Emerging vs. frontier vs. developed markets

The three tiers

Developed markets (the US, Japan, Germany, Australia) are large, deeply liquid, tightly regulated, and fully open to foreign capital. Emerging markets are the next tier: economies like China, India, Brazil, and Saudi Arabia with big investable stock markets that remain harder to access, less liquid, or riskier on governance. Frontier markets (Vietnam, Nigeria, Kazakhstan, most of covered Africa) are one step earlier: smaller exchanges, fewer listed companies, thinner trading.

There is also a fourth bucket most investors never see: 'standalone' markets, which index providers exclude from the main tiers entirely, usually after sanctions, capital controls, or a market shutdown make them uninvestable at index scale.

What actually separates the tiers

The dividing lines are less about GDP and more about market plumbing: how freely the currency converts, whether foreigners can register to trade without heavy paperwork, how reliable custody and settlement are, and how much stock actually trades. A rich country can sit below the developed tier for plumbing reasons: South Korea, one of the world's most advanced economies, has repeatedly missed the developed-market cut at MSCI largely over currency convertibility.

Frontier markets carry the highest potential growth premium and the highest practical friction: wide bid-ask spreads, few institutional participants, and sometimes no dedicated foreign fund at all.

Movement between tiers

Tiers are re-reviewed annually and countries genuinely move. Recent examples covered by this site's data: Bulgaria was moved from standalone to frontier in 2026, and Greece is scheduled to return to developed status at the May 2027 index review. Each move forces index-tracking money to reposition.

Emerging markets list →Frontier markets list →