Shanghai Composite Falls 1.33% on Oct 27, 2026 as Chip Stocks Slide

Key takeaways

• The Shanghai Composite fell 49.22 points, or 1.33%, to 3,648.30 on Tuesday, October 27, 2026, closing at its low of the day as chipmakers and AI hardware shares led losses, according to Yahoo Finance data and Trading Economics.
• Growth boards fared worse: the Shenzhen Component dropped 2.50% to 11,245.73 and the ChiNext index slid 3.41% to 2,548.15. The blue-chip CSI 300 lost 1.32% to 4,049.55.
• In Hong Kong, the Hang Seng Index fell 170.49 points, or 0.73%, to 23,041.32, and the Hang Seng Tech Index dropped 1.48% to 3,800.43, per Yahoo Finance.
• China's industrial profits rose 14.4% year on year in September, up from 4.2% in August, investingLive reported from official data, but the figures did not lift sentiment.
• The People's Bank of China (PBOC) set the yuan midpoint at 6.7171 per dollar, 9 pips weaker than Monday's 6.7162, according to CFETS data reported by China News Service.

Session recap

China and Hong Kong stocks fell together on Tuesday. Mainland shares gave up small morning gains and sold off through the afternoon, while Hong Kong ended a two-session winning streak. For the wider picture, see Asian and global markets today. The drop reversed Monday's mixed session described in our October 26 China & Hong Kong brief, and it came as much of Asia rallied; Japan's benchmark, for example, climbed on chip and AI optimism, as covered in our Nikkei report.

Changes are calculated from Monday's closes: Shanghai 3,697.52, Shenzhen 11,534.38, ChiNext 2,638.23, CSI 300 4,103.54, Hang Seng 23,211.81 and Hang Seng Tech 3,857.53 (Yahoo Finance). A higher midpoint means a weaker yuan fixing. A full-day Stock Connect southbound figure for October 27 was not available from a verifiable source at the time of writing.

The Shanghai Composite traded between 3,708.20 and 3,648.30, so it finished at the bottom of its range, according to Yahoo Finance. At the midday break the picture was calmer: the Shanghai Composite was down 0.1% at 3,692 and the Shenzhen Component down 0.3%, The Standard reported. The Hang Seng was down only 31 points at noon on half-day turnover of HK$88 billion, the paper said, before losses widened in the afternoon. Its intraday range was 22,983.99 to 23,313.92, per Yahoo Finance.

What drove it

Chip and AI hardware stocks extended their slide

Technology shares led the decline again. Chipmakers and AI-linked hardware firms, including Cambricon, Hygon, NAURA and SMIC, posted some of the steepest losses, according to Trading Economics. That helps explain why the tech-heavy ChiNext and Shenzhen Component fell roughly twice as hard as the Shanghai Composite, which has larger weights in banks and state-owned companies. The weakness came even as Anthropic's expected US listing lifted risk appetite in other markets, Trading Economics said.

Strong profit data failed to help

Profits at China's large industrial firms rose 14.4% from a year earlier in September, rebounding from 4.2% growth in August, investingLive reported, citing the National Bureau of Statistics. For January to September, profits rose 15.5% to about CNY 6.03 trillion, slightly slower than the 15.7% pace for the first eight months, according to Trading Economics. investingLive noted that computers and communications equipment were a major source of growth, which ties the profit rebound to the same AI hardware cycle that investors were selling on Tuesday.

Hong Kong: broad losses beyond tech

In Hong Kong, healthcare, consumer and manufacturing shares weighed on the index, according to Trading Economics. It listed Duality Biotherapeutics (−21.9%), Xiaomi (−2.3%), Meituan (−1.5%), Akeso (−1.4%) and Wuxi Biologics (−1.1%) among the largest decliners. Trading Economics also pointed to lingering doubts over returns on heavy AI spending. HSBC, a heavyweight in the Hang Seng, reported a 26.6% rise in nine-month pre-tax profit to US$18.78 billion, The Standard reported.

Bear-market backdrop

Sentiment toward Chinese equities remains fragile. investingLive described onshore Chinese stocks as being in a bear market and cited a Morgan Stanley warning that offshore Chinese shares could fall a further 10% to 15%. Weak labour-market data add to the caution; see our report on China's youth unemployment in September.

Currency

The onshore yuan was largely flat at 6.6684 per dollar on Tuesday, near a four-year high, Reuters reported via Business Recorder. The PBOC's 6.7171 midpoint was 440 pips weaker than the Reuters estimate, the report said. "I think the PBOC are fairly happy with where they're seeing the currency," said Chris Weston, head of research at Pepperstone, according to Reuters. He expects one or two weeks of tight-range trading in the dollar-yuan pair. The yuan is up 0.5% this month and 4.9% this year, the report said.

Political & policy watch

• Fifth plenum: The Communist Party's Central Committee is meeting in Beijing from October 26 to 29, Reuters reported in September. The session centres on "full and rigorous party self-governance," and investors are watching for signals on economic priorities, according to Trading Economics. No economic communiqué had been released by Tuesday's close.
• Support for non-bank lenders: The PBOC plans a swap facility to provide emergency liquidity to non-bank financial institutions facing large redemptions, Trading Economics reported.
• Exchange-rate management: Tuesday's fixing was set 440 pips weaker than the Reuters estimate while spot traded near a four-year high, according to Reuters via Business Recorder. The fixing sets the centre of the yuan's daily trading band.
• Company support: Thirteen STAR 50 index companies are carrying out share buybacks with a combined ceiling of about CNY 5.08 billion, according to a Jin10 market roundup republished by KuCoin, citing Yicai.

What to watch next

• October 27–28: US Federal Reserve policy meeting (Federal Reserve calendar). Hong Kong's currency peg ties local interest rates closely to Fed decisions.
• October 29: scheduled final day of the Communist Party's fifth plenum; a closing communiqué usually follows.
• October 31, 01:30 UTC: China's official October PMIs (NBS release calendar).
• November 9, 01:30 UTC: China's October CPI and PPI (NBS).
• November 27, 01:30 UTC: next monthly industrial economic benefits report, which covers industrial profits (NBS).

Risk checklist for readers

• Index composition matters. ChiNext and the Shenzhen Component carry more tech weight, so they can move far more than the Shanghai Composite on the same day.
• Data versus price. Strong economic data does not always lift stocks; markets may already expect it or focus on other risks.
• Policy meetings. Plenum communiqués are often general, and markets may react to wording rather than concrete measures.
• Currency effects. The onshore yuan may trade up to 2% either side of the PBOC midpoint, and exchange-rate moves change returns for overseas investors.
• Single-stock swings. Large one-day drops in individual names, such as biotech shares, can move sector indices sharply.
• Check final figures. Vendor data can differ slightly; exchange and index-provider releases are the reference for final values.

This article is for information only and is not investment advice.