A股冲高回落，高位股集体下挫

Market Overview - A-shares experienced a pullback after an initial rise, with the Shenzhen Component and Shanghai Composite indices turning negative, while the ChiNext index briefly rose over 1% [1] - The market showed significant divergence, with small and mid-cap stocks declining, and the micro-cap index dropping over 2% [1] - The total trading volume in the Shanghai and Shenzhen markets was 1.11 trillion yuan, a decrease of 176.7 billion yuan compared to the previous trading day [1] Sector Performance - The military industry sector was notably active, with stocks like Yaxing Anchor Chain and Yaguang Technology hitting the daily limit [3] - The banking sector strengthened, with China Bank rising nearly 3% to reach a historical high [3] - The chemical sector saw a midday surge, with stocks such as Hengguang Co. and Lanfeng Biochemical also hitting the daily limit [3] - Conversely, high-priced stocks showed renewed divergence, with Sanmu Group, Victory Shares, and Hainan Haiyao hitting the daily limit down [3] - The coal sector weakened, with Dayou Energy reaching the daily limit down [3] - Overall, military, insurance, and banking sectors led in gains, while sectors like Hainan, gas, and film and television saw the largest declines [3] - At market close, the Shanghai Composite index fell by 0.04%, the Shenzhen Component dropped by 0.32%, while the ChiNext index increased by 0.12% [3]