【固收】信用债发行量环比上升，各行业信用利差涨跌互现——信用债周度观察（20251208-20251212）（张旭/秦方好）

Group 1: Primary Market - In the week from December 8 to December 12, 2025, a total of 369 credit bonds were issued, with a total issuance scale of 459.51 billion, representing a week-on-week increase of 35.34% [4] - Among the issued bonds, industrial bonds accounted for 174 issues with a scale of 186.50 billion, up 62.28% week-on-week, making up 40.59% of the total issuance [4] - City investment bonds totaled 149 issues with a scale of 88.81 billion, down 7.82% week-on-week, representing 19.33% of the total [4] - Financial bonds had 46 issues with a scale of 184.20 billion, up 43.60% week-on-week, comprising 40.09% of the total [4] - The average issuance term for credit bonds was 2.80 years, with industrial bonds averaging 2.36 years, city investment bonds 3.34 years, and financial bonds 2.48 years [4] - The overall average coupon rate for credit bonds was 2.24%, with industrial bonds at 2.19%, city investment bonds at 2.39%, and financial bonds at 1.96% [4] - Four credit bonds were canceled during the week [4] Group 2: Secondary Market - In terms of credit spreads, the largest increase for AAA-rated industries was in agriculture, forestry, animal husbandry, and fishery, which rose by 3.1 basis points, while the largest decrease was in pharmaceuticals and biology, down 4.2 basis points [5] - For AA+ rated industries, the largest increase was in electrical equipment, up 2.7 basis points, and the largest decrease was in building materials, down 12.7 basis points [5] - The largest increase in AA-rated industries was in machinery equipment, up 4.9 basis points, while the largest decrease was in public utilities, down 2.8 basis points [5] - For city investment bonds, the largest increase in AAA-rated credit spreads was in Yunnan, up 4.7 basis points, and the largest decrease was in Guangdong, down 3.7 basis points [5] - The largest increase in AA+ rated credit spreads was in Beijing, up 13 basis points, while the largest decrease was in Shaanxi, down 4.8 basis points [5] - The largest increase in AA-rated credit spreads was in Yunnan, up 4.9 basis points, and the largest decrease was in Shaanxi, down 9.8 basis points [5] Group 3: Trading Volume - The total trading volume of credit bonds was 1625.43 billion, reflecting a week-on-week increase of 36.58% [6] - The top three categories by trading volume were commercial bank bonds, corporate bonds, and medium-term notes [6] - Commercial bank bonds had a trading volume of 628.04 billion, up 60.23% week-on-week, accounting for 38.64% of the total trading volume [6] - Corporate bonds had a trading volume of 402.76 billion, up 10.55% week-on-week, making up 24.78% of the total [6] - Medium-term notes had a trading volume of 294.03 billion, up 23.12% week-on-week, representing 18.09% of the total [6]