On June 30, 2026, during the midday break, the three major A-share indices experienced a collective upswing. The Shanghai Composite Index climbed by 0.2%, reaching 4,082.13 points, while the Shenzhen Component Index surged by 2.47%, closing at 16,202.9 points. The ChiNext Index followed suit with a 3.06% increase, hitting 4,345.84 points, and the STAR 50 Index soared by 3.51%, settling at 2,200.53 points. In the morning trading session, the combined trading volume in the Shanghai and Shenzhen markets soared to 2.1 trillion yuan, with over 2,700 stocks advancing and more than 100 stocks reaching their daily limit. On the market front, the semiconductor and optical module sectors witnessed a significant rally. Changguang Huaxin, Yuanjie Technology, and Shenghong Technology all soared by over 10%. Eoptolink Technology wasn't far behind, with a gain exceeding 9%, and Cambricon surged by over 8%, propelling its market capitalization past the 1 trillion yuan mark. In contrast, the coal and shipping sectors were notable laggards, with COSCO Specialized Carriers and China Coal Energy both declining by over 5%, and COSCO Shipping Energy dropping by over 4%.