China's AI trade, which only two years ago rode a wave of Beijing-backed optimism, has come down hard, and in doing so it has tested the patience of ordinary savers who believed the state stood behind them. The STAR50 index has shed forty percent in under four months, a loss that touches households and small businesses far beyond the trading floors of Shanghai and Shenzhen. It is a familiar human story of enthusiasm outrunning prudence, now playing out against a government still trying to coax its markets toward a steadier, more patient kind of growth. Whether the bubble's bursting becomes a l
In China, the AI Bubble Has Already Burst as the STAR50 Index Falls 40% in Under Four Months
Small investors, including a Hainan business owner, are nursing losses after buying into rallies in retail favourites such as Unitree and MetaX.
Frustration over a Beijing-backed theme ending so badly has pushed investors to safety
Mark
Forty percent in under four months sounds enormous. How does it compare with the US?
Mimi
It's far sharper. The Nasdaq is down about 6% from a record set three weeks ago, while China's STAR50 has lost $480 billion in value and the broad blue-chip index is down about 20% from June.
Mark
What set it off?
Luke
Nothing obvious, and the article says so. Traders cite high prices, tax bills and the threat of foreign bans on Chinese data-centre equipment, but those are traders' explanations, not a confirmed trigger.
Mark
Why does it hit ordinary people so hard?
Mimi
AI stocks are 42% of market capitalisation and 57% of turnover, per Goldman Sachs, in a market dominated by small investors. Chen Wensheng in Hainan bought because he felt state backing made Unitree safe.
Mark
So official support became part of the pitch.
Luke
That's his perception. Unitree did have state-backed funds as investors, but that doesn't mean Beijing promised anything. The regulator hasn't commented.
Mark
Is it over?
Luke
Unknown. The STAR50 is still around 100 times trailing earnings versus 30 for the Nasdaq 100, so some fear more downside. Yet Goldman and BNP see opportunities. Those are forecasts, not facts.
Mimi
And Wang Zhuo's line captures the skeptics: price wars come for everyone, and all bubbles burst.
El Pulso
- Roughly $480 billion has vanished from China's AI and chip leaders in less than four months, with the STAR50 down forty percent.
- Retail investors who piled into hyped listings like Unitree and MetaX now watch their gains reverse, and many feel betrayed by a theme Beijing appeared to back.
- Regulators are fielding advice from market participants while the China Securities Regulatory Commission has yet to respond publicly, leaving the path to recovery unclear.
- Some fund managers are retreating to defensive assets and expecting tech fundraising and IPOs to stall, while a few bargain hunters argue that opportunities are emerging.
- Valuations still sit well above US tech benchmarks, so investors fear the slide may deepen before any stabilisation arrives.
China's AI trade, which only two years ago rode a wave of Beijing-backed optimism, has come down hard, and in doing so it has tested the patience of ordinary savers who believed the state stood behind them. The STAR50 index has shed forty percent in under four months, a loss that touches households and small businesses far beyond the trading floors of Shanghai and Shenzhen. It is a familiar human story of enthusiasm outrunning prudence, now playing out against a government still trying to coax its markets toward a steadier, more patient kind of growth. Whether the bubble's bursting becomes a lasting lesson or merely a pause before the next speculative surge will depend on valuations, foreign curbs, and the trust that Chinese investors are willing to extend once again.
Shares in Unitree, the robot-maker whose August listing drew retail orders eight thousand times over, have lost half their value since its first day of trading. That single figure captures what has happened to China's AI trade, which has collapsed while much of the world's tech sector has only wobbled.
The STAR50 index, home to the country's AI and chip leaders, has fallen forty percent in less than four months, erasing roughly $480 billion. The rally had run for two years on promises of stimulus, and its unraveling has stalled Beijing's hope of replacing the old boom-and-bust cycle with a steadier, slow-bull market. No single trigger caused the sell-off. Traders cite high prices, tax concerns, and the possibility that Washington could bar Chinese equipment from data centres. A Beijing fund manager summed it up bluntly: a speculative frenzy has become a bursting bubble.
The pain is widespread because AI stocks make up 42% of China's market value and a large share of trading, in a market dominated by small investors. In Hainan, Chen Wensheng bought in because he believed official backing stood behind names like Unitree. Now he and his friends are nursing losses, and their frustration is pushing many toward safer assets and slowing tech fundraising.
Valuations suggest more pain may be coming, with the STAR50 still priced far above the Nasdaq 100. Not everyone is pessimistic. Some analysts see the sell-off as a healthy correction, and a few major firms have kept Chinese AI stocks on their recommendation lists. Still, many mainland investors are waiting for lower prices. The coming months will show whether US restrictions materialise and whether valuations fall far enough to win back confidence.
Shares in Unitree, the robot-maker whose stock listing in August was 8,000 times oversubscribed by retail buyers, have lost half their value since the first day of trading. That is one measure of what has happened to China's AI trade, which has collapsed while much of the world's tech sector merely wobbles.
The mainland STAR50 index, home to the country's AI and semiconductor leaders, has fallen 40% in less than four months, erasing roughly $480 billion in market value. The broad blue-chip index has dropped about 20% from its June highs. The slide has stopped a rally that had run for two years, since promises of economic stimulus sent shares higher, and it has stalled Beijing's attempt to replace its old boom-and-bust pattern with a steadier "slow bull" market. By comparison, US AI stocks have so far suffered only a 6% drawdown in the Nasdaq from a record high reached three weeks ago.
No single event set off the selling. Traders pointed to a mix of high prices, tax bills and the risk that the US or other countries could ban Chinese equipment from data centres. Beijing-based fund manager Dong Baozhen described the arc this way: the market became a "speculative crazy bull," and now the bubble is bursting.
The damage reaches widely because AI stocks account for 42% of China's market capitalisation and 57% of turnover across mainland A-shares and Hong Kong H-shares, according to Goldman Sachs, in a market dominated by small investors. Chipmaker CXMT has lost more than a quarter of its value in the past month. MetaX Integrated Circuits and Moore Threads Technology, which jumped 700% and 400% respectively on their debuts last year, have halved since July. Optical parts makers Zhongji Innolight and Eoptolink Technology are down roughly 60% from their June and July highs, partly because Washington is moving toward barring them from supplying US data centres.
Chen Wensheng, a small business owner and investor from Hainan in the south, said he bought in because he felt official support stood behind names like Unitree, which counted state-backed funds among its investors. He and his friends are now sitting on losses. That frustration, over a theme Beijing had backed ending so badly, has pushed many investors toward defensive assets and is likely to slow equity fundraising by tech firms. Hong Hao, managing partner and chief investment officer at Lotus Asset Management in Hong Kong, said the selloff will halt many companies trying to list.
Valuations leave room for more pain. The STAR50 still trades at around 100 times trailing earnings, down from a peak near 250, against a multiple of 30 for the Nasdaq 100, and investors fear the selloff may worsen before it improves.
The episode runs against the grain of official policy, which has aimed to lift returns and damp volatility by cracking down on leverage and high-frequency trading, with state-backed investors selling into rallies to restrain gains. The China Securities Regulatory Commission did not immediately answer questions sent by fax by Reuters last week. Its chairman, Wu Qing, met market participants earlier this month to hear suggestions on improving capital markets, the regulator said on its website. Some investors say the boom damaged market structure. Leo Wang of Beijing-based Qianchuang Capital argued that weighting indexes heavily toward tech by market value distorts capital behaviour, creating a severe bubble in some sectors and a serious drain on others.
Not everyone is bearish. Some see the selloff as neither surprising nor harmful to long-term reforms that have raised returns, particularly income, in recent years. HSBC research shows Asia funds, though sellers over the past three months, remain overweight China. Goldman Sachs put Innolight and CXMT among dozens of Chinese AI stocks on a revamped recommendation list earlier this month, and BNP Paribas Securities strategist William Bratton has said careful buyers can find opportunities.
On the mainland, though, many are eyeing other sectors or waiting for lower valuations. Shanghai Zhuozhu Investment Management's Wang Zhuo expects chipmakers and AI suppliers to end up in a price war like other Chinese manufacturers. "All bubbles inevitably burst," he said. What to watch next is whether US curbs on Chinese data-centre equipment materialise, and whether valuations fall far enough to bring buyers back.
Citas Notables
All bubbles inevitably burst.— Wang Zhuo, Shanghai Zhuozhu Investment Management
The stock market later evolved into a speculative crazy bull, and now we see the bubble bursting.— Dong Baozhen, Beijing-based fund manager
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