Every ranking of the largest stock markets in the world pulls from the same few datasets. Here are the seven sites that publish them best, from official sources to quick references.

Official data first, aggregators second, screenshots of unknown charts never.

  • World Bank WDI: the canonical annual country dataset, free, 2000-2025.
  • World Federation of Exchanges: monthly market cap reported by member exchanges; the freshest official numbers.
  • Siblis Research: country rankings by market-cap-to-GDP with long histories.
  • CompaniesMarketCap: company-level market caps with country filters for the detail behind the ranking.
  • IndexMundi: a free world map of market value of publicly traded shares.
  • CapitalDrift (worldmarketstats.com): the 2025 ranking free, plus a weekly movers leaderboard; $10/mo for 2000-2025 charts.
  • Trading Economics: quick country market pages when you want the number fast.

Sources: World Bank WDI, Siblis Research

Start with the official data. Everything else is commentary.