Westlake Corporation (WLK)
NYSE: WLK · Real-Time Price · USD
64.56
+0.42 (0.65%)
At close: Oct 23, 2026, 4:00 PM EDT
64.97
+0.41 (0.64%)
After-hours: Oct 23, 2026, 7:50 PM EDT
Westlake Market Cap
Westlake has a market cap or net worth of $8.25 billion as of October 23, 2026. It is the 2,472nd most valuable company in the world and the 858th biggest in the United States. Its market cap has decreased by 14.62% in one year.
Market Cap
8.25B
Enterprise Value
12.27B
1-Year Change
-14.62%
Global Rank
Country Rank
#858 United States
Category
ChartMarket Cap Chart
Since August 12, 2004, Westlake's market cap has increased from $961.10M to $8.25B, an increase of 758.45%. That is a compound annual growth rate of 10.16%.
| Date | Market Cap | % Change |
|---|---|---|
| Oct 23, 2026 | 8.25B | -13.01% |
| Dec 31, 2025 | 9.48B | -35.72% |
| Dec 31, 2024 | 14.76B | -17.72% |
| Dec 29, 2023 | 17.93B | 37.14% |
| Dec 30, 2022 | 13.08B | 5.34% |
| Dec 31, 2021 | 12.42B | 19.12% |
| Dec 31, 2020 | 10.42B | 15.76% |
| Dec 31, 2019 | 9.00B | 5.34% |
| Dec 31, 2018 | 8.55B | -37.86% |
| Dec 29, 2017 | 13.75B | 90.57% |
| Dec 30, 2016 | 7.22B | 1.70% |
| Dec 31, 2015 | 7.10B | -12.71% |
| Dec 31, 2014 | 8.13B | -0.25% |
| Dec 31, 2013 | 8.15B | 54.10% |
| Dec 31, 2012 | 5.29B | 97.35% |
| Dec 30, 2011 | 2.68B | -6.85% |
| Dec 31, 2010 | 2.88B | 74.92% |
| Dec 31, 2009 | 1.64B | 53.79% |
| Dec 31, 2008 | 1.07B | -14.00% |
| Dec 31, 2007 | 1.24B | -39.26% |
| Dec 29, 2006 | 2.05B | 9.15% |
| Dec 30, 2005 | 1.88B | -13.46% |
| Dec 31, 2004 | 2.17B | 125.52% |
| Aug 12, 2004 | 961.10M | - |
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Market Capitalization
Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.
Formula: Market Cap = Stock Price * Shares Outstanding
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