估值周观察（3月第2期）：人工智能、军工集团估值再扩张

Global Market Overview - The global market experienced mixed performance in the past week (March 3-7, 2025), with the US market indices generally declining and broad indices seeing overall valuation contraction, while major indices in Asia-Pacific and Europe mostly rose, indicating valuation expansion [3][10] - The Nasdaq index, Nasdaq 100, and Dow Jones Industrial Average saw significant valuation contractions, with PE ratios decreasing by 1.56x, 1.24x, and 1.11x respectively compared to February 28, 2025 [3][10] A-share Market Valuation - The core broad valuation of A-shares expanded overall, with significant growth in small-cap growth valuations. The PE expansion for the National Index 2000, CSI 1000, and CSI 500 reached 1.70x, 1.29x, and 0.63x respectively [3][19] - As of March 7, 2025, the overall valuation levels of major A-share indices over the past year showed significant expansion, with PE, PB, and PS ratios mostly above the 80th percentile, while PCF ratios were between the 35th and 65th percentiles over the last three years [3][22] Industry and Sector Valuation - The TMT (Technology, Media, and Telecommunications) sector saw valuation increases, with the computer industry rising by 6.74% and the defense and military industry experiencing the largest increase of 6.96% [3][37] - The PE expansion in the TMT sector was notable, with the computer industry seeing a PE increase of 5.17x, while the support services sector experienced valuation contraction [3][37] Emerging Industries - In emerging industries, valuations for artificial intelligence and military groups expanded significantly, with the cloud computing sector showing the largest increase of 6.03% in stock prices, leading to overall valuation expansion [3][3] - The PE expansion for cloud computing, semiconductor, and integrated circuit sectors reached 7.76x, 5.95x, and 3.58x respectively, while the Kimi index saw a PE expansion of 9.69x and the top ten military group index expanded by 5.56x [3][3]