Westlake Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Sep 11, 2026	71.94	72.50	70.44	70.81	70.81	-1.13%	533,784
Sep 10, 2026	71.87	73.75	70.69	71.62	71.62	-0.22%	852,095
Sep 9, 2026	72.70	73.39	70.74	71.78	71.78	-3.97%	846,696
Sep 8, 2026	75.56	76.14	74.63	74.75	74.75	-0.05%	561,113
Sep 4, 2026	74.05	75.56	73.73	74.79	74.79	0.25%	570,436
Sep 3, 2026	77.19	77.45	74.51	74.60	74.60	-2.19%	594,985
Sep 2, 2026	73.60	76.82	73.60	76.27	76.27	2.75%	737,246
Sep 1, 2026	75.02	75.59	73.45	74.23	74.23	-1.12%	576,999
Aug 31, 2026	76.05	76.52	74.28	75.07	75.07	-0.85%	560,984
Aug 28, 2026	74.72	76.02	73.92	75.71	75.71	2.41%	731,522
Aug 27, 2026	74.22	74.78	72.91	73.93	73.93	-0.91%	567,299
Aug 26, 2026	74.47	74.93	72.90	74.61	74.61	-0.25%	800,105
Aug 25, 2026	75.52	75.67	74.60	74.80	74.80	-1.52%	536,471
Aug 24, 2026	78.67	79.18	76.19	76.49	75.96	-3.09%	614,370
Aug 21, 2026	79.13	80.09	78.81	78.93	78.38	0.10%	746,214
Aug 20, 2026	78.58	80.19	78.01	78.85	78.30	-0.76%	681,441
Aug 19, 2026	78.39	80.58	77.66	79.45	78.90	2.49%	772,162
Aug 18, 2026	78.28	79.04	76.45	77.52	76.98	-0.88%	865,076
Aug 17, 2026	79.05	79.50	77.31	78.21	77.67	-1.68%	943,229
Aug 14, 2026	80.66	80.86	79.37	79.55	79.00	-0.80%	834,151
Aug 13, 2026	78.49	80.35	78.00	80.19	79.63	1.29%	617,876
Aug 12, 2026	80.38	80.41	78.04	79.17	78.62	-2.07%	734,238
Aug 11, 2026	78.82	80.98	78.82	80.84	80.28	2.21%	1,023,728
Aug 10, 2026	77.26	79.31	76.62	79.09	78.54	2.09%	1,298,027
Aug 7, 2026	76.95	79.15	76.33	77.47	76.93	-	918,774
Aug 6, 2026	79.77	80.57	77.35	77.47	76.93	-1.61%	906,624
Aug 5, 2026	79.42	79.77	75.48	78.74	78.19	-2.34%	1,786,782
Aug 4, 2026	72.86	80.64	72.72	80.63	80.07	15.37%	3,009,323
Aug 3, 2026	70.16	71.00	68.70	69.89	69.40	-0.87%	2,219,119
Jul 31, 2026	71.03	71.50	68.48	70.50	70.01	-1.70%	1,501,496
Jul 30, 2026	72.52	72.90	70.98	71.72	71.22	-0.73%	1,377,600
Jul 29, 2026	72.88	73.01	71.26	72.25	71.75	0.12%	1,404,131
Jul 28, 2026	73.17	74.32	71.89	72.16	71.66	-0.24%	894,855
Jul 27, 2026	73.22	73.54	71.86	72.33	71.83	-2.02%	1,340,531
Jul 24, 2026	75.10	75.10	73.44	73.82	73.31	-1.87%	1,198,656
Jul 23, 2026	78.17	78.33	74.70	75.23	74.71	-2.37%	772,138
Jul 22, 2026	76.98	77.99	76.14	77.06	76.52	1.10%	895,412
Jul 21, 2026	77.26	77.35	75.34	76.22	75.69	-0.90%	908,270
Jul 20, 2026	77.08	77.69	76.00	76.91	76.37	-0.93%	542,075
Jul 17, 2026	78.20	79.84	77.08	77.63	77.09	0.71%	591,959
Jul 16, 2026	76.47	78.17	76.44	77.08	76.54	0.04%	549,860
Jul 15, 2026	76.50	77.61	76.07	77.05	76.51	0.01%	589,112
Jul 14, 2026	77.10	78.00	75.28	77.04	76.50	1.28%	759,650
Jul 13, 2026	76.71	78.07	75.29	76.07	75.54	0.77%	941,927
Jul 10, 2026	75.30	75.76	74.67	75.49	74.96	1.36%	774,141
Jul 9, 2026	75.22	76.26	74.28	74.48	73.96	-1.74%	877,961
Jul 8, 2026	77.72	78.60	75.76	75.80	75.27	-0.62%	1,401,474
Jul 7, 2026	75.04	77.13	74.82	76.27	75.74	1.97%	1,836,081
Jul 6, 2026	73.95	75.27	72.71	74.80	74.28	0.04%	1,366,672
Jul 2, 2026	72.88	75.13	72.88	74.77	74.25	2.68%	1,381,772