超长债周报：30-10 利差冲高回落：超长债周报-20251222

Group 1: Report Industry Investment Rating - No relevant content found Group 2: Core Views of the Report - Last week, after the release of November economic data, the contradiction between strong supply and weak demand in China was prominent, with both production and consumption continuing to decline, but prices showed signs of improvement. The bond market first declined and then rose, showing a small V-shaped trend, slightly recovering throughout the week, and the 30 - 10 Treasury spread narrowed slightly. The trading activity of ultra - long bonds decreased slightly last week, but overall trading was very active. The term spread of ultra - long bonds remained flat, and the variety spread showed mixed changes [1][4][11][38]. - As of December 19, the spread between 30 - year Treasury bonds and 10 - year Treasury bonds was 41BP, at a historically low level. The spread between 20 - year China Development Bank bonds and 20 - year Treasury bonds was 17BP, at a historically extremely low position. The current bond market is more likely to fluctuate. The 30 - 10 spread冲高 slightly declined this week, and it is expected to fluctuate at a high level in the near future. The variety spread of 20 - year China Development Bank bonds is also expected to fluctuate narrowly [2][3][12][13]. Group 3: Summary by Relevant Catalogs Weekly Review Ultra - long Bond Review - After the release of November economic data last week, the bond market first declined and then rose, slightly recovering throughout the week, with the 30 - 10 Treasury spread narrowing slightly. The trading activity of ultra - long bonds decreased slightly, but overall trading was very active. The term spread of ultra - long bonds remained flat, and the variety spread showed mixed changes [1][4][11]. Ultra - long Bond Investment Outlook - 30 - year Treasury Bonds: As of December 19, the spread was 41BP, at a historically low level. In November, the economic downward pressure continued to increase. The estimated GDP growth rate in October was about 4.1% year - on - year, a 0.1% decline from October. The deflation risk was alleviated. The bond market is more likely to fluctuate. The 30 - 10 spread is expected to fluctuate at a high level in the near future [2][12]. - 20 - year China Development Bank Bonds: As of December 19, the spread was 17BP, at a historically extremely low position. The economic situation and bond market analysis are similar to those of 30 - year Treasury bonds. The variety spread of 20 - year China Development Bank bonds is expected to fluctuate narrowly [3][13]. Ultra - long Bond Basic Overview - The balance of outstanding ultra - long bonds was 24.3 trillion. As of November 30, the total amount of ultra - long bonds with a remaining maturity of more than 14 years was 24,341.6 billion, accounting for 15.1% of the total bond balance. Local government bonds and Treasury bonds were the main varieties. The 30 - year variety had the highest proportion [14]. Primary Market Weekly Issuance - Last week (December 15 - 19, 2025), the issuance of ultra - long bonds dropped sharply, with a total of 207 million yuan issued. Compared with the previous week, the total issuance decreased significantly. In terms of varieties, local government bonds accounted for the majority. In terms of terms, 15 - year, 20 - year, and 30 - year bonds were issued [19]. This Week's Pending Issuance - The announced issuance plan for ultra - long bonds this week is 120 million yuan, all of which are ultra - long local government bonds [25]. Secondary Market Trading Volume - Last week, the trading of ultra - long bonds was very active, with a trading volume of 123.02 billion yuan, accounting for 14.1% of the total bond trading volume. The trading activity decreased slightly. The trading volume and proportion of different varieties changed differently [27]. Yield - After the release of November economic data last week, the bond market showed a small V - shaped trend. The 30 - 10 Treasury spread narrowed slightly. The yields of Treasury bonds, China Development Bank bonds, local bonds, and railway bonds of different terms changed to different extents [38]. Spread Analysis - Term Spread: Last week, the term spread of ultra - long bonds remained flat, with an absolute low level. The 30 - year - 10 - year Treasury spread was 41BP, unchanged from the previous week, at the 22% quantile since 2010 [48]. - Variety Spread: Last week, the variety spread of ultra - long bonds showed mixed changes, with an absolute low level. The spreads between 20 - year China Development Bank bonds and Treasury bonds, and between 20 - year railway bonds and Treasury bonds were 17BP and 20BP respectively, with changes of 2BP and - 2BP from the previous week, at the 14% and 15% quantiles since 2010 [50]. 30 - year Treasury Bond Futures - Last week, the main contract of 30 - year Treasury bond futures, TL2603, closed at 112.66 yuan, with a 0.00% increase. The total trading volume was 658,100 lots (- 26,189 lots), and the open interest was 141,900 lots (- 718 lots). The trading volume decreased slightly compared with the previous week, and the open interest decreased slightly [55].