A股震荡走强，沪指半日微涨0.08%

Market Overview - The A-share market showed slight gains with the Shanghai Composite Index up by 0.08% to 3382.96 points, while the Shenzhen Component increased by 0.5% and the ChiNext Index rose by 0.48% [1][2] - The total trading volume for A-shares reached 661.11 billion yuan during the half-day session [1] Monetary Policy - The People's Bank of China conducted a reverse repurchase operation of 142.5 billion yuan for 7-day terms at a fixed rate of 1.4%, with a net injection of 36 billion yuan for the day after considering maturing reverse repos [2] E-commerce and Digital Consumption - In the first four months of the year, China's e-commerce sector has enhanced the integration of domestic and foreign trade, with online sales of digital products increasing by 8.4%. Notably, sales of smart robots and smart home systems surged by 87.6% and 16%, respectively [3] Company Developments - China Petroleum & Chemical Corporation (Sinopec) announced its investment in Contemporary Amperex Technology Co., Ltd. (CATL) as a cornerstone investor, which is part of a broader strategy to enhance infrastructure for battery swapping stations [3] - Zhongzhou Special Materials is experiencing strong demand due to increased capital expenditure in the oil and gas sector, with expansion into new energy and nuclear power applications [8] - Aike Cyber is focusing on semiconductor power supply technologies, achieving competitive performance metrics compared to leading international brands [8] - Guoguang Electric is expanding into the civil market for pressure vessel measurement and control components, driven by technological innovation and domestic substitution trends [8] - Xuguang Electronics is making strides in high-end technology sectors, achieving breakthroughs in critical technologies and domestic replacements [8] Sector Performance - The healthcare sector saw significant gains, with companies like Yong'an Pharmaceutical and Beirui Gene experiencing rapid stock price increases [3] - The controlled nuclear fusion sector led the market with an average increase of 3.35%, while shipping concepts lagged with a decline of 1.02% [4]