CSI 300 Index

Mainland Chinese shares surged as the CSI 300 index rose 3.1% and the Star 50 Index jumped 11% due to regulatory support and state investor purchases following discussions led by CSRC chairman Wu Qing.

Chinese stocks, including the CSI 300 and Star Market 50 indices, rose by 0.4% as state-backed insurers like Ping An Insurance Group and People’s Insurance Group of China promoted long-term investment values. Hong Kong’s Hang Seng Index also increased by 0.3%.

Mainland China’s stock markets are aligning with US markets in tech stock concentration, with technology stocks now representing 27% of the CSI 300 Index—double the weight from a year ago and the largest sector in the benchmark.

The Hang Seng Index briefly fell below 23,000 for the first time in a year as technology stocks led a decline, with Alibaba Group Holding dropping 4.2%. The index reached a low of 22,992.62 but later traded at 23,024.69, while the mainland's CSI 300 Index rose 1.56%.

Hong Kong stocks rebounded on Wednesday with the Hang Seng Index and Hang Seng Tech Index rising 0.6% and 1% respectively, contrasting with US stock market declines driven by concerns over technology company valuations and leveraged bets on South Korean chipmakers. Mainland China’s CSI 300 Index fell 0.1%.

Hong Kong stocks rose after the US announced a deal with Iran to reopen the Strait of Hormuz, lifting a naval blockade and triggering a 'risk-on' market environment. The Hang Seng Index and Hang Seng Tech Index increased, alongside gains in mainland and Asian markets.

Asia-Pacific shares fell to a three-week low as concerns over an AI bubble and renewed US strikes on Iran caused market declines. Hong Kong's Hang Seng Index dropped 0.7%, while China's CSI 300 Index fell 0.6%, contrasting with a 0.4% rise in South Korea's Kospi.

Hong Kong stocks declined alongside Asian markets as rising expectations of a US interest-rate increase following a strong jobs report triggered fears of capital outflows and the unwinding of AI-driven rallies in China and South Korea. The Hang Seng Index dropped 1.8%, the Hang Seng Tech Index fell 3.1%, the CSI 300 Index slid 1.9%, and the Star Market 50 Index retreated 4.2%.

Zhongji Innolight, a supplier of optical modules to US hyperscalers, became the largest constituent of China’s CSI 300 benchmark with a 5% weighting, driven by the AI hyperscaler effect. The company is based in Shandong province and highlights AI’s growing influence on China’s equity market.

Zhongji Innolight, a Chinese supplier of optical modules to US hyperscalers, became the largest constituent of China’s CSI 300 benchmark due to AI-driven market growth. The company’s 5% weighting in the index highlights AI’s growing influence on China’s equity markets.