.47%	16,649
06/08/2026	22.65	23.05	22.45	22.82	+0.78%	27,575
06/05/2026	22.52	22.80	22.41	22.65	+0.56%	20,972
06/04/2026	22.63	22.66	22.39	22.52	-0.60%	28,474
06/03/2026	22.72	22.78	22.46	22.66	-0.52%	34,269
06/02/2026	22.63	22.99	22.62	22.77	+0.39%	15,448
06/01/2026	22.58	22.99	22.57	22.68	+1.09%	47,755
05/29/2026	22.30	22.74	22.29	22.44	+0.70%	44,225
05/28/2026	22.26	22.36	22.14	22.28	+0.09%	22,455
05/27/2026	22.19	22.38	22.19	22.26	+0.18%	17,669
05/26/2026	21.98	22.38	21.85	22.22	+0.93%	46,855
05/22/2026	22.21	22.31	21.94	22.02	-0.27%	18,408
05/21/2026	21.94	22.22	21.79	22.08	+0.80%	15,238
05/20/2026	21.91	22.06	21.85	21.90	-0.40%	14,420
05/19/2026	22.22	22.22	21.55	21.99	-1.06%	37,942
05/18/2026	22.08	22.38	21.86	22.22	+0.26%	30,898
05/15/2026	22.32	22.41	22.14	22.17	-1.52%	15,408
05/14/2026	22.71	22.85	22.32	22.51	-0.43%	25,665
05/14/2026	$0.47 Dividend
05/13/2026	22.62	22.80	22.52	22.61	+0.13%	38,247
05/12/2026	22.61	22.73	22.45	22.58	-0.76%	30,438
05/11/2026	22.50	22.90	22.26	22.75	+1.89%	52,617
05/08/2026	22.26	22.51	22.15	22.33	+0.34%	42,491
05/07/2026	22.57	22.57	22.25	22.25	-1.07%	35,629
05/06/2026	21.63	22.49	21.63	22.49	+3.90%	70,008
05/05/2026	21.84	22.63	21.60	21.65	-0.44%	59,841
05/05/2026	$0.40 Earnings
05/04/2026	22.06	22.32	21.74	21.74	-1.39%	32,871
05/01/2026	22.14	22.53	21.87	22.05	-0.26%	19,007
04/30/2026	22.01	22.37	21.63	22.11	+0.83%	36,735
04/29/2026	21.96	22.01	21.58	21.92	+0.18%	12,956
04/28/2026	21.76	21.97	21.75	21.89	+1.29%	24,858
04/27/2026	21.61	21.77	21.58	21.61	-0.13%	22,424