WorldMarketStats ranks the largest stock markets in the world by country, using World Bank data stretching back to 2000. Earnings season is when that ranking gets stress-tested in public. The United States holds the top spot by an enormous margin, and a handful of American mega-caps are each worth more than the entire listed market of most countries. When those companies report, country-level market values move by amounts that would be a national event anywhere else.

The Q3 2026 season runs from October 14 to November 19 in our earnings calendar. Analysts expect index earnings growth of roughly 29.5 percent on FactSet consensus, which sets a high bar: this season is priced for good news. Here are the dates that matter most for anyone who thinks in countries, not just tickers.

The season in five dates

  • Wednesday, October 14: Bank of America and Morgan Stanley complete the US bank kickoff. Bank earnings are the market's first read on credit and the consumer, and the US market takes its tone from them.
  • Wednesday, October 21: Meta and Tesla after the close. Two of the largest single-company market values on earth report on the same evening.
  • Wednesday, October 28: Microsoft and Alphabet. The week of October 26 to 30 carries roughly 44 percent of the US index's market value, the densest concentration of the season.
  • Monday, November 2: Apple after the close. Apple's market value alone exceeds the total market cap of all but a few countries in our dataset.
  • Tuesday, November 17: Nvidia, the season's final mega-cap verdict, with Walmart closing the window on Thursday, November 19.

Why country investors should care about single stocks

The global market cap by country picture has a concentration problem hiding inside it. The US share of world market value rests on a remarkably small number of very large companies. When Microsoft, Apple or Nvidia moves 5 percent on an earnings night, the dollar amount created or erased rivals the annual change of a mid-sized national market. Country rotation strategies, including the ones tracked by CapitalDrift, have to treat mega-cap earnings as a country-level risk factor, not background noise.

The flip side matters too. A strong season from the mega-caps widens the US lead over China and everyone else, which feeds the momentum that country allocators chase. A weak season, especially weak guidance, compresses the gap faster than any single foreign market could close it on its own. Our companion piece on what mega-cap earnings mean for the rankings works through the mechanics, and the week-by-week watchlist turns the season into a schedule.

How to read the season from outside the US

Three habits help. First, watch guidance, not beats: with growth expectations near 30 percent, most beats are already paid for, and the outlook statements are what reprice markets. Second, watch the dollar and rate commentary on the bank calls in week one; US financial conditions transmit to emerging markets within days. Third, remember the calendar's limits: a few dates in our table, Amazon and McDonald's among them, were estimates rather than company confirmations when this page was built on October 14, 2026, and they are marked that way.

The full table, with timing and consensus estimates for 29 companies, is on the earnings calendar page. Pair it with the market cap by country chart and you have the season's cause and effect on two screens.