Top Companies' Market Cap Share in China and India Falls to 19% as Absence from AI Race Drives Concentration Lower
Alina Collins
The top ten companies in China and India now account for just 19% of market cap each, while Taiwan and South Korea — home to AI supply-chain linchpins — have surged to 56% and 65%. Whether a market has an AI winner is splitting Asia's equity structure in two.
Same continent, opposite directions — what is happening to concentration?
Taiwan's top-ten share rose from 49% to 56%; South Korea's leapt from 32% to roughly 65% — nearly doubling in a year.
China and India moved the other way: China fell from 26% to 19%, India from 22% to 19%. Hong Kong sits lowest, edging down from 10% to 9.8%.
This means → a single variable — whether a market has a dominant AI champion — is carving Asian equities into two structurally different species.
Why did Taiwan and Korea surge? One phrase: AI supply-chain positioning
Taiwan's benchmark index gained 54% year-to-date, driven almost entirely by TSMC.
Korea's Kospi roughly doubled, powered by SK Hynix and Samsung Electronics — the key suppliers of HBM (high-bandwidth memory, the ultra-fast memory AI chips need right next to them).
In plain terms = TSMC makes the AI chips; SK Hynix and Samsung make the memory that sits beside them. The closer a company is to AI hardware, the more its market cap pulls the entire index upward.
Why are China, India, and Hong Kong falling behind? Not zero growth — zero flagship
Saxo Markets strategist Charu Chanana summed it up: "In tech-heavy markets, AI and memory winners are pushing concentration higher. In India, China, and Hong Kong, concentration is falling because there is no single dominant AI winner."
India's Nifty 50 is down about 8% this year. Its heavyweights — Reliance Industries, HDFC Bank — are traditional giants. Even its leading tech names, TCS and Infosys, run legacy software services — the very segment seen as most vulnerable to AI disruption.
This means → it is not that these markets lack tech companies; it is that none can single-handedly rewrite an index's weight the way TSMC does.
China's twist: concentration drops, yet the index is up?
The CSI 300 is up about 5% year-to-date, yet top-ten share has narrowed. Money is rotating: banks, insurers, high-dividend SOEs, hardware makers, and AI-adjacent names are all drawing flows.
The year's biggest individual gainers are, in fact, AI-linked: smart-chip maker Cambricon, foundry SMIC, and fiber-optic manufacturer YOFC.
In plain terms = China's money is not piling into one giant — it is spreading across a batch of mid-cap AI plays and traditional sectors. The index rises, but the "flagship effect" weakens.
Is low concentration a flaw or a shield?
Low concentration — structural weakness or defensive edge?
BULL
Diversification as buffer
PL Capital's Siddharth Vora argues that if AI capex overheats and triggers a pullback, India's lower concentration and broader earnings base could offer relative resilience.
China's rotation is healthy
Chanana notes China's 'de-concentration' comes with positive returns — money is spreading, not fleeing.
BEAR
No engine
Without a super-heavyweight pulling the index, upward momentum stalls — India's Nifty 50, down ~8%, is Exhibit A.
AI absence is a hard gap
Taiwan and Korea show that AI positioning can reshape an entire market's valuation in months; if China and India cannot close that gap, their benchmarks will lag.
In plain terms = low concentration works like an airbag when markets are calm, but in an AI-driven bull run it means you missed the elevator.
What to watch next?
Taiwan and Korea set a clear test: can China and India produce AI supply-chain winners of comparable scale?
This reflects something deeper than short-term fund flows — it maps each economy's real position in the global AI value chain.
For investors: watch whether China's AI names (Cambricon, SMIC, and others) can graduate from "concept rotation" to "sustained index-weight drivers." That shift is the key signal for whether concentration can recover.
Content is for reference only, not financial advice.