Shares in Chinese tech giant Baidu tumbled on Friday, 18 July 2026, after the company reported weaker-than-expected revenue from its artificial intelligence division for the second quarter. The stock fell as much as 8.2% in Hong Kong trading, its steepest single-day decline in over a year, before closing down 6.7%. The drop came after Baidu's management told investors that AI cloud revenue growth had slowed to 12% year-on-year, well below the 20% analysts had forecast.
The disappointing numbers have reignited concerns about the pace of AI monetisation in China, where Baidu has positioned itself as a leader with its Ernie Bot platform. Analysts at Citi noted in a research note that 'the path to meaningful AI-driven profitability in China remains longer than many hoped,' adding that Baidu's advertising business also faced headwinds from a sluggish consumer recovery. The broader Hang Seng Tech Index fell 2.3% on the day, while the CSI 300 lost 1.1%.
For UK investors, the ripple effects were felt through exchange-traded funds (ETFs) tracking Chinese equities. The iShares China Large-Cap ETF, popular among British retail investors, dropped 1.8% in London trading. The FTSE 100 was largely unaffected, though technology and mining stocks with China exposure, such as ASML and Rio Tinto, saw modest declines of 0.4% to 0.6%.
Baidu's struggles come at a time when UK pension funds have increased allocations to emerging market equities, including China, as part of diversification strategies. According to data from the Pensions and Lifetime Savings Association, around 6% of UK defined contribution pension assets are now invested in Chinese stocks, either directly or through funds. The sell-off serves as a reminder of the volatility inherent in those markets.
Market commentators pointed out that Baidu's AI revenue miss could signal broader challenges for the sector. 'If the poster child of Chinese AI is struggling to convert hype into cash, it raises questions for the entire ecosystem,' said a senior analyst at Bernstein, who asked not to be named. The company's shares are now down 18% year-to-date, underperforming the Hang Seng Index, which has fallen 4% over the same period.