Westlake Corporation
WLK | NYSE
$70.46
+$2.18 (+3.19%)
Nov 2, 2026, 12:02 PM ET · Market open
Market Cap History History
Annual Market Cap Change Annual Change
| Date | Market Cap | Change | % Change |
|---|---|---|---|
| Oct 30, 2026 | $8.74B | -$715.98M | -7.57% |
| Dec 26, 2025 | $9.46B | -$5.24B | -35.66% |
| Dec 27, 2024 | $14.7B | -$3.19B | -17.85% |
| Dec 29, 2023 | $17.89B | $4.78B | +36.40% |
| Dec 30, 2022 | $13.12B | $700.93M | +5.64% |
| Dec 31, 2021 | $12.42B | $1.82B | +17.17% |
| Dec 31, 2020 | $10.6B | $1.65B | +18.41% |
| Dec 27, 2019 | $8.95B | $591.06M | +7.07% |
| Dec 28, 2018 | $8.36B | -$5.39B | -39.20% |
| Dec 29, 2017 | $13.75B | $6.54B | +90.67% |
| Dec 30, 2016 | $7.21B | $119.59M | +1.69% |
| Dec 31, 2015 | $7.09B | -$1.14B | -13.82% |
| Dec 26, 2014 | $8.23B | $190.48M | +2.37% |
| Dec 27, 2013 | $8.04B | $2.91B | +56.61% |
| Dec 28, 2012 | $5.13B | $2.62B | +103.97% |
| Dec 30, 2011 | $2.52B | -$191.02M | -7.06% |
| Dec 31, 2010 | $2.71B | $1.15B | +73.57% |
| Dec 31, 2009 | $1.56B | $596.18M | +61.87% |
| Dec 26, 2008 | $963.64M | -$238.05M | -19.81% |
| Dec 28, 2007 | $1.2B | -$734.11M | -37.92% |
| Dec 29, 2006 | $1.94B | n/a | n/a |
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