This column argues that one aspect of changing global economic dynamism is the changing stock market capitalisation of select countries between 2006 and 2026. Stock market capitalisation is the share price times the number of shares outstanding (including their several classes) for listed domestic companies. Investment funds, unit trusts, and companies whose only business goal is to hold shares of other listed companies are excluded.

Tables 1A and 1B provide a list of the top ten countries by stock market capitalisation in 2006 and 2026, respectively, a twenty-year period which is long enough to assess the changing dynamics of the global economy.

Table 1A and 1B: Stock Market Capitalisation of Top Ten Economies in the World

Table 1A¹

Table 1B¹

Based on the data in Tables 1A and 1B, the following observations may be made.

1. Since 2006, the sheer scale of stock market capitalisation, and more broadly, financialisation of the global economy, has increased manifold. Thus, China’s equity markets did not rank among the top ten in 2006, but since then, they have grown by 25 times. As there is some overlap between the stock market capitalisation of China and Hong Kong, it is difficult to estimate the net figure. Their combined stock market capitalisation is over 100 per cent of their 2026 GDP.

The Stock market capitalisation of the USA, by far the dominant stock market globally, with remarkable depth, grew by nearly five times between 2006 and 2026, to reach USD 75 trillion. This is nearly three -fifths of Global GDP, and 236 per cent of the USA’s GDP in 2026.

2. In 2006, only two of the ten largest stock market capitalisations were by Asian countries. In 2026, the corresponding number is six out of ten. This has meant that the stock market capitalisation of Europe has lagged considerably. From six in 2006, only two countries from Europe are in the top ten by market capitalisation. Even this number is likely to decline. This is suggested while financialization has expanded vastly globally, the stock market capitalisation of London, reflected as the UK in the Tables, one of the major global financial centres, was USD 3.8 trillion in 2006 and USD 3.9 trillion in 2026, essentially remaining constant over twenty years.
3. A major trend has been that those countries with globally competitive technology companies, including China, Taiwan, and South Korea, have exhibited remarkable improvement in their rankings. As of May 2026, the Asian companies to have reached or exceeded the US$1 trillion market capitalisation milestone are TSMC (Taiwan Semiconductor Manufacturing Company) and Samsung Electronics. Both companies have achieved this valuation, fuelled by massive demand for artificial intelligence (AI) chips and technology infrastructure. Resource-rich countries, such as Canada, have also exhibited high stock market capitalisation rankings.
4. In the sharp increase in stock market capitalisation, the concentration of a few shares in market capitalisation has played an important role. Concentrated stock markets occur when a small number of companies or one or two sectors account for a disproportionate share of the overall market capitalisation and performance. This trend has recently reached historic highs, particularly in the US, with the top 10 stocks in the S&P (Standard and Poor) 500 index constituting around 40 per cent of its value. This phenomenon is driven by mega-cap technology companies’ outperformance, economies of scale, and increased investor risk exposure. With the debt of the USA reaching USD 39 trillion, with a high risk of refinancing of its debt, such high stock market concentration poses a particularly high risk to the domestic and global investors.

Table 2 provides estimates of concentrated stock market indices as of early 2026. The data suggest that Nikkei 225 and FTSE 100 are even more highly concentrated than the S&P 500.

Table 2: Highly Concentrated stock indices Globally²

Taiwan and South Korea also have highly concentrated stock markets, driven by a massive AI-fuelled surge in semiconductor and technology hardware companies. TSMC dominates Taiwan (30-35%+ market cap), while Samsung and SK Hynix anchor South Korea. Combined, they added over USD 4.6 trillion in value over the past year, helping the two countries to significantly improve their global positions in stock market capitalisation³.

5. In 2006, India did not find a place in the top ten countries in stock market capitalisation, but in 2026, it ranked fifth, a remarkable rise. Its stock market capitalisation is around 120 per cent of its 2026 GDP. India does not have listed high-technology or AI companies like Taiwan and South Korea, but its stock market has a significant presence of large companies in the consumption, information technology services, and infrastructure sectors. Increasingly, defence sector companies are also becoming prominent in the stock market. Moreover, it has consistently been growing well above the global average and well above its peers, and this trend is likely to continue. It is in the early stages of nurturing technology companies as well. There are at least four chip fabrication plants under construction involving partnerships between global leaders and Indian companies. The prospects of India remaining in the top 10 countries by the stock market capitalisation are therefore promising.

To conclude, a comparison of the top 10 countries by stock market capitalisation does indicate a rising role of Asian countries, with a relative decline of countries in Europe; the importance of technology and AI companies in stock market valuation; and increasing concentration in stock markets, portending difficult challenges for policymakers and higher risks for investors globally.

References

1. https//x.Com/DavidinglesTV- Accessed on May 10 2026
2. https://www.trustnet.com/news/13463229/the-most-concentrated-equity-markets-in-the-world-and-its-not-the-us Accessed on 10 May 2026
3. https://www.moneycontrol.com/news/business/earnings/ai-driven-rally-puts-taiwan-korea-within-striking-distance-of-india-s-m-cap-13909575.html-Accessed on 10 May 2026