A股TTM、全动态估值全景扫描（20251213）：A股估值扩张，通信行业领涨

Core Conclusions - The overall valuation of A-shares has contracted this week, with the communication industry leading the gains. The U.S. has allowed Nvidia to export H200 chips to China, which is expected to drive incremental demand for communication equipment. The domestic GPU leader, Moore Threads, has gone public, boosting sentiment in the computing power sector. Currently, the overall dynamic PE of the communication industry is at the historical 36.6% percentile, while the communication equipment sector's dynamic PE is at the historical 97.9% percentile, indicating high profit growth expectations [1][8][10]. A-share Valuation Overview - The overall PE (TTM) of A-shares decreased from 22.14 times last week to 21.74 times this week, while the PB (LF) fell from 2.15 times to 1.77 times [10][12]. - The PE (TTM) of the ChiNext board decreased from 79.84 times to 72.27 times, and the PB (LF) dropped from 4.74 times to 4.27 times [18][20]. - The PE (TTM) of the Sci-Tech Innovation Board decreased from 255.36 times to 210.87 times, and the PB (LF) fell from 6.29 times to 5.17 times [22][24]. Relative Valuation Expansion in Computing Power Infrastructure - The relative PE (TTM) of computing power infrastructure, excluding operators and resource sectors, increased from 4.24 times last week to 4.47 times this week, while the relative PB (LF) rose from 4.42 times to 4.66 times [24][26]. Major Sector Valuation Levels - From a static PE (TTM) perspective, sectors such as consumer discretionary, consumer staples, midstream manufacturing, cyclical, and midstream materials have absolute and relative valuations above the historical median, with consumer discretionary, consumer staples, and midstream manufacturing exceeding the historical 90th percentile. Conversely, essential consumer sectors have absolute and relative valuations below the historical median, with financial services, essential consumer, and services sectors below the historical 10th percentile [28][29]. - In terms of PB (LF), resource, TMT, cyclical, and midstream manufacturing sectors have absolute and relative valuations above the historical median, while consumer discretionary, midstream materials, financial services, services, consumer staples, and essential consumer sectors have absolute and relative valuations below the historical median, with consumer staples and essential consumer sectors below the historical 10th percentile [28][29]. Industry Performance and Profitability - Current industries such as agriculture, public utilities, and oil and petrochemicals exhibit characteristics of low valuation and high profitability [54]. - Industries like building materials, power equipment, media, defense, and basic chemicals show both low valuations and high performance growth [57]. ERP and Equity-Debt Yield Spread - The non-financial ERP of A-shares increased from 0.83% last week to 0.87% this week, while the equity-debt yield spread improved from -0.15% to -0.12% [58][62].