A股午评：三大指数集体下跌，沪指跌0.24%创业板指跌1.58%北证50跌1.15%，光伏设备板块领跌，农业银行创新高！超4000股下跌，成交额12702亿放量22亿

Group 1 - The three major A-share indices collectively adjusted in the morning session, with the Shanghai Composite Index down 0.24% to 3993.35 points, the Shenzhen Component Index down 1.07%, and the ChiNext Index down 1.58% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 12,702 billion yuan, an increase of 22 billion yuan compared to the previous day, with over 4,000 stocks declining across the market [1] Group 2 - The oil and gas extraction and service, insurance, and pharmaceutical commercial sectors showed the highest gains, while bank stocks strengthened, with Agricultural Bank's total market value surpassing 3 trillion yuan [3] - The cultivated diamond, photovoltaic equipment, and controllable nuclear fusion sectors collectively declined [3]