CITIC Securities Report: AI Wave Drives Structural Rally in A-Shares, Shift in Market Cap Leaders Points to Era-Defining Theme
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CITIC Securities argues that A-shares' new market-cap king CXMT and new price king Lianxun Instruments both point the same way — the AI wave is repricing China's equity market — while chasing sector rotations can cost investors more than 20% in losses.
The "stock king" changed hands — what does that tell us?
On July 27, 2026, CXMT (长鑫科技) overtook ICBC on its listing day to become A-shares' largest stock by market cap; less than a month later it passed Tencent, topping both the A- and H-share markets.
The price crown shifted even earlier: on May 18, 2026, Lianxun Instruments (联讯仪器) replaced Kweichow Moutai; Moutai now sits third.
This means → whether ranked by cap or share price, every new "king" comes from the tech sector — the market is voting for the AI era with real money.
How big is the AI rally, really?
Since ChatGPT's launch in November 2022, the U.S. semiconductor index has risen 493% and the IT index 202% — both at least double the S&P 500's 97% gain over the same period.
South Korea's SK Hynix surged 1,136%; the KOSPI electrical-equipment and electronics index rose 357%.
In A-shares, telecom gained 289% and electronics 141%, versus just 33% for the Shanghai Composite; these two sectors produced 24 ten-baggers and 262 doublers — nearly 60% of all A-share ten-baggers.
In plain terms = over the past three-plus years, investors who bet on AI have dramatically outperformed the broader market — and this is a global phenomenon, not unique to China.
Upstream, midstream, downstream — whose turn is it now?
CITIC draws a parallel with the lithium-battery cycle: in an industry bull market, upstream booms first, then mid- and downstream catch up.
The AI wave has followed the same script — the upstream optical-module index has soared over 1,500% since ChatGPT, while midstream cloud computing rose 113% and downstream AI applications 132%, far behind.
Since July, however, a rotation signal has appeared: the optical-module index dropped more than 20%, while cloud computing and AI applications outperformed it by roughly 20 percentage points.
This means → capital may be shifting from the overextended upstream into mid- and downstream plays — a pattern strikingly similar to how the lithium cycle unfolded.
What does chasing hot sectors actually cost you?
CITIC quantifies a real scenario: selling coal-sector dividend stocks at end-June to chase telecom would have produced a loss exceeding 20% to date.
By contrast, a barbell portfolio — a strategy that splits capital between two extremes, one aggressive, one defensive — of 50% telecom (offense) + 50% coal (defense) would be up roughly 26% year-to-date.
In plain terms = the cost of frequent switching is far higher than most investors assume; betting both ends of the barbell beats going all-in on one side.
What if you can't time the rotation?
CITIC's advice: if you cannot pinpoint when upstream-to-downstream rotation will happen, index-level exposure across the entire value chain is a viable alternative.
Case in point — from early 2021 to June 2022, upstream lithium-mining stocks rose over 200%, midstream battery makers over 60%, and downstream EV stocks under 40%; a broad new-energy index covering all three tiers gained nearly 50% — not as explosive as upstream, but solidly mid-pack.
This reflects the report's real conclusion: it is not about which sector to chase, but about conviction and patience — getting the direction right and holding on matters more than nailing every rotation.
Content is for reference only, not financial advice.