信用债市场周度回顾260330：信用债一级市场拆解：低估值发行的现状和影响-20260330

Group 1 - The core viewpoint of the report indicates that the undervaluation of credit bonds (the difference between issuance rates and market valuations on listing day) is more pronounced in 2026 compared to 2025, with an average difference of 4.14 basis points (BP) as of March 29, 2026, compared to 3.03 BP in 2025, driven by strong demand for credit bond allocations [7][8][12] - Key characteristics of the credit bond primary market include: (1) More pronounced undervaluation in the interbank market compared to exchanges, with an average difference of 3.8 BP for interbank versus 2.4 BP for exchanges since 2025; (2) Short-term financing bonds show greater undervaluation than other types, averaging 5.6 BP and 5.8 BP in 2025 and 2026 respectively, while other bond types range from 2 to 4 BP; (3) Innovation bonds exhibit more significant undervaluation compared to non-innovation bonds, particularly in the first three quarters of 2025, with a narrowing trend since Q4 2025; (4) High-grade credit bonds show more pronounced undervaluation compared to medium and low-grade bonds, with AAA-rated bonds averaging 5.6 BP lower than market valuations in 2026, compared to -4.3 BP in 2025 [8][12][17] Group 2 - In the weekly review of the credit bond market, net financing has been positive for two consecutive weeks, with total issuance of 4,212.7 billion yuan and net financing of 1,430.3 billion yuan, an increase from 949.7 billion yuan in the previous week [12][17] - The secondary market saw a decrease in transaction volume, with total transactions amounting to 9,099 billion yuan, down by 115 billion yuan from the previous week, and most medium-term note yields declining, with 3-year AAA medium-term note yields down by 0.98 BP to 1.77% [17][18] - The report highlights that the distribution of credit bond issuances by rating shows that AAA-rated issuers accounted for the largest share at 48.1%, with the largest industry share coming from comprehensive issuers at 24.17% and construction industry issuers at 23.28% [12][13]