On May 11, the A-share market exhibited a bullish trend right from the opening bell, maintaining its upward trajectory throughout the morning trading session. The Shanghai Composite Index registered a 0.94% increase, surpassing the 4,200-point threshold. Meanwhile, the Shenzhen Component Index advanced by 2.13%, the ChiNext Index soared by 3.03%, and the STAR 50 Index witnessed an impressive surge of over 5%, setting a new record high. Trading activity on the Shanghai and Shenzhen stock exchanges was brisk, with turnover reaching 2.31 trillion yuan in the morning session, marking an increase of 339.4 billion yuan from the previous period.

In terms of market performance, the memory chip sector emerged as a standout performer, with stocks such as Puyuan Semiconductor, Changchuan Technology, and Shenkeda all hitting their maximum daily price increase limits. The CPO (Co-packaged Optics) concept also demonstrated strong momentum, with companies like Hongban Technology, Woge Optoelectronics, and Changdian Technology similarly reaching their daily limits. The semiconductor, rare earth, component, photovoltaic equipment, construction machinery, and minor metals sectors were among the top performers, experiencing significant gains. Conversely, the shipping ports, aviation and airports, precious metals, and tourism and hotel sectors faced notable declines. Overall, nearly 3,000 stocks across the market posted gains during the session.