信用周报：超长期限行情如何追？-20251028

1. Report Industry Investment Rating No relevant content provided. 2. Core View of the Report - Last week, the trends of interest - rate bonds and credit bonds diverged. Interest - rate bonds adjusted slightly, while credit bonds showed strong resilience and continued to recover, with ultra - long - term varieties having the highest repair degree [3][10][27]. - The market of Tier 2 capital bonds (Two - tier bonds) weakened, and the repair degree of the ultra - long - term part was weaker than that of other ultra - long - term credit bonds [4][17]. - The start of the ultra - long - term credit bond market was not driven by major non - bank institutions such as funds, wealth management, and insurance, so the sustainability of the market may not be stable. It is recommended that institutions with unstable liability ends avoid chasing the rise of ultra - long - term credit bonds. Instead, it is advisable to focus on short - and medium - term coupon sinking strategies [5][26][27]. 3. Summary by Related Catalogs 3.1 Market Performance of Interest - rate Bonds and Credit Bonds - From October 20 to October 24, 2025, the yields of 1Y, 2Y, 3Y, 4Y, and 5Y treasury bonds increased by 2.8BP, decreased by 0.2BP, increased by 1.5BP, increased by 2.2BP, and increased by 2.7BP respectively. In contrast, the yields of the same - term AAA and AA+ medium - term notes decreased [10][11]. - The yields of AAA/AA+ 10Y medium - term notes decreased by 5.77BP, the yields of AAA/AA+ 10Y urban investment bonds decreased by 5.86BP and 5.85BP respectively, the yield of AAA - 10Y bank secondary capital bonds decreased by 0.17BP, while the yield of 10Y treasury bonds increased by 2.40BP [3][12][13]. 3.2 Curve Shape and Yield Quantile Analysis - The steepness of the 1 - 2 - year and 2 - 3 - year yield curves of all ratings is the highest, and the 3 - 5 - year yield curve of low - grade bonds also has a relatively high steepness [13]. - In terms of the historical quantiles of absolute yields and credit spreads, the 4 - 5Y range still has a certain cost - performance [15]. 3.3 Market Situation of Two - tier Bonds - The market of Two - tier bonds weakened, with adjustments in the 2Y - 5Y range. The repair degree of the ultra - long - term part was weaker than that of other ultra - long - term credit bonds. The yields of 1 - 5 - year, 7 - year, and 10 - year AAA - bank secondary capital bonds changed to varying degrees [4][17]. - The buying interest in the active trading of Two - tier bonds was not weak, but the proportion of transactions below the valuation was not high, and the trading volume with a discount of more than 4BP was small [19][20]. 3.4 Market Situation of Ultra - long - term Credit Bonds - There were not many sell - side transactions of ultra - long - term credit bonds last week, and the discount transaction was not a panic - selling situation. The discount transaction proportion was between 0.00% and 17.50%, and the discount amplitude was mostly within 4BP [21]. - The coupon of ultra - long - term credit bonds has a certain cost - performance, and the proportion of high - activity transactions below the valuation continued to increase, remaining at a high level throughout the week [22]. 3.5 Institutional Behavior Analysis - Last week, public funds, wealth management, and insurance all reduced their net purchases of credit bonds compared with the previous week. Funds were net sellers of 5 - 30 - year credit bonds, with a net selling scale of 10.2 billion yuan [5][26]. - Other asset management products were net buyers of credit bonds, with a net purchase of 239.9 billion yuan, mainly increasing their holdings of 3 - 30 - year varieties, with a net purchase of 75.8 billion yuan [26].