| LYB Market Cap History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the LYB market cap history going back to 11/9/2010:
Also see: LYB Shares Outstanding History and LYB YTD Return |
LYB Market Cap History — LyondellBasell Industries NV Capitalization Over Time
As of 2/18/2026 LyondellBasell Industries NV has a market cap of 18.03 billion. Investors often follow the LYB market cap history to compare the size of the company over time.
This page shows LYB market capitalization trends over time, with 62 market cap datapoints presented, dating back to 11/9/2010.
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LYB Historical Market Cap: +0.75% CAGR 
Mouse over chart for data details
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| LYB Stock Price Chart |
| About LyondellBasell Industries NV |
| LyondellBasell Industries N.V. is a chemical company creating solutions for everyday sustainable living. Its segments include Olefins and Polyolefins-Americas (O&P-Americas), Olefins and Polyolefins-Europe, Asia, International (O&P-EAI), Intermediates and Derivatives (I&D), Advanced Polymer Solutions (APS), Refining, and Technology. The O&P-Americas and O&P-EAI segments produce and market olefins and co-products, polyethylene, and polypropylene. The I&D segment produces and markets propylene oxide (PO) and its derivatives, oxyfuels and related products, and intermediate chemicals, such as styrene monomer (SM), and acetyls. We show 62 historical shares outstanding datapoints in our LYB shares outstanding history coverage, used to compute LYB market cap on those dates. Understanding the changing numbers of shares outstanding, the changing share price, and the resulting changing LYB market cap history over the course of time is important for investors interested in comparing LYB's market cap history versus its peers. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies, and then calculating their respective market caps. Comparing the share price of LYB versus a peer is one thing; comparing LYB market cap versus a peer is a completely different story. Furthermore, via fluctuation both in per-share price and in the number of shares outstanding (via issuance of new shares over time, the repurchase of existing shares), the market cap for a company like LYB can fluctuate over the course of history. With this page we aim to empower investors researching LYB by allowing them to research the LYB market cap history. |
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| Video: The Importance of Market Cap | |
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Video: The Importance of Market Cap
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| LyondellBasell Industries NV (LYB) is categorized under the Materials sector; to help you further research historical market cap numbers, below are some other companies in the same sector:
MAGN Market Cap History MAS Market Cap History MATV Market Cap History MBII Market Cap History MEOH Market Cap History MERC Market Cap History METC Market Cap History MGA Market Cap History MHK Market Cap History MLM Market Cap History More Materials companies » |
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