【固收】信用债发行环比增加，各行业信用利差整体上行——信用债周度观察（20250721-20250725）（张旭/秦方好）

Group 1: Primary Market - In the week from July 21 to July 25, 2025, a total of 414 credit bonds were issued, with a total issuance scale of 592.83 billion, representing a week-on-week increase of 47.80% [3] - Among the issued bonds, industrial bonds accounted for 202 issues with a scale of 219.28 billion, a week-on-week increase of 24.66%, making up 36.99% of the total issuance [3] - City investment bonds totaled 166 issues with a scale of 109.63 billion, a week-on-week increase of 2.90%, representing 18.49% of the total [3] - Financial bonds had 46 issues with a scale of 263.92 billion, a week-on-week increase of 122.44%, accounting for 44.52% of the total [3] - The average issuance term for credit bonds was 3.35 years, with industrial bonds at 3.38 years, city investment bonds at 3.75 years, and financial bonds at 1.66 years [3] - The overall average coupon rate for credit bonds was 2.08%, with industrial bonds at 2.01%, city investment bonds at 2.25%, and financial bonds at 1.83% [3] - A total of 23 credit bonds were canceled during the week [3] Group 2: Secondary Market - Credit spreads increased across industries, with the largest increase in AAA-rated industries being in pharmaceuticals, which rose by 7.6 basis points, while electronics saw a decrease of 1.5 basis points [4] - For AA+ rated industries, real estate experienced the largest increase in credit spreads by 8.9 basis points, while building materials decreased by 15.3 basis points [4] - In the AA-rated category, electronics had the largest increase in credit spreads by 7.5 basis points, while building materials decreased by 0.5 basis points [4] - In terms of city investment bonds, the largest increase in AAA-rated credit spreads was in Shaanxi, which rose by 5.3 basis points, while Yunnan saw a decrease of 1.2 basis points [4] - For AA+ rated credit spreads, Fujian had the largest increase of 6.4 basis points, while Qinghai decreased by 1.2 basis points [4] - The largest increase in AA-rated credit spreads was in Hubei, which rose by 6.5 basis points, while Sichuan decreased by 2 basis points [4] Group 3: Trading Volume - The top three credit bonds by trading volume were commercial bank bonds, corporate bonds, and medium-term notes [5] - Commercial bank bonds had a trading volume of 573.26 billion, a week-on-week increase of 35.93%, accounting for 37.04% of the total trading volume [5] - Corporate bonds had a trading volume of 368.42 billion, a week-on-week increase of 1.83%, representing 23.81% of the total [5] - Medium-term notes had a trading volume of 327.90 billion, a week-on-week decrease of 4.54%, making up 21.19% of the total [5]