On August 19, 2026, stock index futures experienced a broad-based decline, with the CSI 300 Index Futures (IF) main contract falling 2.38%, the SSE 50 Index Futures (IH) main contract dropping 1.42%, the CSI 500 Index Futures (IC) main contract sliding 3.78%, and the CSI 1000 Index Futures (IM) main contract plunging 4.26%.

All three major A-share indices closed lower on the day. The Shanghai Composite Index fell 2.4%, the Shenzhen Component Index dropped 5.01%, and the ChiNext Index declined 6.26%. Additionally, the Beijing Stock Exchange 50 Index retreated 4.89%, while the STAR 50 Index tumbled 6.89%. Total market turnover reached 2.53 trillion yuan, up 110.2 billion yuan from the previous trading day, with more than 5,000 stocks declining across the market.

Where the market found support

By sector, gains were seen in kitchen and bathroom appliances, banking, coal mining and processing, and port shipping. On the flip side, the MLCC concept, electronic chemicals, CPO, components, and semiconductor sectors led the losses.

In terms of trading activity, the kitchen and bathroom appliances sector strengthened with a volatile upward trend. Entive Smart, Wanhe Electric, and Risun Group hit their daily price limits, while Robam Appliances, Vatti, and Aupu Technology followed with gains. The coal mining and processing sector was also active, with Baotailong, Shaanxi Heimao, Meijin Energy, and Dayou Energy all hitting their limit-up boards, while Zhengzhou Coal, Antai Group, and Liaoning Energy led the advances.

Where the selling pressure was heaviest

The electronic chemicals sector continued its downward slide, with Haixing Shares, TianTong, and Honghe Technology hitting their limit-down prices, while Wetown, Fangbang, Lair Tech, Sinocera, and Zhongshi Tech all fell by more than 10%. The humanoid robot sector suffered a severe rout, with Shangwei New Materials hitting a 20cm limit-down, while Jiangsu Beiren, Fengguang Precision, Leader Harmonious, and Haozhi Electromechanical all dropped over 15%. The semiconductor sector also fell sharply, with VeriSilicon, Chipown, Everlight, Hua Hong, and Jiehuate all losing more than 10%.