NYSE - Delayed Quote
USD
Westlake Corporation (WLK)
68.28
+2.27
(+3.44%)
At close: October 30 at 4:00:02 PM EDT
68.28
0.00
(0.00%)
After hours: October 30 at 4:12:32 PM EDT
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Date
Open
High
Low
Close
Close price adjusted for splits.
Adj Close
Adjusted close price adjusted for splits and dividend and/or capital gain distributions.
Volume
Oct 30, 2026
66.08
68.35
66.08
68.28
68.28
1,182,000
Oct 29, 2026
66.16
67.79
65.01
66.01
66.01
915,900
Oct 28, 2026
66.02
66.63
65.10
65.83
65.83
693,900
Oct 27, 2026
65.06
66.56
65.06
66.17
66.17
954,100
Oct 26, 2026
64.56
66.91
64.56
65.31
65.31
960,900
Oct 23, 2026
64.12
65.29
63.50
64.56
64.56
1,033,300
Oct 22, 2026
61.20
64.40
60.71
64.14
64.14
1,279,000
Oct 21, 2026
62.85
63.25
60.36
60.84
60.84
1,129,800
Oct 20, 2026
62.63
62.98
61.72
62.69
62.69
600,000
Oct 19, 2026
63.16
63.32
61.97
62.29
62.29
501,800
Oct 16, 2026
63.65
64.39
62.08
63.33
63.33
775,500
Oct 15, 2026
62.67
64.10
61.70
63.61
63.61
701,300
Oct 14, 2026
61.50
62.36
61.00
62.21
62.21
831,300
Oct 13, 2026
62.11
63.33
61.72
61.86
61.86
740,700
Oct 12, 2026
61.86
62.32
60.99
61.85
61.85
987,600
Oct 9, 2026
62.39
62.79
61.68
62.29
62.29
766,100
Oct 8, 2026
61.50
62.35
60.78
62.31
62.31
1,166,600
Oct 7, 2026
62.83
63.18
59.84
61.52
61.52
1,152,500
Oct 6, 2026
64.56
64.80
63.07
63.39
63.39
916,700
Oct 5, 2026
63.24
65.86
62.28
64.61
64.61
1,064,100
Oct 2, 2026
62.67
64.92
61.80
63.50
63.50
1,505,000
Oct 1, 2026
60.66
62.55
58.95
62.47
62.47
2,169,300
Sep 30, 2026
63.01
63.61
62.30
62.31
62.31
1,283,400
Sep 29, 2026
65.59
65.59
62.70
63.39
63.39
1,498,800
Sep 28, 2026
67.65
67.75
66.31
66.84
66.84
444,200
Sep 25, 2026
66.44
67.75
65.66
67.71
67.71
645,800
Sep 24, 2026
68.40
68.56
66.72
66.76
66.76
585,300
Sep 23, 2026
68.97
69.39
68.35
68.42
68.42
504,900
Sep 22, 2026
67.98
70.30
67.84
68.80
68.80
694,600
Sep 21, 2026
69.40
69.42
67.74
67.77
67.77
576,300
Sep 18, 2026
70.03
70.07
68.74
69.07
69.07
721,400
Sep 17, 2026
71.26
71.62
69.83
70.57
70.57
485,100
Sep 16, 2026
69.81
71.63
69.39
70.66
70.66
537,400
Sep 15, 2026
68.84
70.18
68.55
70.02
70.02
864,500
Sep 14, 2026
71.05
72.48
68.63
68.96
68.96
976,500
Sep 11, 2026
71.94
72.50
70.44
70.81
70.81
533,800
Sep 10, 2026
71.87
73.75
70.69
71.62
71.62
891,900
Sep 9, 2026
72.70
73.39
70.74
71.78
71.78
846,700
Sep 8, 2026
75.56
76.14
74.63
74.75
74.75
561,100
Sep 4, 2026
74.05
75.56
73.73
74.79
74.79
570,400
Sep 3, 2026
77.19
77.45
74.51
74.60
74.60
595,000
Sep 2, 2026
73.60
76.82
73.60
76.27
76.27
737,200
Sep 1, 2026
75.02
75.59
73.45
74.23
74.23
577,000
Aug 31, 2026
76.05
76.52
74.28
75.07
75.07
561,700
Aug 28, 2026
74.72
76.02
73.92
75.71
75.71
750,800
Aug 27, 2026
74.22
74.78
72.91
73.93
73.93
586,200
Aug 26, 2026
74.47
74.93
72.90
74.61
74.61
819,300
Aug 25, 2026
0.533
Dividend
Dividends on any given ex-date include regular and any special dividends
Aug 25, 2026
75.52
75.67
74.60
74.80
74.80
536,500
Aug 24, 2026
78.67
79.18
76.19
76.49
75.96
630,400
Aug 21, 2026
79.13
80.09
78.81
78.93
78.38
746,200
Aug 20, 2026
78.58
80.19
78.01
78.85
78.30
681,400
Aug 19, 2026
78.39
80.58
77.66
79.45
78.90
772,200
Aug 18, 2026
78.28
79.04
76.45
77.52
76.98
865,100
Aug 17, 2026
79.05
79.50
77.31
78.21
77.67
943,200
Aug 14, 2026
80.66
80.86
79.37
79.55
79.00
834,100
Aug 13, 2026
78.49
80.35
78.00
80.19
79.63
617,800
Aug 12, 2026
80.38
80.41
78.03
79.17
78.62
734,200
Aug 11, 2026
78.82
80.98
78.82
80.84
80.28
1,023,700
Aug 10, 2026
77.26
79.31
76.62
79.09
78.54
1,298,000
Aug 7, 2026
76.95
79.15
76.33
77.47
76.93
918,800
Aug 6, 2026
79.77
80.57
77.35
77.47
76.93
906,600
Aug 5, 2026
79.42
79.77
75.48
78.74
78.19
1,786,800
Aug 4, 2026
72.86
80.64
72.72
80.63
80.07
3,009,300
Aug 3, 2026
70.16
71.00
68.70
69.89
69.40
2,218,900
Jul 31, 2026
71.03
71.50
68.48
70.50
70.01
1,501,500
Jul 30, 2026
72.52
72.89
70.98
71.72
71.22
1,377,600
Jul 29, 2026
72.88
73.01
71.26
72.25
71.75
1,404,100
Jul 28, 2026
73.17
74.32
71.89
72.16
71.66
894,900
Jul 27, 2026
73.22
73.54
71.86
72.33
71.83
1,340,500
Jul 24, 2026
75.10
75.10
73.44
73.82
73.31
1,198,500
Jul 23, 2026
78.17
78.33
74.70
75.23
74.71
772,100
Jul 22, 2026
76.98
77.99
76.14
77.06
76.52
895,400
Jul 21, 2026
77.26
77.35
75.34
76.22
75.69
908,300
Jul 20, 2026
77.08
77.69
76.00
76.91
76.37
542,100
Jul 17, 2026
78.20
79.84
77.08
77.63
77.09
592,000
Jul 16, 2026
76.47
78.17
76.44
77.08
76.54
549,900
Jul 15, 2026
76.50
77.61
76.07
77.05
76.51
589,100
Jul 14, 2026
77.10
78.00
75.28
77.04
76.50
759,700
Jul 13, 2026
76.71
78.07
75.29
76.07
75.54
941,900
Jul 10, 2026
75.30
75.76
74.67
75.49
74.96
774,100
Jul 9, 2026
75.22
76.26
74.28
74.48
73.96
878,000
Jul 8, 2026
77.72
78.60
75.76
75.80
75.27
1,401,500
Jul 7, 2026
75.04
77.13
74.82
76.27
75.74
1,836,100
Jul 6, 2026
73.95
75.27
72.71
74.80
74.28
1,366,700
Jul 2, 2026
72.88
75.13
72.88
74.77
74.25
1,381,800
Jul 1, 2026
71.86
74.26
71.23
72.82
72.31
1,844,500
Jun 30, 2026
74.68
75.21
72.71
73.00
72.49
1,039,700
Jun 29, 2026
76.44
76.53
73.73
74.72
74.20
1,322,200
Jun 26, 2026
76.00
77.18
75.58
76.62
76.09
1,570,100
Jun 25, 2026
75.25
76.81
74.66
76.54
76.01
1,884,900
Jun 24, 2026
75.74
76.67
73.77
75.87
75.34
2,043,300
Jun 23, 2026
77.37
78.32
76.26
76.48
75.95
988,300
Jun 22, 2026
79.29
79.70
77.27
77.95
77.41
1,025,400
Jun 18, 2026
82.94
83.09
80.09
80.28
79.72
1,731,700
Jun 17, 2026
83.67
87.27
83.23
83.48
82.90
736,400
Jun 16, 2026
86.89
87.66
83.92
84.33
83.74
1,121,500
Jun 15, 2026
87.65
88.76
86.16
87.45
86.84
620,700
Jun 12, 2026
87.45
89.47
86.53
88.50
87.88
770,800
Jun 11, 2026
88.43
89.23
86.43
87.27
86.66
531,700
Jun 10, 2026
86.50
88.99
85.81
87.12
86.51
1,179,500
Jun 9, 2026
85.63
86.92
84.38
86.11
85.51
1,184,300
Jun 8, 2026
84.38
85.78
83.75
85.26
84.67
914,800
Jun 5, 2026
84.29
85.34
82.98
84.64
84.05
826,300
Jun 4, 2026
86.29
87.04
84.37
85.25
84.66
781,600
Jun 3, 2026
86.46
87.90
85.75
86.39
85.79
867,200
Jun 2, 2026
86.31
87.93
85.89
86.83
86.22
722,200
Jun 1, 2026
87.50
88.99
86.34
86.38
85.78
916,700
May 29, 2026
87.50
87.81
86.08
86.83
86.22
916,400
May 28, 2026
87.45
88.70
87.14
87.67
87.06
857,500
May 27, 2026
0.53
Dividend
Dividends on any given ex-date include regular and any special dividends
May 27, 2026
86.91
89.37
86.39
87.81
87.20
1,072,500
May 26, 2026
88.77
89.39
88.06
88.77
87.63
693,100
May 22, 2026
88.76
89.98
87.14
88.60
87.46
829,700
May 21, 2026
88.73
89.13
86.54
88.10
86.96
873,300
May 20, 2026
88.47
89.49
87.75
88.50
87.36
926,400
May 19, 2026
91.23
91.23
88.15
88.66
87.52
1,099,000
May 18, 2026
90.22
93.18
88.57
91.46
90.28
1,473,500
May 15, 2026
91.19
91.53
88.33
88.59
87.45
1,870,400
May 14, 2026
93.65
94.39
91.50
91.53
90.35
1,000,400
May 13, 2026
97.34
98.30
92.22
92.27
91.08
1,364,300
May 12, 2026
99.02
99.51
96.44
96.54
95.29
1,018,500
May 11, 2026
94.88
98.95
93.86
97.56
96.30
1,499,200
May 8, 2026
97.88
98.47
93.42
93.85
92.64
1,404,800
May 7, 2026
98.95
100.05
97.10
97.38
96.12
1,413,900
May 6, 2026
99.48
102.57
98.66
99.92
98.63
2,171,000
May 5, 2026
102.70
106.93
101.23
104.78
103.43
1,799,900
May 4, 2026
115.52
116.26
112.40
114.87
113.39
1,204,700
May 1, 2026
115.75
117.05
114.78
114.99
113.51
1,162,000
Apr 30, 2026
111.49
115.71
111.19
115.28
113.79
940,600
Apr 29, 2026
112.09
112.48
110.48
111.41
109.97
930,000
Apr 28, 2026
112.41
112.86
109.14
110.35
108.93
692,800
Apr 27, 2026
111.91
113.66
109.42
111.19
109.76
794,600
Apr 24, 2026
112.00
113.49
109.68
110.64
109.21
1,052,400
Apr 23, 2026
114.35
115.60
110.58
112.25
110.80
982,900
Apr 22, 2026
117.47
117.66
113.50
114.28
112.81
1,087,600
Apr 21, 2026
112.93
115.88
112.15
115.65
114.16
854,600
Apr 20, 2026
111.72
115.60
111.72
113.88
112.41
885,700
Apr 17, 2026
114.00
114.51
110.79
112.61
111.16
1,491,700
Apr 16, 2026
116.73
119.23
116.41
119.00
117.47
1,084,400
Apr 15, 2026
118.13
118.41
114.43
115.25
113.76
951,300
Apr 14, 2026
119.49
119.97
115.01
117.93
116.41
935,300
Apr 13, 2026
120.00
121.94
118.50
120.15
118.60
871,000
Apr 10, 2026
118.97
120.95
117.50
118.37
116.84
926,100
Apr 9, 2026
120.99
122.53
116.26
117.21
115.70
1,318,700
Apr 8, 2026
114.25
120.88
113.33
120.81
119.25
1,529,600
Apr 7, 2026
120.52
124.23
119.44
123.39
121.80
1,026,100
Apr 6, 2026
117.61
119.60
116.37
119.53
117.99
1,044,200
Apr 2, 2026
116.60
120.00
114.49
119.40
117.86
934,000
Apr 1, 2026
117.00
119.35
115.43
116.58
115.08
1,061,400
Mar 31, 2026
116.75
119.69
114.47
116.82
115.31
1,229,600
Mar 30, 2026
115.11
117.17
113.59
116.00
114.50
2,027,700
Mar 27, 2026
111.80
114.44
111.80
113.29
111.83
1,083,900
Mar 26, 2026
113.63
115.94
112.56
113.46
112.00
1,035,100
Mar 25, 2026
114.41
116.19
113.23
114.22
112.75
1,119,500
Mar 24, 2026
107.94
115.13
107.07
114.09
112.62
1,078,000
Mar 23, 2026
107.79
111.47
107.00
108.50
107.10
1,549,800
Mar 20, 2026
111.80
112.41
105.48
106.12
104.75
1,522,200
Mar 19, 2026
110.89
112.67
109.40
111.23
109.80
948,700
Mar 18, 2026
113.12
115.78
112.56
112.60
111.15
1,322,700
Mar 17, 2026
111.25
114.97
110.18
111.44
110.00
1,213,500
Mar 16, 2026
111.25
113.10
110.00
110.79
109.36
1,324,200
Mar 13, 2026
115.00
116.46
111.50
112.04
110.60
1,606,600
Mar 12, 2026
107.24
114.65
107.24
114.22
112.75
1,622,500
Mar 11, 2026
104.75
107.68
103.54
107.03
105.65
1,051,500
Mar 10, 2026
104.81
107.74
103.86
105.04
103.69
927,400
Mar 9, 2026
102.18
107.45
100.54
106.34
104.97
1,215,400
Mar 6, 2026
104.00
106.10
99.34
103.19
101.86
1,486,700
Mar 5, 2026
107.50
112.21
104.84
105.51
104.15
1,999,600
Mar 4, 2026
105.31
106.39
101.67
106.13
104.76
1,031,800
Mar 3, 2026
0.53
Dividend
Dividends on any given ex-date include regular and any special dividends
Mar 3, 2026
103.49
104.86
99.60
102.92
101.59
1,569,400
Mar 2, 2026
103.32
108.88
102.70
106.79
104.89
1,758,900
Feb 27, 2026
98.20
106.00
97.90
105.38
103.50
1,287,600
Feb 26, 2026
102.57
103.67
99.11
100.34
98.55
899,200
Feb 25, 2026
106.36
106.66
101.56
103.09
101.26
1,689,400
Feb 24, 2026
102.72
107.99
97.83
104.17
102.32
2,388,100
Feb 23, 2026
93.84
95.23
91.76
93.02
91.36
1,303,200
Feb 20, 2026
94.10
96.26
92.69
94.40
92.72
1,050,600
Feb 19, 2026
98.54
100.00
93.10
95.06
93.37
1,528,700
Feb 18, 2026
98.95
100.77
97.52
99.53
97.76
1,006,200
Feb 17, 2026
99.58
101.30
96.48
97.82
96.08
1,385,800
Feb 13, 2026
98.50
101.35
97.31
100.08
98.30
820,900
Feb 12, 2026
100.69
103.00
96.68
98.73
96.97
1,183,600
Feb 11, 2026
98.56
102.98
98.56
100.36
98.57
1,850,400
Feb 10, 2026
97.03
100.24
96.34
99.12
97.36
1,218,600
Feb 9, 2026
94.10
96.60
93.55
96.48
94.76
983,900
Feb 6, 2026
94.09
96.31
93.18
95.93
94.22
1,094,700
Feb 5, 2026
94.17
95.25
90.32
92.17
90.53
1,574,300
Feb 4, 2026
93.05
98.06
93.05
96.00
94.29
2,645,700
Feb 3, 2026
84.53
91.59
84.52
90.90
89.28
2,029,100
Feb 2, 2026
79.89
84.27
78.61
83.77
82.28
1,571,900
Jan 30, 2026
80.58
82.05
77.58
79.32
77.91
2,094,800
Jan 29, 2026
82.10
82.69
78.44
81.56
80.11
1,370,200
Jan 28, 2026
82.49
83.00
80.99
81.88
80.42
1,180,000
Jan 27, 2026
83.52
84.55
81.65
81.68
80.23
1,252,100
Jan 26, 2026
85.59
85.95
83.49
84.16
82.66
1,403,100
Jan 23, 2026
86.90
87.39
85.08
85.22
83.70
1,279,500
Jan 22, 2026
87.09
89.85
86.20
86.75
85.21
987,600
Jan 21, 2026
84.99
87.97
84.32
86.68
85.14
1,826,400
Jan 20, 2026
86.30
86.30
83.30
83.92
82.43
1,107,900
Jan 16, 2026
86.63
88.88
86.63
87.87
86.31
904,900
Jan 15, 2026
90.82
91.08
86.27
88.30
86.73
2,111,400
Jan 14, 2026
85.63
90.19
85.07
89.85
88.25
1,600,500
Jan 13, 2026
85.72
86.48
84.48
85.00
83.49
1,179,700
Jan 12, 2026
83.00
85.13
82.63
84.94
83.43
2,078,900
Jan 9, 2026
79.90
83.30
78.42
83.20
81.72
1,622,700
Jan 8, 2026
73.86
81.55
73.50
79.53
78.11
1,759,300
Jan 7, 2026
77.86
78.63
73.95
74.47
73.14
1,640,400
Jan 6, 2026
74.90
78.34
74.39
77.43
76.05
1,358,400
Jan 5, 2026
73.90
77.33
73.90
74.98
73.65
1,005,400
Jan 2, 2026
74.57
75.17
72.69
74.15
72.83
919,800
Dec 31, 2025
74.81
75.22
73.50
73.94
72.62
839,200
Dec 30, 2025
74.42
75.45
74.29
74.88
73.55
945,000
Dec 29, 2025
73.01
74.68
72.96
74.38
73.06
1,186,700
Dec 26, 2025
73.63
74.01
73.18
73.75
72.44
704,400
Dec 24, 2025
73.61
74.12
72.84
73.68
72.37
313,900
Dec 23, 2025
74.04
74.33
71.87
73.29
71.99
1,328,100
Dec 22, 2025
72.57
74.60
72.26
74.39
73.07
928,100
Dec 19, 2025
75.44
75.44
71.79
72.49
71.20
1,786,700
Dec 18, 2025
74.40
75.66
73.34
74.78
73.45
1,514,500
Dec 17, 2025
73.20
75.44
73.08
73.98
72.66
1,921,700
Dec 16, 2025
73.00
74.42
72.06
73.34
72.03
2,460,000
Dec 15, 2025
76.02
76.33
71.27
73.63
72.32
3,755,900
Dec 12, 2025
75.28
75.40
73.61
74.40
73.08
1,944,500
Dec 11, 2025
72.61
75.09
72.23
74.92
73.59
1,960,500
Dec 10, 2025
68.67
72.85
68.26
72.73
71.44
1,752,400
Dec 9, 2025
68.69
71.03
68.42
68.44
67.22
1,464,200
Dec 8, 2025
67.80
69.13
66.92
67.62
66.42
1,580,000
Dec 5, 2025
68.24
70.34
67.53
68.02
66.81
1,488,000
Dec 4, 2025
68.66
69.17
67.28
67.97
66.76
2,100,800
Dec 3, 2025
66.70
70.31
66.45
68.71
67.49
1,538,500
Dec 2, 2025
67.52
67.73
66.09
66.60
65.41
1,249,300
Dec 1, 2025
65.50
70.06
65.50
67.59
66.39
2,362,300
Nov 28, 2025
64.71
66.97
64.66
66.81
65.62
1,050,600
Nov 26, 2025
62.84
65.22
62.78
64.72
63.57
1,524,200
Nov 25, 2025
0.53
Dividend
Dividends on any given ex-date include regular and any special dividends
Nov 25, 2025
60.88
63.55
60.70
62.87
61.75
2,194,300
Nov 24, 2025
58.86
61.04
58.62
60.62
59.02
3,632,100
Nov 21, 2025
56.90
60.92
56.83
59.03
57.47
1,929,100
Nov 20, 2025
57.88
59.37
56.33
56.38
54.89
1,915,000
Nov 19, 2025
58.34
58.84
56.85
57.50
55.98
1,869,700
Nov 18, 2025
59.05
59.68
57.43
58.65
57.10
1,410,300
Nov 17, 2025
62.56
62.77
58.58
59.05
57.49
1,037,700
Nov 14, 2025
64.26
64.26
62.39
62.56
60.91
858,500
Nov 13, 2025
62.69
65.68
62.69
64.91
63.20
1,985,700
Nov 12, 2025
63.45
64.58
62.30
62.81
61.15
1,189,200
Nov 11, 2025
65.81
66.28
62.94
63.45
61.78
1,418,800
Nov 10, 2025
65.85
65.85
64.21
65.18
63.46
1,203,100
Nov 7, 2025
64.00
65.53
63.89
64.95
63.24
875,400
Nov 6, 2025
65.92
66.30
64.33
64.46
62.76
1,114,600
Nov 5, 2025
66.54
67.50
65.38
65.86
64.12
931,900
Nov 4, 2025
67.46
68.19
66.76
66.78
65.02
874,000
Nov 3, 2025
69.00
70.62
67.87
68.28
66.48
1,566,000
Oct 31, 2025
67.91
69.52
67.33
68.81
66.99
1,949,500
