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Westlake Chemical Corporation (WLK) — Price History
As of 2026-10-30 — refreshed nightly from the Closelooknet data lake. Diary readings, not advice.
The Closelooknet read
- Signal: Recovery attempt under the 200-day — Trades +0.5% vs the 50-day and -21.1% vs the 200-day average, 44.7% below the 52-week high and +23.6% off the 52-week low. Computed from daily closes. (as of 2026-10-30)
- Trend: Westlake Chemical Corporation trades 0.5% above its 50-day and 21.1% below its 200-day moving average. (as of 2026-10-30)
Westlake Chemical makes basic petrochemicals and plastics, such as ethylene, polyethylene, chlor-alkali and PVC, then turns some of that PVC into building products like siding, decking, pipes and window profiles. It sells to chemical processors, plastics fabricators, builders and municipalities across packaging, construction, automotive and water-treatment markets.
The full read — the desk's view, the earnings record, peers and the company snapshot — is on the WLK overview; the trend detail on the technical tab. Research diary readings, not advice.
Daily prices
| Date | Open | High | Low | Close | Chg % | Volume |
|---|---|---|---|---|---|---|
| 2026-10-30 | 66.08 | 68.35 | 66.08 | 68.28 | +3.44% | 1,182,009 |
| 2026-10-29 | 66.16 | 67.79 | 65.01 | 66.01 | +0.27% | 915,930 |
| 2026-10-28 | 66.02 | 66.63 | 65.10 | 65.83 | -0.51% | 693,897 |
| 2026-10-27 | 65.06 | 66.56 | 65.06 | 66.17 | +1.32% | 954,161 |
| 2026-10-26 | 64.56 | 66.91 | 64.56 | 65.31 | +1.16% | 960,893 |
| 2026-10-23 | 64.12 | 65.29 | 63.50 | 64.56 | +0.65% | 1,033,300 |
| 2026-10-22 | 61.20 | 64.40 | 60.71 | 64.14 | +5.42% | 1,279,000 |
| 2026-10-21 | 62.85 | 63.25 | 60.36 | 60.84 | -2.95% | 1,129,800 |
| 2026-10-20 | 62.63 | 62.98 | 61.72 | 62.69 | +0.64% | 599,967 |
| 2026-10-19 | 63.16 | 63.32 | 61.97 | 62.29 | -1.64% | 501,851 |
| 2026-10-16 | 63.65 | 64.39 | 62.08 | 63.33 | -0.44% | 775,500 |
| 2026-10-15 | 62.67 | 64.10 | 61.70 | 63.61 | +2.25% | 701,300 |
| 2026-10-14 | 61.50 | 62.36 | 61.00 | 62.21 | +0.57% | 831,300 |
| 2026-10-13 | 62.11 | 63.33 | 61.72 | 61.86 | +0.02% | 740,700 |
| 2026-10-12 | 61.86 | 62.32 | 60.99 | 61.85 | -0.71% | 987,600 |
| 2026-10-09 | 62.39 | 62.79 | 61.68 | 62.29 | -0.03% | 766,100 |
| 2026-10-08 | 61.50 | 62.35 | 60.78 | 62.31 | +1.28% | 1,166,600 |
| 2026-10-07 | 62.83 | 63.18 | 59.84 | 61.52 | -2.95% | 1,152,500 |
| 2026-10-06 | 64.56 | 64.80 | 63.07 | 63.39 | -1.89% | 916,700 |
| 2026-10-05 | 63.24 | 65.86 | 62.28 | 64.61 | +1.75% | 1,064,100 |
| 2026-10-02 | 62.67 | 64.92 | 61.80 | 63.50 | +1.65% | 1,505,000 |
| 2026-10-01 | 60.66 | 62.55 | 58.95 | 62.47 | +0.26% | 2,169,300 |
| 2026-09-30 | 63.01 | 63.61 | 62.30 | 62.31 | -1.70% | 1,283,400 |
| 2026-09-29 | 65.59 | 65.59 | 62.70 | 63.39 | -5.16% | 1,498,800 |
| 2026-09-28 | 67.65 | 67.75 | 66.31 | 66.84 | -1.28% | 444,200 |
| 2026-09-25 | 66.44 | 67.75 | 65.66 | 67.71 | +1.42% | 645,800 |
| 2026-09-24 | 68.40 | 68.56 | 66.72 | 66.76 | -2.43% | 585,300 |
| 2026-09-23 | 68.97 | 69.39 | 68.35 | 68.42 | -0.55% | 504,900 |
| 2026-09-22 | 67.98 | 70.30 | 67.84 | 68.80 | +1.52% | 694,600 |
| 2026-09-21 | 69.40 | 69.42 | 67.74 | 67.77 | -1.88% | 576,300 |
| 2026-09-18 | 70.03 | 70.07 | 68.74 | 69.07 | -2.13% | 721,400 |
| 2026-09-17 | 71.26 | 71.62 | 69.83 | 70.57 | -0.13% | 485,100 |
| 2026-09-16 | 69.81 | 71.63 | 69.39 | 70.66 | +0.91% | 537,400 |
| 2026-09-15 | 68.84 | 70.18 | 68.55 | 70.02 | +1.54% | 864,500 |
| 2026-09-14 | 71.05 | 72.48 | 68.63 | 68.96 | -2.61% | 976,500 |
| 2026-09-11 | 71.94 | 72.50 | 70.44 | 70.81 | -1.13% | 533,800 |
| 2026-09-10 | 71.87 | 73.75 | 70.69 | 71.62 | -0.22% | 891,900 |
| 2026-09-09 | 72.70 | 73.39 | 70.74 | 71.78 | -3.97% | 846,700 |
| 2026-09-08 | 75.56 | 76.14 | 74.63 | 74.75 | -0.05% | 561,100 |
| 2026-09-04 | 74.05 | 75.56 | 73.73 | 74.79 | +0.25% | 570,400 |
| 2026-09-03 | 77.19 | 77.45 | 74.51 | 74.60 | -2.19% | 595,000 |
| 2026-09-02 | 73.60 | 76.82 | 73.60 | 76.27 | +2.75% | 737,200 |
| 2026-09-01 | 75.02 | 75.59 | 73.45 | 74.23 | -1.12% | 577,000 |
| 2026-08-31 | 76.05 | 76.52 | 74.28 | 75.07 | -0.85% | 561,700 |
| 2026-08-28 | 74.72 | 76.02 | 73.92 | 75.71 | +2.41% | 750,800 |
| 2026-08-27 | 74.22 | 74.78 | 72.91 | 73.93 | -0.91% | 586,200 |
| 2026-08-26 | 74.47 | 74.93 | 72.90 | 74.61 | -0.25% | 819,300 |
| 2026-08-25 | 75.52 | 75.67 | 74.60 | 74.80 | -2.21% | 536,472 |
| 2026-08-24 | 78.67 | 79.17 | 76.19 | 76.49 | -3.09% | 630,392 |
| 2026-08-21 | 79.13 | 80.09 | 78.81 | 78.93 | +0.10% | 746,214 |
| 2026-08-20 | 78.58 | 80.19 | 78.01 | 78.85 | -0.76% | 681,441 |
| 2026-08-19 | 78.39 | 80.58 | 77.66 | 79.45 | +2.49% | 772,162 |
| 2026-08-18 | 78.28 | 79.04 | 76.45 | 77.52 | -0.88% | 865,076 |
| 2026-08-17 | 79.05 | 79.50 | 77.31 | 78.21 | -1.68% | 943,229 |
| 2026-08-14 | 80.66 | 80.86 | 79.37 | 79.55 | -0.80% | 834,100 |
| 2026-08-13 | 78.49 | 80.35 | 78.00 | 80.19 | +1.29% | 617,800 |
| 2026-08-12 | 80.38 | 80.41 | 78.03 | 79.17 | -2.07% | 734,200 |
| 2026-08-11 | 78.82 | 80.98 | 78.82 | 80.84 | +2.21% | 1,023,700 |
| 2026-08-10 | 77.26 | 79.31 | 76.62 | 79.09 | +2.09% | 1,298,000 |
| 2026-08-07 | 76.95 | 79.15 | 76.33 | 77.47 | +0.00% | 918,800 |
| 2026-08-06 | 79.77 | 80.57 | 77.35 | 77.47 | -1.61% | 906,600 |
| 2026-08-05 | 79.42 | 79.77 | 75.48 | 78.74 | -2.34% | 1,786,800 |
| 2026-08-04 | 72.86 | 80.64 | 72.72 | 80.63 | +15.37% | 3,009,300 |
| 2026-08-03 | 70.16 | 71.00 | 68.70 | 69.89 | -0.87% | 2,218,900 |
| 2026-07-31 | 71.03 | 71.50 | 68.48 | 70.50 | -1.70% | 1,501,500 |
| 2026-07-30 | 72.52 | 72.89 | 70.98 | 71.72 | -0.73% | 1,377,600 |
| 2026-07-29 | 72.88 | 73.01 | 71.26 | 72.25 | +0.12% | 1,404,100 |
| 2026-07-28 | 73.17 | 74.32 | 71.89 | 72.16 | -0.24% | 894,900 |
| 2026-07-27 | 73.22 | 73.54 | 71.86 | 72.33 | -2.02% | 1,340,500 |
| 2026-07-24 | 75.10 | 75.10 | 73.44 | 73.82 | -1.87% | 1,198,500 |
| 2026-07-23 | 78.17 | 78.33 | 74.70 | 75.23 | -2.37% | 772,100 |
| 2026-07-22 | 76.98 | 77.99 | 76.14 | 77.06 | +1.10% | 895,400 |
| 2026-07-21 | 77.26 | 77.35 | 75.34 | 76.22 | -0.90% | 908,300 |
| 2026-07-20 | 77.08 | 77.69 | 76.00 | 76.91 | -0.93% | 542,100 |
| 2026-07-17 | 78.20 | 79.84 | 77.08 | 77.63 | +0.71% | 592,000 |
| 2026-07-16 | 76.47 | 78.17 | 76.44 | 77.08 | +0.04% | 549,900 |
| 2026-07-15 | 76.50 | 77.61 | 76.07 | 77.05 | +0.01% | 589,100 |
| 2026-07-14 | 77.10 | 78.00 | 75.28 | 77.04 | +1.28% | 759,700 |
| 2026-07-13 | 76.71 | 78.07 | 75.29 | 76.07 | +0.77% | 941,900 |
| 2026-07-10 | 75.30 | 75.76 | 74.67 | 75.49 | +1.36% | 774,100 |
| 2026-07-09 | 75.22 | 76.26 | 74.28 | 74.48 | -1.74% | 878,000 |
| 2026-07-08 | 77.72 | 78.60 | 75.76 | 75.80 | -0.62% | 1,401,500 |
| 2026-07-07 | 75.04 | 77.13 | 74.82 | 76.27 | +1.97% | 1,836,100 |
| 2026-07-06 | 73.95 | 75.27 | 72.71 | 74.80 | +0.04% | 1,366,700 |
| 2026-07-02 | 72.88 | 75.13 | 72.88 | 74.77 | +2.68% | 1,381,800 |
| 2026-07-01 | 71.86 | 74.26 | 71.23 | 72.82 | -0.25% | 1,844,500 |
| 2026-06-30 | 74.68 | 75.21 | 72.71 | 73.00 | -2.30% | 1,039,700 |
| 2026-06-29 | 76.44 | 76.53 | 73.73 | 74.72 | -2.48% | 1,322,200 |
| 2026-06-26 | 76.00 | 77.18 | 75.58 | 76.62 | +0.10% | 1,570,100 |
| 2026-06-25 | 75.25 | 76.81 | 74.66 | 76.54 | +0.88% | 1,884,900 |
| 2026-06-24 | 75.74 | 76.67 | 73.77 | 75.87 | -0.80% | 2,043,300 |
| 2026-06-23 | 77.37 | 78.32 | 76.26 | 76.48 | -1.89% | 988,300 |
| 2026-06-22 | 79.29 | 79.70 | 77.27 | 77.95 | -2.90% | 1,025,400 |
| 2026-06-18 | 82.94 | 83.09 | 80.09 | 80.28 | -3.83% | 1,731,700 |
| 2026-06-17 | 83.67 | 87.27 | 83.23 | 83.48 | -1.01% | 736,400 |
| 2026-06-16 | 86.89 | 87.66 | 83.92 | 84.33 | -3.57% | 1,121,500 |
| 2026-06-15 | 87.65 | 88.76 | 86.16 | 87.45 | -1.19% | 620,700 |
| 2026-06-12 | 87.45 | 89.47 | 86.53 | 88.50 | +1.41% | 770,800 |
| 2026-06-11 | 88.43 | 89.23 | 86.43 | 87.27 | +0.17% | 531,700 |
| 2026-06-10 | 86.50 | 88.99 | 85.81 | 87.12 | +1.17% | 1,179,500 |
| 2026-06-09 | 85.63 | 86.92 | 84.38 | 86.11 | +1.00% | 1,184,300 |
| 2026-06-08 | 84.38 | 85.78 | 83.75 | 85.26 | +0.73% | 914,800 |
| 2026-06-05 | 84.29 | 85.34 | 82.98 | 84.64 | -0.72% | 826,300 |
| 2026-06-04 | 86.29 | 87.04 | 84.37 | 85.25 | -1.32% | 781,600 |
| 2026-06-03 | 86.46 | 87.90 | 85.75 | 86.39 | -0.51% | 867,200 |
| 2026-06-02 | 86.31 | 87.93 | 85.89 | 86.83 | +0.52% | 722,200 |
| 2026-06-01 | 87.50 | 88.99 | 86.34 | 86.38 | -0.52% | 916,700 |
| 2026-05-29 | 87.50 | 87.81 | 86.08 | 86.83 | -0.96% | 916,400 |
| 2026-05-28 | 87.45 | 88.70 | 87.14 | 87.67 | -0.16% | 857,500 |
| 2026-05-27 | 86.91 | 89.37 | 86.39 | 87.81 | -1.08% | 1,072,500 |
| 2026-05-26 | 88.77 | 89.39 | 88.06 | 88.77 | +0.19% | 693,100 |
| 2026-05-22 | 88.76 | 89.98 | 87.14 | 88.60 | +0.57% | 829,666 |
| 2026-05-21 | 88.73 | 89.13 | 86.54 | 88.10 | -0.45% | 873,287 |
| 2026-05-20 | 88.47 | 89.49 | 87.75 | 88.50 | -0.18% | 926,367 |
| 2026-05-19 | 91.23 | 91.23 | 88.15 | 88.66 | -3.06% | 1,098,982 |
| 2026-05-18 | 90.22 | 93.18 | 88.56 | 91.46 | +3.24% | 1,473,497 |
| 2026-05-15 | 91.19 | 91.53 | 88.33 | 88.59 | -3.21% | 1,870,441 |
| 2026-05-14 | 93.65 | 94.39 | 91.50 | 91.53 | -0.80% | 1,000,368 |
| 2026-05-13 | 97.34 | 98.30 | 92.22 | 92.27 | -4.42% | 1,364,456 |
| 2026-05-12 | 99.02 | 99.51 | 96.44 | 96.54 | -1.05% | 1,018,518 |
| 2026-05-11 | 94.88 | 98.95 | 93.86 | 97.56 | +3.95% | 1,499,188 |
| 2026-05-08 | 97.88 | 98.47 | 93.42 | 93.85 | -3.62% | 1,404,939 |
| 2026-05-07 | 98.95 | 100.05 | 97.10 | 97.38 | -2.54% | 1,413,971 |
| 2026-05-06 | 99.47 | 102.57 | 98.66 | 99.92 | -4.64% | 2,170,984 |
| 2026-05-05 | 102.70 | 106.93 | 101.23 | 104.78 | -8.78% | 1,799,940 |
| 2026-05-04 | 115.52 | 116.26 | 112.40 | 114.87 | -0.10% | 1,204,703 |
| 2026-05-01 | 115.75 | 117.05 | 114.78 | 114.99 | -0.25% | 1,162,016 |
| 2026-04-30 | 111.49 | 115.71 | 111.19 | 115.28 | +3.47% | 940,622 |
| 2026-04-29 | 112.09 | 112.48 | 110.48 | 111.41 | +0.96% | 929,972 |
| 2026-04-28 | 112.41 | 112.86 | 109.14 | 110.35 | -0.76% | 692,833 |
| 2026-04-27 | 111.91 | 113.66 | 109.42 | 111.19 | +0.50% | 794,561 |
| 2026-04-24 | 112.00 | 113.49 | 109.68 | 110.64 | -1.43% | 1,052,389 |
| 2026-04-23 | 114.35 | 115.60 | 110.58 | 112.25 | -1.78% | 982,944 |
| 2026-04-22 | 117.47 | 117.66 | 113.50 | 114.28 | -1.18% | 1,087,671 |
| 2026-04-21 | 112.93 | 115.88 | 112.15 | 115.65 | +1.55% | 854,582 |
| 2026-04-20 | 111.72 | 115.60 | 111.72 | 113.88 | +1.13% | 885,685 |
| 2026-04-17 | 114.00 | 114.51 | 110.79 | 112.61 | -5.37% | 1,491,705 |
| 2026-04-16 | 116.73 | 119.23 | 116.41 | 119.00 | +3.25% | 1,084,441 |
| 2026-04-15 | 118.13 | 118.41 | 114.42 | 115.25 | -2.27% | 951,543 |
| 2026-04-14 | 119.49 | 119.97 | 115.01 | 117.93 | -1.85% | 935,330 |
| 2026-04-13 | 120.00 | 121.94 | 118.50 | 120.15 | +1.50% | 870,986 |
| 2026-04-10 | 118.97 | 120.95 | 117.50 | 118.37 | +0.99% | 926,152 |
| 2026-04-09 | 120.99 | 122.53 | 116.26 | 117.21 | -2.98% | 1,318,732 |
| 2026-04-08 | 114.25 | 120.88 | 113.33 | 120.81 | -2.09% | 1,529,625 |
| 2026-04-07 | 120.52 | 124.23 | 119.44 | 123.39 | +3.23% | 1,026,058 |
| 2026-04-06 | 117.61 | 119.60 | 116.36 | 119.53 | +0.11% | 1,044,558 |
| 2026-04-02 | 116.60 | 120.00 | 114.49 | 119.40 | +2.42% | 934,032 |
| 2026-04-01 | 117.00 | 119.35 | 115.43 | 116.58 | -0.21% | 1,061,368 |
| 2026-03-31 | 116.75 | 119.69 | 114.47 | 116.82 | +0.71% | 1,229,574 |
| 2026-03-30 | 115.11 | 117.17 | 113.59 | 116.00 | +2.39% | 2,027,797 |
| 2026-03-27 | 111.80 | 114.44 | 111.80 | 113.29 | -0.15% | 1,083,889 |
| 2026-03-26 | 113.63 | 115.94 | 112.56 | 113.46 | -0.67% | 1,035,069 |
| 2026-03-25 | 114.41 | 116.19 | 113.23 | 114.22 | +0.11% | 1,119,548 |
| 2026-03-24 | 107.94 | 115.13 | 107.07 | 114.09 | +5.15% | 1,078,008 |
| 2026-03-23 | 107.79 | 111.47 | 107.00 | 108.50 | +2.24% | 1,549,760 |
| 2026-03-20 | 111.80 | 112.41 | 105.48 | 106.12 | -4.59% | 1,522,206 |
| 2026-03-19 | 110.89 | 112.67 | 109.40 | 111.23 | -1.22% | 948,700 |
| 2026-03-18 | 113.12 | 115.78 | 112.56 | 112.60 | +1.04% | 1,322,815 |
| 2026-03-17 | 111.25 | 114.97 | 110.18 | 111.44 | +0.59% | 1,213,539 |
| 2026-03-16 | 111.25 | 113.10 | 110.00 | 110.79 | -1.12% | 1,324,204 |
| 2026-03-13 | 115.00 | 116.46 | 111.50 | 112.04 | -1.91% | 1,606,816 |
| 2026-03-12 | 107.24 | 114.65 | 107.24 | 114.22 | +6.72% | 1,622,661 |
| 2026-03-11 | 104.75 | 107.68 | 103.54 | 107.03 | +1.89% | 1,051,542 |
| 2026-03-10 | 104.81 | 107.74 | 103.86 | 105.04 | -1.22% | 927,621 |
| 2026-03-09 | 102.18 | 107.45 | 100.54 | 106.34 | +3.05% | 1,215,568 |
| 2026-03-06 | 104.00 | 106.09 | 99.34 | 103.19 | -2.20% | 1,486,792 |
| 2026-03-05 | 107.50 | 112.21 | 104.84 | 105.51 | -0.58% | 1,999,633 |
| 2026-03-04 | 105.31 | 106.39 | 101.67 | 106.13 | +3.12% | 1,032,057 |
| 2026-03-03 | 103.49 | 104.86 | 99.60 | 102.92 | -3.62% | 1,569,437 |
| 2026-03-02 | 103.32 | 108.88 | 102.69 | 106.79 | +1.34% | 1,758,919 |
| 2026-02-27 | 98.20 | 106.00 | 97.89 | 105.38 | +5.02% | 1,287,594 |
| 2026-02-26 | 102.57 | 103.67 | 99.11 | 100.34 | -2.67% | 899,228 |
| 2026-02-25 | 106.36 | 106.66 | 101.56 | 103.09 | -1.04% | 1,689,360 |
| 2026-02-24 | 102.72 | 107.99 | 97.83 | 104.17 | +11.99% | 2,388,247 |
| 2026-02-23 | 93.84 | 95.23 | 91.76 | 93.02 | -1.46% | 1,303,280 |
| 2026-02-20 | 94.10 | 96.26 | 92.69 | 94.40 | -0.69% | 1,050,634 |
| 2026-02-19 | 98.54 | 100.00 | 93.10 | 95.06 | -4.49% | 1,528,666 |
| 2026-02-18 | 98.95 | 100.77 | 97.52 | 99.53 | +1.75% | 1,006,156 |
| 2026-02-17 | 99.58 | 101.30 | 96.47 | 97.82 | -2.26% | 1,385,834 |
| 2026-02-13 | 98.50 | 101.35 | 97.31 | 100.08 | +1.37% | 820,900 |
| 2026-02-12 | 100.69 | 103.00 | 96.67 | 98.73 | -1.62% | 1,183,580 |
| 2026-02-11 | 98.56 | 102.98 | 98.56 | 100.36 | +1.25% | 1,850,467 |
| 2026-02-10 | 97.03 | 100.24 | 96.34 | 99.12 | +2.74% | 1,218,654 |
| 2026-02-09 | 94.10 | 96.60 | 93.55 | 96.48 | +0.57% | 984,301 |
| 2026-02-06 | 94.09 | 96.31 | 93.18 | 95.93 | +4.08% | 1,094,709 |
| 2026-02-05 | 94.17 | 95.25 | 90.32 | 92.17 | -3.99% | 1,574,263 |
| 2026-02-04 | 93.05 | 98.06 | 93.05 | 96.00 | +5.61% | 2,645,719 |
| 2026-02-03 | 84.53 | 91.59 | 84.52 | 90.90 | +8.51% | 2,029,464 |
| 2026-02-02 | 79.89 | 84.27 | 78.61 | 83.77 | +5.61% | 1,571,912 |
| 2026-01-30 | 80.58 | 82.05 | 77.58 | 79.32 | -2.75% | 2,094,834 |
| 2026-01-29 | 82.10 | 82.69 | 78.44 | 81.56 | -0.39% | 1,370,200 |
| 2026-01-28 | 82.49 | 83.00 | 80.99 | 81.88 | +0.24% | 1,180,003 |
| 2026-01-27 | 83.52 | 84.55 | 81.65 | 81.68 | -2.95% | 1,252,107 |
| 2026-01-26 | 85.59 | 85.95 | 83.49 | 84.16 | -1.24% | 1,403,092 |
| 2026-01-23 | 86.90 | 87.39 | 85.08 | 85.22 | -1.76% | 1,279,468 |
| 2026-01-22 | 87.09 | 89.85 | 86.20 | 86.75 | +0.08% | 987,583 |
| 2026-01-21 | 84.99 | 87.97 | 84.32 | 86.68 | +3.29% | 1,826,427 |
| 2026-01-20 | 86.30 | 86.30 | 83.30 | 83.92 | -4.50% | 1,107,939 |
| 2026-01-16 | 86.63 | 88.88 | 86.63 | 87.87 | -0.49% | 904,946 |
| 2026-01-15 | 90.82 | 91.08 | 86.27 | 88.30 | -1.73% | 2,111,433 |
| 2026-01-14 | 85.63 | 90.19 | 85.06 | 89.85 | +5.71% | 1,600,484 |
| 2026-01-13 | 85.72 | 86.48 | 84.48 | 85.00 | +0.07% | 1,179,733 |
| 2026-01-12 | 83.00 | 85.13 | 82.63 | 84.94 | +2.09% | 2,078,892 |
| 2026-01-09 | 79.90 | 83.30 | 78.42 | 83.20 | +4.61% | 1,622,700 |
| 2026-01-08 | 73.86 | 81.55 | 73.50 | 79.53 | +6.79% | 1,759,316 |
| 2026-01-07 | 77.86 | 78.63 | 73.95 | 74.47 | -3.82% | 1,640,436 |
| 2026-01-06 | 74.90 | 78.33 | 74.39 | 77.43 | +3.27% | 1,358,350 |
| 2026-01-05 | 73.90 | 77.33 | 73.90 | 74.98 | +1.12% | 1,005,445 |
| 2026-01-02 | 74.57 | 75.17 | 72.69 | 74.15 | +0.28% | 919,751 |
| 2025-12-31 | 74.81 | 75.22 | 73.50 | 73.94 | -1.26% | 839,226 |
| 2025-12-30 | 74.42 | 75.44 | 74.29 | 74.88 | +0.67% | 944,983 |
| 2025-12-29 | 73.01 | 74.68 | 72.95 | 74.38 | +0.85% | 1,186,678 |
| 2025-12-26 | 73.63 | 74.01 | 73.18 | 73.75 | +0.10% | 704,445 |
| 2025-12-24 | 73.61 | 74.12 | 72.84 | 73.68 | +0.53% | 313,866 |
| 2025-12-23 | 74.04 | 74.33 | 71.87 | 73.29 | -1.48% | 1,328,051 |
| 2025-12-22 | 72.57 | 74.60 | 72.26 | 74.39 | +2.62% | 928,142 |
| 2025-12-19 | 75.44 | 75.44 | 71.79 | 72.49 | -3.06% | 1,786,703 |
| 2025-12-18 | 74.40 | 75.66 | 73.34 | 74.78 | +1.08% | 1,514,520 |
| 2025-12-17 | 73.20 | 75.44 | 73.08 | 73.98 | +0.87% | 1,921,705 |
| 2025-12-16 | 73.00 | 74.42 | 72.06 | 73.34 | -0.39% | 2,460,019 |
| 2025-12-15 | 76.02 | 76.33 | 71.27 | 73.63 | -1.03% | 3,755,898 |
| 2025-12-12 | 75.28 | 75.40 | 73.61 | 74.40 | -0.69% | 1,944,497 |
| 2025-12-11 | 72.61 | 75.09 | 72.23 | 74.92 | +3.01% | 1,960,492 |
| 2025-12-10 | 68.67 | 72.85 | 68.26 | 72.73 | +6.27% | 1,752,653 |
| 2025-12-09 | 68.69 | 71.03 | 68.42 | 68.44 | +1.21% | 1,464,185 |
| 2025-12-08 | 67.80 | 69.13 | 66.92 | 67.62 | -0.59% | 1,580,078 |
| 2025-12-05 | 68.24 | 70.34 | 67.53 | 68.02 | +0.07% | 1,488,022 |
| 2025-12-04 | 68.66 | 69.17 | 67.28 | 67.97 | -1.08% | 2,100,790 |
| 2025-12-03 | 66.70 | 70.31 | 66.45 | 68.71 | +3.17% | 1,538,510 |
| 2025-12-02 | 67.52 | 67.72 | 66.08 | 66.60 | -1.46% | 1,249,305 |
| 2025-12-01 | 65.50 | 70.06 | 65.50 | 67.59 | +1.17% | 2,358,770 |
| 2025-11-28 | 64.71 | 66.97 | 64.66 | 66.81 | +3.23% | 1,050,630 |
| 2025-11-26 | 62.84 | 65.22 | 62.77 | 64.72 | +2.94% | 1,524,243 |
| 2025-11-25 | 60.88 | 63.55 | 60.70 | 62.87 | +3.71% | 2,194,286 |
| 2025-11-24 | 58.86 | 61.04 | 58.62 | 60.62 | +2.69% | 3,632,069 |
| 2025-11-21 | 56.90 | 60.92 | 56.83 | 59.03 | +4.70% | 1,929,088 |
| 2025-11-20 | 57.88 | 59.37 | 56.33 | 56.38 | -1.95% | 1,914,968 |
| 2025-11-19 | 58.34 | 58.84 | 56.85 | 57.50 | -1.96% | 1,869,651 |
| 2025-11-18 | 59.05 | 59.68 | 57.43 | 58.65 | -0.68% | 1,410,319 |
| 2025-11-17 | 62.56 | 62.77 | 58.58 | 59.05 | -5.61% | 1,037,767 |
| 2025-11-14 | 64.26 | 64.26 | 62.38 | 62.56 | -3.62% | 858,458 |
| 2025-11-13 | 62.69 | 65.68 | 62.69 | 64.91 | +3.34% | 1,985,722 |
| 2025-11-12 | 63.45 | 64.58 | 62.30 | 62.81 | -1.01% | 1,189,170 |
| 2025-11-11 | 65.81 | 66.28 | 62.94 | 63.45 | -2.65% | 1,418,831 |
| 2025-11-10 | 65.85 | 65.85 | 64.21 | 65.18 | +0.35% | 1,203,104 |
| 2025-11-07 | 64.00 | 65.53 | 63.88 | 64.95 | +0.76% | 875,400 |
| 2025-11-06 | 65.92 | 66.30 | 64.33 | 64.46 | -2.13% | 1,114,723 |
| 2025-11-05 | 66.54 | 67.50 | 65.38 | 65.86 | -1.38% | 931,887 |
| 2025-11-04 | 67.46 | 68.19 | 66.76 | 66.78 | -2.20% | 874,025 |
| 2025-11-03 | 69.00 | 70.62 | 67.87 | 68.28 | -0.77% | 1,565,976 |
Most recent 250 sessions, newest first.
Seasonal returns
Best month historically: Jan (+7.78%). Worst month: May (-12.05%). Based on 5 years of daily data (2022–2026).
FAQ · from the current price data · as of 2026-10-30
Quick answers
What is Westlake Chemical Corporation's (WLK) latest close?
68.28 on 2026-10-30, from the Closelook data lake's daily price record.
What is WLK's 52-week high and low?
124.23 high and 56.33 low over the trailing 52 weeks, as of 2026-10-30.
What is Westlake Chemical Corporation's strongest and weakest month historically?
Historically, WLK's strongest calendar month has been Jan (average +7.78%) and its weakest May (average -12.05%), based on 5 years of daily data (2022–2026).
How many years of seasonality does this cover?
5 years (2022–2026), computed from 1024 daily bars in the Closelook data lake.
What is the current Closelooknet signal on WLK?
Recovery attempt under the 200-day: Trades +0.5% vs the 50-day and -21.1% vs the 200-day average, 44.7% below the 52-week high and +23.6% off the 52-week low. Computed from daily closes. As of 2026-10-30. A research diary reading, not advice.
Is WLK above its 50-day and 200-day moving averages?
Westlake Chemical Corporation trades 0.5% above its 50-day and 21.1% below its 200-day moving average (7.3% above its 20-day). As of 2026-10-30.