STAR50 Index Falls 40%: China AI Stocks Lose $480B

China's STAR50 index of AI and chip companies has lost 40% since June, erasing about $480 billion and ending the country's policy-driven technology rally.

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China's STAR50 index, the Shanghai benchmark of the country's largest AI and semiconductor companies, has fallen about 40% since June. That is roughly $480 billion of market value gone in under four months. On October 27, Cambricon Technologies (688256) fell about 5.7%, while Hygon Information Technology (688041) and NAURA Technology (002371) each lost about 5.5%. SMIC (688981) dropped about 2.7%.

The slide has pulled down the broader market. The CSI 300 sits more than 20% below its June peak and touched bear-market territory intraday on October 22. The ChiNext board of growth companies is down roughly 36% over the period. Chinese equities as a whole have shed about $2.4 trillion since May.

What Happened to the STAR50 Index?

The STAR50 fell in a steady slide, with no single trigger, after a rally that left prices well ahead of earnings. The index tracks the 50 largest companies on Shanghai's STAR Market, which is dominated by chip designers, equipment makers and AI hardware suppliers.

Recent listings have fallen furthest. Unitree, a leading humanoid robot maker, drew subscriptions 8,000 times its IPO allocation and surged about 460% on its August debut. Its shares have since lost roughly half their value. ChangXin Memory Technologies (CXMT) has dropped more than 25% in the month since its July listing. Chip designers MetaX Integrated Circuits and Moore Threads Technology have roughly halved. Optical-module makers Zhongji Innolight and Eoptolink Technology each trade about 60% below their summer highs.

Why Did China's AI Stocks Fall So Far?

Prices had outrun earnings, and several pressures then hit at once. The first was valuation. At its peak the STAR50 traded near 250 times trailing earnings. Even after the drop it stands near 100 times, against about 30 times for the Nasdaq 100.

The second was profits. Weak consumer demand and reluctant corporate spending have left margins below expectations, despite heavy government subsidies. Investors now question whether state-backed industries can find paying customers at the pace their valuations assumed.

The third was trade policy. The United States has banned Chinese humanoid robots on national security grounds and is weighing limits on Chinese components in data centers. That raises the risk that Chinese hardware loses access to overseas buyers. Higher U.S. interest rates and tax- and cash-related selling by domestic holders added to the pressure.

The market's concentration magnified the damage. Goldman Sachs estimates that AI stocks account for about 42% of the combined market value of mainland China and Hong Kong, and about 57% of turnover. A fall in that group moves the whole market. The STAR50 is down about 40%, while other major Chinese indexes are down roughly 20%.

Can State Funds Stabilize the Market?

State money has begun to flow in, but its scale is small next to the losses. A 60 billion yuan (about $9 billion) state-backed AI investment fund started deploying capital in October. That is under 2% of the value erased from the STAR50.

Authorities have also tightened rules on overseas investment by Chinese residents, with additional restrictions taking effect December 1. The measures aim to keep domestic savings in domestic equities. Past support campaigns, including the 2015 rescue and the 2024 stimulus rally, lifted prices for weeks but did not change the earnings outlook for the companies involved.

Strategic Context

The selloff tests Beijing's strategy of building domestic AI and semiconductor capacity through subsidies, cheap capital and favorable listings. Cambricon, Hygon and SMIC are the core of that effort, supplying processors and manufacturing capacity that substitute for restricted U.S. technology.

Retail and institutional investors bid these companies up on the expectation that import restrictions guaranteed demand. The slide shows that protected demand does not guarantee profit. Chinese AI developers have also shown they can train models efficiently on limited hardware, which weakens the case for unlimited spending on chips. No major new technology listings are scheduled in China to rebuild sentiment, which removes a source of fresh capital for the sector.

What Comes Next for Chinese Chip Stocks?

Over the next three to twelve months, earnings will decide the outcome. Third-quarter results from Cambricon, Hygon, NAURA and other large STAR names will show whether revenue growth can justify even the compressed 100-times multiple. A clear profit miss would test the index's recent lows. Evidence of orders from domestic cloud providers and telecom operators would support a base.

Policy is the second variable. Additional state funds, looser listing rules or relief from U.S. restrictions would help prices. A wider U.S. ban on Chinese data center equipment would hurt the export revenue of the sector's largest names. Tax-related selling and thin liquidity in recently listed shares could keep volatility high into year-end.

Outlook

The STAR50's 40% decline has ended China's AI and chip rally. The index remains expensive by global standards, domestic demand is soft and U.S. restrictions are tightening. State funds are in the market, but their size is modest next to $480 billion in lost value. Corporate earnings and the trajectory of U.S.-China technology controls will set the path from here.