As of November 2026 LyondellBasell has a market cap of HK$163.39 Billion. This makes LyondellBasell the world's 1120th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Nov 13th, 2026 the market cap of LyondellBasell was reported to be: