午评：沪指半日涨0.12% 贵金属板块涨幅居前

Core Viewpoint - The A-share market showed mixed performance with the Shanghai Composite Index slightly up by 0.12%, while the Shenzhen Component and ChiNext indices fell by 0.74% and 0.86% respectively [1] Market Performance - As of the midday close, the Shanghai Composite Index stood at 4141.01 points, the Shenzhen Component at 14332.86 points, and the ChiNext at 3320.81 points [1] - The top-performing sectors included precious metals, oil and gas extraction and services, and industrial metals, while sectors such as military electronics, military equipment, and gaming experienced significant declines [1] Sector Performance Rankings - The top sectors by percentage increase included: - Audio and video equipment: +9.31% with a total trading volume of 925.58 million hands and a net inflow of 270.28 million [2] - Oil and gas extraction and services: +4.73% with a trading volume of 2098.10 million hands and a net inflow of 146.91 million [2] - Industrial metals: +4.02% with a trading volume of 6526.45 million hands and a net inflow of 1002.47 million [2] - The sectors with the largest declines included: - Military electronics: -4.63% with a trading volume of 1899.58 million hands and a net outflow of 74.76 million [2] - Military equipment: -2.95% with a trading volume of 2273.68 million hands and a net outflow of 83.28 million [2] - Gaming: -2.74% with a trading volume of 926.31 million hands and a net outflow of 22.32 million [2]