策略周报 A 股估值扩张，钢铁行业领涨 A 股 TTM&全动态估值全景扫描（20260228） 核心结论 本周 A 股总体估值扩张，钢铁行业领涨。今年钢铁冬储累库力度较弱，后续 库存压力较小，节后开工钢铁需求季节性提升，叠加 PPI 回升带来的价格回 升预期较强，而黑色板块位置相对较低，钢铁行业迎来补涨。从估值角度， 当前钢铁行业全动态估值处于历史 45.3%分位数，后续仍存在估值提升空 间。 主板和创业板 PE 扩张，科创板 PE 收缩。算力基建剔除运营商/资源类的相 对估值收缩。算力基建剔除运营商/资源类的相对 PE（TTM）从上周的 3.89 倍降至本周的 3.58 倍，相对 PB（LF）从上周的 4.12 倍降至本周的 3.97 倍。 观察行业绝对估值与相对估值的历史分位数—— （1）从静态的 PE（TTM）角度，大类行业中，可选消费、中游制造、周期 类、大消费、中游材料绝对估值和相对估值均高于历史中位数，其中可选消 费、中游制造绝对估值和相对估值均高于历史 90 分位数，必需消费、服务 业、金融服务相对估值低于历史 10 分位数。 （2）从 PB（LF）角度，大类行业中，大类行业中，资源类、周期类、 ...

Core Conclusions - The overall valuation of A-shares has contracted this week, with the banking sector leading the gains. The previous dominance of the technology growth sector led to a continuous outflow of funds from the banking sector, resulting in a significant correction. Currently, the banking sector, which has defensive attributes, is experiencing a recovery phase. The overall PB (LF) of the banking industry is at the historical 22.8 percentile, indicating substantial room for recovery [1][8]. Valuation Overview - The overall PE (TTM) of A-shares decreased from 22.47 times last week to 22.00 times this week, while the PB (LF) fell from 1.81 times to 1.77 times [10]. - The overall dynamic PE of key A-share companies dropped from 15.19 times to 14.93 times [14]. A-Share Valuation Details - The PE (TTM) of the main board decreased from 17.90 times to 17.71 times, and the PB (LF) fell from 1.51 times to 1.49 times [17][18]. - The PE (TTM) of the ChiNext board decreased from 97.70 times to 75.51 times, and the PB (LF) dropped from 4.38 times to 4.15 times [19][20]. - The PE (TTM) of the Sci-Tech Innovation board decreased from 258.35 times to 246.87 times, and the PB (LF) fell from 5.46 times to 5.14 times [21][22]. Relative Valuation Expansion - The relative PE (TTM) of computing power infrastructure, excluding operators/resources, decreased from 5.41 times to 5.09 times, and the relative PB (LF) fell from 5.04 times to 4.74 times [23][25]. Industry Valuation Levels - From a static PE (TTM) perspective, industries such as consumer discretionary, midstream manufacturing, consumer staples, cyclical, and midstream materials have absolute and relative valuations above the historical median, with consumer discretionary and midstream manufacturing exceeding the historical 90th percentile. Conversely, resource and essential consumer sectors have absolute and relative valuations below the historical median, with services and essential consumer sectors below the historical 10th percentile [27][28]. - In terms of PB (LF), resource, TMT, and cyclical industries have absolute and relative valuations above the historical median, while midstream materials, financial services, services, consumer staples, and essential consumer sectors have absolute and relative valuations below the historical median, with essential consumer sectors below the historical 10th percentile [28]. Dynamic Valuation Analysis - From a dynamic PE perspective, industries such as consumer discretionary, midstream manufacturing, and cyclical sectors have absolute and relative valuations above the historical median, with consumer discretionary exceeding the historical 90th percentile. Essential consumer sectors have both absolute and relative valuations below the historical median, with essential consumer relative valuations below the historical 10th percentile [36]. Comparative Analysis of Odds and Winning Rates - Industries such as oil and petrochemicals, agriculture, forestry, animal husbandry, fishery, telecommunications, and public utilities exhibit characteristics of low valuation and high profitability [58]. - Industries like building materials, electrical equipment, basic chemicals, and media show both low valuations and high performance growth [62]. ERP and Equity-Debt Yield Spread - The non-financial ERP of A-shares increased from 0.81% last week to 0.92% this week, while the equity-debt yield spread improved from -0.21% to -0.06% [63]. - The dynamic ERP of key non-financial A-share companies rose from 2.77% to 2.96% [68].