超长债周报：30-10利差回升至41BP-20251207

1. Report Industry Investment Rating - No relevant content provided 2. Core Viewpoints of the Report - Last week, the central bank announced a 50 billion yuan investment in November through treasury bond trading, and the November PMI rose by 0.2 to 49.2. The bond market experienced a certain degree of sell - off, and ultra - long bonds tumbled. The trading activity of ultra - long bonds increased significantly, with the term spread widening and the variety spread showing mixed changes [1][11]. - For the 30 - year treasury bond, as of December 5, the spread between the 30 - year and 10 - year treasury bonds was 41BP, at a historically low level. Considering factors such as economic pressure and low interest rates, the bond market is more likely to fluctuate, and the 30 - 10 spread is expected to face short - term pressure [2][12]. - For the 20 - year CDB bond, as of December 5, the spread between the 20 - year CDB bond and the 20 - year treasury bond was 14BP, at a historically extremely low position. Given the economic situation and market sentiment, the bond market is likely to fluctuate, and the variety spread of the 20 - year CDB bond is expected to have narrow - range fluctuations [3][13]. 3. Summary by Relevant Catalogs 3.1 Weekly Review 3.1.1 Ultra - long Bond Review - The central bank's November treasury bond trading investment and the rise in PMI led to a sell - off in the bond market and a tumble in ultra - long bonds. Trading activity increased significantly, with the term spread widening and the variety spread showing mixed changes [1][11]. 3.1.2 Ultra - long Bond Investment Outlook - 30 - year Treasury Bond: The 30 - 10 spread is at a low level. The economy is under pressure, and the spread is expected to face short - term pressure [2][12]. - 20 - year CDB Bond: The spread between the 20 - year CDB bond and the 20 - year treasury bond is extremely low. The bond market is likely to fluctuate, and the variety spread of the 20 - year CDB bond is expected to have narrow - range fluctuations [3][13]. 3.1.3 Ultra - long Bond Basic Overview - The balance of outstanding ultra - long bonds is 24.3 trillion yuan. Local government bonds and treasury bonds are the main varieties. The 30 - year variety has the highest proportion [14]. 3.2 Primary Market 3.2.1 Weekly Issuance - Last week, the issuance volume of ultra - long bonds dropped sharply, totaling 5.73 billion yuan. By variety, treasury bonds were 2.7 billion yuan, local government bonds were 2.88 billion yuan, and corporate bonds were 0.15 billion yuan. By term, 15 - year bonds were 1.1 billion yuan, 20 - year bonds were 0.93 billion yuan, and 30 - year bonds were 3.69 billion yuan [20]. 3.2.2 This Week's Planned Issuance - The announced issuance plan for this week is 3.47 billion yuan, all of which are ultra - long local government bonds [26]. 3.3 Secondary Market 3.3.1 Trading Volume - Last week, ultra - long bonds were very actively traded, with a turnover of 1.1346 trillion yuan, accounting for 14.6% of the total bond turnover. Compared with the previous two weeks, the turnover increased by 221 billion yuan, and the proportion increased by 3.3% [29]. 3.3.2 Yield - Due to the central bank's investment and PMI changes, ultra - long bonds tumbled. The yields of treasury bonds, CDB bonds, local bonds, and railway bonds at different terms all changed, with the 30 - year treasury bond yield rising by 7BP to 2.26% [39]. 3.3.3 Spread Analysis - Term Spread: The term spread of ultra - long bonds widened last week, with an absolute low level. The 30 - year - 10 - year treasury bond spread was 41BP, up 7BP from the previous two weeks, at the 24% quantile since 2010 [51]. - Variety Spread: The variety spread of ultra - long bonds showed mixed changes last week, with an absolute low level. The spreads of the 20 - year CDB bond and railway bond against the treasury bond were 14BP and 16BP respectively, with changes of 2BP and - 2BP from the previous two weeks, at the 11% quantile since 2010 [53]. 3.4 30 - year Treasury Bond Futures - Last week, the main contract of the 30 - year treasury bond futures, TL2603, closed at 112.51 yuan, down 1.7%. The total trading volume was 706,800 lots, and the open interest was 145,600 lots, with a significant increase in trading volume and a slight decrease in open interest [58].