Jason HsuBrendan AhernVey-Sern LingBenjamin CavenderTai HuiRayliant Global AdvisorsDeepSeekASML Holding NVKraneSharesJPMorgan Asset ManagementCATLChina Market Research GroupUnion Bancaire Privée

China's tech darlings lose their shine as sell-off deepens; STAR Market index plunges over 40% from July peak on AI return concerns

China's STAR Market index has plunged over 40% since July, driven by concerns over AI investment returns and a broader tech sell-off. Major firms, including battery giant CATL, face pressure as investors question profitability amid a challenging economic landscape marked by weak consumption and a property downturn.

Bloomberg.com Bloomberg.com+1 source29 October 2026 · 06:42 UTC
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China's STAR Market index has seen a dramatic decline of over 40% since its peak in July, reflecting growing investor skepticism about the profitability of AI investments.1

The index, which tracks 50 major tech firms, has been particularly affected by concerns regarding the returns on AI spending.37

"I think the sell-off primarily started as a valuation correction and some profit taking, but now there is a critical look happening at whether earnings can justify the AI excitement," said Benjamin Cavender of China Market Research Group.

Major players like CATL, despite posting a 59% revenue growth in the third quarter, have seen their stock prices pressured, with net profit rising only about 15%.2

The broader economic context is troubling, as China's prolonged property downturn has diminished household confidence, while weak consumption continues to impact advertising and e-commerce sectors.

Tai Hui, Asia-Pacific chief market strategist at JPMorgan Asset Management, noted that investors are eager to see how tech giants will convert their AI investments into earnings, especially after initial public offerings attracted strong demand but later lost momentum.

Vey-Sern Ling, senior equity advisor at Union Bancaire Privée, warned that rising AI investments could further pressure near-term earnings, with long-term monetization prospects remaining uncertain.

Overall, while Chinese tech stock valuations have reached multi-year lows, limiting downside risk, the path to recovery remains unclear.4

Key Insight
“The sell-off began as a valuation correction and profit-taking, but now investors are critically examining whether earnings can justify AI excitement, said Benjamin Cavender of China Market Research Group. CATL, a battery giant, has fallen 37% since the start of the year, with its third-quarter revenue up 59% but net profit only 15%.”
CuriousCats studied:
1
Bloomberg.comBloomberg.com
“An unmistakable shots-fired moment in the US-China tech war arrived in early 2024 — via the Netherlands.”
Bloomberg.com →
2
CNBCCNBC
“The plunged over 40% from its July peak as concerns mount over returns on AI investments.”
CNBC →
Ask CuriousCats
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