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 →