市场分析：军工半导体行业领涨 A股小幅震荡

A股市场走势综述 - On October 21, the A-share market experienced slight fluctuations after a high opening, with the index facing resistance around 3300 points, leading to a decline in the afternoon [6][11] - The military, semiconductor, software development, and gaming sectors performed well, while the securities, banking, real estate, and automotive sectors showed weaker performance [3][6] - The Shanghai Composite Index closed at 3268.11 points, up 0.20%, while the Shenzhen Component Index rose by 1.09% to 10,470.91 points [7][11] 后市研判及投资建议 - The average price-to-earnings ratios for the Shanghai Composite and ChiNext indices are currently at 13.67 times and 33.57 times, respectively, which are at the median levels over the past three years, indicating a suitable environment for medium to long-term investments [3][11] - The total trading volume on October 21 was 22,294 billion yuan, above the median of the past three years, suggesting a healthy market activity [3][11] - The report highlights potential investment opportunities in sectors such as new energy, semiconductors, software development, military, and gaming, as the market is expected to maintain an upward trend amid ongoing macroeconomic adjustments and growth-promoting policies [3][11]