Westlake Corporation (WLK) NYSE

Currency In USD

WLK Historical Return

If you invested $1000 in Westlake Corporation (WLK) 10 years ago, it would be worth $1,418.9 as of October 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $676.66, while $1000 invested 1 year ago would be worth $830.78. This corresponds to total returns of 41.89%, -32.33%, -16.92%, respectively, with annualized returns of 3.56%, -7.52%, -16.92%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

WLK Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
October 22, 2026	61.2	64.14	64.14	64.4	60.71	1.28M
October 21, 2026	62.85	60.84	60.84	63.25	60.36	1.13M
October 20, 2026	62.63	62.69	62.69	62.98	61.72	599,964
October 19, 2026	63.16	62.29	62.29	63.32	61.97	501,848
October 16, 2026	63.65	63.33	63.33	64.39	62.08	775,520
October 15, 2026	62.67	63.61	63.61	64.1	61.7	701,318
October 14, 2026	61.5	62.21	62.21	62.36	61	828,315
October 13, 2026	62.11	61.86	61.86	63.33	61.72	736,192
October 12, 2026	61.86	61.85	61.85	62.32	60.99	987,287
October 09, 2026	62.39	62.29	62.29	62.79	61.68	766,074
October 08, 2026	61.5	62.31	62.31	62.35	60.78	1.17M
October 07, 2026	62.83	61.52	61.52	63.18	59.84	1.15M
October 06, 2026	64.56	63.39	63.39	64.8	63.07	916,742
October 05, 2026	63.24	64.61	64.61	65.86	62.28	1.06M
October 02, 2026	62.67	63.5	63.5	64.92	61.8	1.35M
October 01, 2026	60.66	62.47	62.47	62.55	58.95	1.99M
September 30, 2026	63.01	62.31	62.31	63.61	62.3	1.21M
September 29, 2026	65.59	63.39	63.39	65.59	62.7	1.5M
September 28, 2026	67.65	66.84	66.84	67.75	66.31	444,140
September 25, 2026	66.44	67.71	67.71	67.75	65.66	645,758
September 24, 2026	68.4	66.76	66.76	68.56	66.72	585,203
September 23, 2026	68.97	68.42	68.42	69.39	68.35	504,871
September 22, 2026	67.98	68.8	68.8	70.3	67.84	620,624
September 21, 2026	69.4	67.77	67.77	69.42	67.74	558,252
September 18, 2026	70.03	69.07	69.07	70.07	68.74	721,352
September 17, 2026	71.26	70.57	70.57	71.62	69.83	484,735
September 16, 2026	69.81	70.66	70.66	71.63	69.39	535,857
September 15, 2026	68.84	70.02	70.02	70.18	68.55	864,507
September 11, 2026	71.94	70.81	70.81	72.5	70.44	533,785
September 10, 2026	71.87	71.62	71.62	73.75	70.69	854,135
September 09, 2026	72.7	71.78	71.78	73.39	70.74	846,697
September 08, 2026	75.56	74.75	74.75	76.14	74.63	561,114
September 04, 2026	74.05	74.79	74.79	75.56	73.73	570,442
September 03, 2026	77.19	74.6	74.6	77.44	74.51	594,986
September 02, 2026	73.6	76.27	76.27	76.82	73.6	737,249
September 01, 2026	75.02	74.23	74.23	75.59	73.44	577,000
August 31, 2026	76.05	75.07	75.07	76.52	74.28	561,384
August 28, 2026	74.72	75.71	75.71	76.02	73.92	731,523
August 27, 2026	74.22	73.93	73.93	74.78	72.91	586,206
August 26, 2026	74.47	74.61	74.61	74.93	72.9	800,105
August 25, 2026	75.52	74.8	74.8	75.67	74.6	536,471
August 24, 2026	78.67	76.49	76.49	79.18	76.19	630,390
August 21, 2026	79.13	78.93	78.93	80.09	78.81	746,213
August 20, 2026	78.58	78.85	78.85	80.19	78.01	681,440
August 19, 2026	78.39	79.45	79.45	80.58	77.66	772,160
August 18, 2026	78.28	77.52	77.52	79.04	76.45	865,074
August 17, 2026	79.05	78.21	78.21	79.5	77.31	943,228
August 14, 2026	80.66	79.55	79.55	80.86	79.37	834,100
August 13, 2026	78.49	80.19	80.19	80.35	78	617,736
August 12, 2026	80.38	79.17	79.17	80.41	78.03	734,237
August 11, 2026	78.82	80.84	80.84	80.98	78.82	1.02M
August 10, 2026	77.26	79.09	79.09	79.31	76.61	1.3M
August 07, 2026	76.95	77.47	77.47	79.15	76.33	918,773
August 06, 2026	79.77	77.47	77.47	80.57	77.35	897,235
August 05, 2026	79.42	78.74	78.74	79.77	75.48	1.79M
August 04, 2026	72.86	80.63	80.63	80.64	72.72	3.01M
August 03, 2026	70.16	69.89	69.89	71	68.7	2.22M
July 31, 2026	71.03	70.5	70.5	71.5	68.48	1.5M
July 30, 2026	72.52	71.72	71.72	72.89	70.98	1.38M
July 29, 2026	72.88	72.25	72.25	73.01	71.26	1.4M