China and India's Top Firms Cede Market Cap Share in AI Lag

Among major global stock markets, Bloomberg reports that China, India, and Hong Kong have emerged as the only places where the biggest companies now account for a smaller share of total market capitalization than they did a year ago. The direction matters as much as the data: it runs directly opposite to the United States, where AI-driven concentration at the top of equity markets has surged.

The numbers are specific. In both China and India, the ten largest companies in each nation now account for about 19% of total market capitalization, down from 26% and 22% respectively a year earlier. Hong Kong's figure slipped to 9.8% from 10%. The contrast with US markets is stark: the ten largest S&P 500 companies reportedly now control roughly 40% of the entire index, a level of concentration not seen in prior decades.

India's situation is particularly pointed. According to a related Bloomberg report on Indian tech's declining Nifty share, the combined weight of five information technology companies in the NSE Nifty 50 Index has fallen below 7.6%, the lowest in at least two decades, down from more than a fifth of the benchmark at its peak. Global investors are reportedly now chasing themes the Indian market largely lacks: chip manufacturing, computing infrastructure, and AI models.

The honest caveat is that market cap concentration is a useful but imperfect proxy for AI leadership, and what the reporting does not give you is a firm breakdown separating AI-specific capital flows from broader macro forces, currency moves, or index composition shifts. A Chinese model breakthrough achieving wide enterprise adoption, or a regulatory action on US megacaps, could reverse these ratios faster than the underlying capability gap would suggest. For investors making country-allocation decisions, though, the divergence is measurable and growing, and the open question is whether it closes by the laggards catching up or by the leaders stumbling.