午评：沪指探底回升半日微涨，海南自贸区、电网设备板块集体爆发

Market Overview - The three major indices showed mixed performance in early trading, with the Shanghai Composite Index up 0.05%, the Shenzhen Component down 0.15%, and the ChiNext Index up 0.17% [1] - The total trading volume in the Shanghai, Shenzhen, and Beijing markets reached 1.1497 trillion yuan, a decrease of 81.4 billion yuan compared to the previous day [1] - Over 3,000 stocks in the market experienced gains [1] Sector Performance - The Hainan Free Trade Zone, electric grid equipment, airport and shipping, tourism and hotels, and food and beverage sectors saw the largest gains [1] - The semiconductor, quantum technology, and gaming sectors experienced the most significant declines [1] Notable Stocks - The Hainan Free Trade Zone sector showed strong performance, with Haima Automobile achieving four consecutive trading limit-ups, and companies like Caesar Travel, Hainan Development, and Intercontinental Oil & Gas hitting the daily limit [1] - The electric grid equipment sector also saw a collective surge, with Zhongneng Electric achieving two consecutive limit-ups, and nearly ten stocks including New Energy Taishan and Sun Cable hitting the daily limit [1] - Other sectors such as batteries and retail showed intraday fluctuations [1] - Conversely, the storage chip sector faced adjustments, with stocks like Fudan Microelectronics, Yunhan Chip City, and Zhaoyi Innovation declining [1] - Quantum technology concept stocks also retreated, with Keda Guokuan, Fujida, and Guodun Quantum experiencing declines [1]