The following pages rank the largest publicly traded companies across major industries by market capitalisation. Each ranking shows the largest listed companies in that industry, alongside their market capitalisation and country of primary listing.
Capital.com market cap rankings classify each company by its primary source of revenue. This broadly reflects how classification systems such as the Global Industry Classification Standard (GICS) and Industry Classification Benchmark (ICB) group companies by their principal business activities.
For diversified companies, the activity that generates the largest share of revenue determines the industry. As a result, a company may appear in a different category from the one most commonly associated with its brand.
If its revenue mix changes materially, its classification may also change, moving it between industry rankings even if its market capitalisation stays the same.
Grouping companies by industry and market capitalisation helps put comparisons in context, particularly where businesses face similar demand drivers, cost structures and regulation.
Market cap measures a company's equity market value, not its profitability, competitive strength or investment quality. Industry rankings can show which companies have the highest market values, how concentrated that value is and how smaller companies compare.
Some industries concentrate much of their combined market value in a few companies, while others spread it more widely.
