If you invested $1000 in Westlake Corporation (WLK) 10 years ago, it would be worth $1,858.2 as of August 02, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $929.59, while $1000 invested 1 year ago would be worth $943.4. This corresponds to total returns of 85.82%, -7.04%, -5.66%, respectively, with annualized returns of 6.39%, -1.45%, -5.66%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| 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 |
| July 28, 2026 | 73.17 | 72.16 | 72.16 | 74.32 | 71.89 | 883,733 |
| July 27, 2026 | 73.22 | 72.33 | 72.33 | 73.54 | 71.86 | 1.34M |
| July 23, 2026 | 78.17 | 75.23 | 75.23 | 78.33 | 74.7 | 763,758 |
| July 22, 2026 | 76.98 | 77.06 | 77.06 | 77.99 | 76.14 | 895,411 |
| July 21, 2026 | 77.26 | 76.22 | 76.22 | 77.35 | 75.34 | 908,270 |
| July 20, 2026 | 77.08 | 76.91 | 76.91 | 77.69 | 76 | 542,073 |
| July 17, 2026 | 78.2 | 77.63 | 77.63 | 79.84 | 77.08 | 591,957 |
| July 16, 2026 | 76.47 | 77.08 | 77.08 | 78.17 | 76.44 | 549,860 |
| July 15, 2026 | 76.5 | 77.05 | 77.05 | 77.61 | 76.07 | 589,112 |
| July 14, 2026 | 77.1 | 77.04 | 77.04 | 78 | 75.28 | 759,650 |
| July 13, 2026 | 76.71 | 76.07 | 76.07 | 78.07 | 75.29 | 941,882 |
| July 10, 2026 | 75.3 | 75.49 | 75.49 | 75.76 | 74.67 | 774,136 |
| July 09, 2026 | 75.22 | 74.48 | 74.48 | 76.26 | 74.28 | 869,471 |
| July 08, 2026 | 77.72 | 75.8 | 75.8 | 78.6 | 75.76 | 1.4M |
| July 07, 2026 | 75.04 | 76.27 | 76.27 | 77.13 | 74.82 | 1.84M |
| July 06, 2026 | 73.95 | 74.8 | 74.8 | 75.27 | 72.71 | 1.37M |
| July 02, 2026 | 72.88 | 74.77 | 74.77 | 75.13 | 72.88 | 1.38M |
| July 01, 2026 | 71.86 | 72.82 | 72.82 | 74.26 | 71.23 | 1.84M |
| June 30, 2026 | 74.68 | 73 | 73 | 75.21 | 72.71 | 1.04M |
| June 29, 2026 | 76.44 | 74.72 | 74.72 | 76.53 | 73.73 | 1.32M |
| June 26, 2026 | 76 | 76.62 | 76.62 | 77.18 | 75.58 | 1.57M |
| June 25, 2026 | 75.25 | 76.54 | 76.54 | 76.81 | 74.66 | 1.86M |
| June 24, 2026 | 75.74 | 75.87 | 75.87 | 76.67 | 73.77 | 2.02M |
| June 23, 2026 | 77.37 | 76.48 | 76.48 | 78.32 | 76.26 | 988,310 |
| June 22, 2026 | 79.29 | 77.95 | 77.95 | 79.69 | 77.27 | 1.03M |
| June 18, 2026 | 82.94 | 80.28 | 80.28 | 83.09 | 80.09 | 1.73M |
| June 17, 2026 | 83.67 | 83.48 | 83.48 | 87.27 | 83.23 | 736,411 |
| June 16, 2026 | 86.89 | 84.33 | 84.33 | 87.66 | 83.92 | 1.12M |
| June 15, 2026 | 87.65 | 87.45 | 87.45 | 88.76 | 86.16 | 620,332 |
| June 12, 2026 | 87.45 | 88.5 | 88.5 | 89.47 | 86.53 | 770,813 |
| June 11, 2026 | 88.43 | 87.27 | 87.27 | 89.23 | 86.43 | 531,732 |
| June 10, 2026 | 86.5 | 87.12 | 87.12 | 88.99 | 85.81 | 1.18M |
| June 09, 2026 | 85.63 | 86.11 | 86.11 | 86.92 | 84.38 | 1.18M |
| June 08, 2026 | 84.38 | 85.26 | 85.26 | 85.78 | 83.75 | 914,802 |
| June 05, 2026 | 84.29 | 84.64 | 84.64 | 85.34 | 82.98 | 792,745 |
| June 04, 2026 | 86.29 | 85.25 | 85.25 | 87.04 | 84.37 | 736,343 |
| June 03, 2026 | 86.46 | 86.39 | 86.39 | 87.9 | 85.75 | 847,974 |
| June 02, 2026 | 86.31 | 86.83 | 86.83 | 87.93 | 85.89 | 722,187 |
| June 01, 2026 | 87.5 | 86.38 | 86.38 | 88.99 | 86.34 | 916,470 |
| May 29, 2026 | 87.5 | 86.83 | 86.83 | 87.81 | 86.08 | 915,783 |
| May 28, 2026 | 87.45 | 87.67 | 87.67 | 88.7 | 87.14 | 857,547 |
| May 27, 2026 | 86.91 | 87.81 | 87.81 | 89.37 | 86.39 | 1.05M |
| May 26, 2026 | 88.77 | 88.77 | 88.77 | 89.39 | 88.06 | 693,064 |
| May 22, 2026 | 88.76 | 88.6 | 88.6 | 89.98 | 87.14 | 172,044 |
| May 21, 2026 | 88.73 | 88.1 | 88.1 | 89.13 | 86.54 | 873,286 |
| May 20, 2026 | 88.47 | 88.5 | 88.5 | 89.49 | 87.75 | 721,910 |
| May 19, 2026 | 89.98 | 88.66 | 88.66 | 91.23 | 88.15 | 876,854 |
| May 18, 2026 | 90.22 | 91.46 | 91.46 | 93.18 | 88.57 | 1.47M |
| May 15, 2026 | 91.19 | 88.59 | 88.59 | 91.53 | 88.33 | 1.87M |
| May 14, 2026 | 93.65 | 91.53 | 91.53 | 94.39 | 91.5 | 1M |
| May 13, 2026 | 97.34 | 92.27 | 92.27 | 98.3 | 92.26 | 1.02M |
| May 12, 2026 | 99.02 | 96.54 | 96.54 | 99.51 | 96.44 | 1.02M |
| May 11, 2026 | 94.88 | 97.56 | 97.56 | 98.95 | 93.86 | 1.5M |
| May 08, 2026 | 97.88 | 93.85 | 93.85 | 98.47 | 93.42 | 1.4M |
| May 07, 2026 | 98.95 | 97.38 | 97.38 | 100.05 | 97.1 | 1.41M |
| May 06, 2026 | 99.47 | 99.92 | 99.92 | 102.57 | 98.66 | 2.17M |
| May 05, 2026 | 102.7 | 104.78 | 104.78 | 106.93 | 101.23 | 1.8M |