Report Industry Investment Rating - Not provided in the given content Core Viewpoints - 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 warming up 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 flattened, and the variety spread showed mixed changes [1][11][4]. - The current bond market is more likely to fluctuate. On one hand, the economic stabilization since the fourth quarter of last year mainly comes from the support of central government leveraging. Considering that there is no additional issuance of Treasury bonds in the fourth quarter of this year, it is expected that the financing growth rate of government bonds will decline rapidly in the fourth quarter, and the domestic economy will still be under pressure. On the other hand, the absolute level of interest rates is low, the market is desensitized to positive factors, and investors' sentiment is generally weak [2][3][12][13]. Summary by Relevant Catalogs Weekly Review - Ultra - long Bond Review - After the release of November economic data, the domestic bond market showed a small V - shaped trend and slightly warmed up, with the 30 - 10 Treasury spread narrowing slightly. The trading activity of ultra - long bonds decreased slightly but was still very active. The term spread flattened, and the variety spread showed mixed changes [1][11][4] Weekly Review - Ultra - long Bond Investment Outlook - **30 - year Treasury bonds**: As of December 19, the spread between 30 - year and 10 - year Treasury bonds was 41BP, at a relatively low historical level. The economic downward pressure in November continued to increase, with the estimated GDP growth rate in October at about 4.1%, a decline of 0.1% from October. The deflation risk has been alleviated. The bond market is likely to fluctuate, and the 30 - 10 spread is expected to fluctuate at a high level recently [2][12] - **20 - year CDB bonds**: As of December 19, the spread between 20 - year CDB bonds and 20 - year Treasury bonds was 17BP, at an extremely low historical position. Similar to the situation of 30 - year Treasury bonds, the bond market is likely to fluctuate, and the variety spread of 20 - year CDB bonds is expected to have narrow - range fluctuations [3][13] Weekly Review - Ultra - long Bond Basic Overview - The balance of outstanding ultra - long bonds is 24.3 trillion. As of November 30, the total amount of ultra - long bonds with a remaining term of more than 14 years was 243,416 billion, accounting for 15.1% of the total bond balance. Local government bonds and Treasury bonds are the main varieties. By remaining term, the 30 - year variety accounts for the highest proportion [14] Primary Market - Weekly Issuance - The issuance volume of ultra - long bonds dropped sharply last week (December 15 - 19, 2025), with a total issuance of 207 billion yuan. Compared with the previous week, the total issuance volume decreased significantly. By variety, local government bonds accounted for the largest share. By term, 30 - year bonds had the largest issuance volume [19] Primary Market - This Week's Scheduled Issuance - The announced issuance plan for ultra - long bonds this week is 12 billion yuan, all of which are ultra - long local government bonds [25] Secondary Market - Trading Volume - The trading of ultra - long bonds was very active last week, with a trading volume of 12,302 billion yuan, accounting for 14.1% of the total bond trading volume. The trading activity decreased slightly. The trading volume of ultra - long Treasury bonds increased, while that of ultra - long local bonds decreased [27] Secondary Market - Yield - After the release of November economic data, the bond market showed a small V - shaped trend and slightly warmed up, with the 30 - 10 Treasury spread narrowing slightly. The yields of different - term Treasury bonds, CDB bonds, local bonds, and railway bonds changed to varying degrees [38] Secondary Market - Spread Analysis - **Term spread**: The term spread of ultra - long bonds flattened last week, and the absolute level was low. The 30 - year - 10 - year Treasury spread was 41BP, unchanged from the previous week, at the 22% quantile since 2010 [48] - **Variety spread**: The variety spread of ultra - long bonds showed mixed changes last week, and the absolute level was low. The spreads between 20 - year CDB bonds and Treasury bonds, and between 20 - year railway bonds and Treasury bonds were 17BP and 20BP respectively, with changes of 2BP and - 2BP compared with the previous week, at the 14% and 15% quantiles since 2010 [50] 30 - year Treasury Bond Futures - Last week, the main contract TL2603 of the 30 - year Treasury bond futures 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, and the open interest decreased slightly [55]