Where Stock Markets Run Deepest 2026
Introduction
On July 20, 2026, Jersey Mike’s — the fast-growing submarine sandwich chain — filed IPO terms that could value the company at nearly $8 billion, seeking up to $1.09 billion in new capital from public markets. The deal underscores the role stock exchanges play in helping businesses raise growth capital. But the depth of those markets varies enormously across countries.
Using data from the World Bank World Development Indicators, we examined stock market capitalization across 79 economies to find where public equity markets run deepest — and where they remain shallow.
What stock market capitalization measures
Stock market capitalization (or “market cap”) is the total value of all domestically listed companies’ shares outstanding. It’s the most commonly used measure of stock market size. A market cap of $68.9 trillion (the United States) means that if you added up the value of every share on U.S. exchanges, you’d get that figure.
Market cap is typically reported in current U.S. dollars, which means it fluctuates with both share prices and exchange rates. For a deeper dive on related metrics, see our guide on how private wealth moves across borders.
The Data
Top 15 stock markets by capitalization
| Rank | Country | Market Capitalization | Year |
|---|---|---|---|
| 1 | United States | $68.9 trillion | 2025 |
| 2 | China | $15.5 trillion | 2025 |
| 3 | India | $10.6 trillion | 2025 |
| 4 | Japan | $7.6 trillion | 2025 |
| 5 | Hong Kong | $6.1 trillion | 2025 |
| 6 | Canada | $4.6 trillion | 2025 |
| 7 | United Kingdom | $3.1 trillion | 2022 |
| 8 | Germany | $2.9 trillion | 2025 |
| 9 | South Korea | $2.8 trillion | 2025 |
| 10 | Switzerland | $2.5 trillion | 2025 |
| 11 | Saudi Arabia | $2.4 trillion | 2025 |
| 12 | Australia | $2.0 trillion | 2025 |
| 13 | South Africa | $1.4 trillion | 2025 |
| 14 | Spain | $1.3 trillion | 2025 |
| 15 | United Arab Emirates | $1.1 trillion | 2025 |
Other notable economies
| Country | Rank | Market Capitalization | Year |
|---|---|---|---|
| Brazil | 17 | $871.4 billion | 2025 |
| Singapore | 18 | $824.3 billion | 2025 |
| Mexico | 20 | $560.4 billion | 2025 |
| Turkiye | 24 | $404.3 billion | 2025 |
Smallest stock markets
At the other end, several economies have stock markets valued under $1 billion. These include smaller Caribbean and Pacific island nations, as well as some low-income countries where equity markets are nascent or newly established.
Regional patterns
North America dominates global markets. The United States alone accounts for roughly 44% of the world’s stock market capitalization — more than the next five countries combined. Canada adds another $4.6 trillion.
East Asia and Pacific is the second-largest region, led by China ($15.5T), Japan ($7.6T), and Hong Kong ($6.1T). India’s rapid rise to $10.6 trillion as the third-largest market reflects a sustained IPO boom and strong domestic investor participation.
Europe remains significant but fragmented. The United Kingdom ($3.1T), Germany ($2.9T), and Switzerland ($2.5T) lead, but no single European market cracks the top five globally. For context on how banking systems complement equity markets in different regions, see our analysis of bank capital adequacy 2026.
Middle East and Africa are growing from a smaller base. Saudi Arabia ($2.4T) has surged, while South Africa ($1.4T) remains Sub-Saharan Africa’s deepest market.
What 2026 looks like
The most recent data runs through 2025 for most countries. A few (like the United Kingdom) have 2022 as their latest figure. Stock market capitalization changes daily with market prices, but the ranking of the largest markets has been relatively stable:
- The United States has consistently been the largest market since the early 20th century
- China has grown from virtually nothing in 1990 to the world’s second-largest market
- India overtook Japan in 2024 to become the third-largest, driven by a wave of IPOs — a trend directly relevant to the Jersey Mike’s offering
For a look at how digital payment adoption relates to financial market development, see our report on the digital payments divide 2026.
Sources & method
Data comes from the World Bank World Development Indicators, specifically the indicator for market capitalization of listed domestic companies (CM.MKT.LCAP.CD). This measures the share price times the number of shares outstanding for all domestically listed companies.
- Primary source: World Bank WDI — Stock market capitalization (current US$)
- Data year: Primarily 2025; some countries have 2022–2024 data depending on reporting
- Countries covered: 79 economies with available data
- Methodology: Methodology page
- Note: Market cap figures are in nominal U.S. dollars and are not adjusted for inflation or PPP
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