超长债周报：超长债收益率小幅上行-20251123

Report Industry Investment Rating No relevant content provided. Core Viewpoints of the Report - Last week, due to tight liquidity during the tax period and a sharp decline in the A - share market, the bond market fluctuated narrowly with slightly rising yields, and ultra - long bonds declined slightly. The trading activity of ultra - long bonds increased slightly and was very active. The term spread of ultra - long bonds remained flat, and the variety spread narrowed [1][3][10]. - As of November 21, the spread between 30 - year and 10 - year treasury bonds was 34BP, at a relatively low historical level. The spread between 20 - year CDB bonds and 20 - year treasury bonds was 13BP, at an extremely low historical position. Considering the economic situation and market sentiment, the probability of a bond market rebound is higher, and the spreads are expected to compress [2][3][11]. Summary by Relevant Catalogs Weekly Review - Ultra - long Bond Review: Last week, tight tax - period liquidity, a sharp A - share decline led to a narrow - range bond market with slightly rising yields and a small decline in ultra - long bonds. Trading activity increased slightly and was very active. The term spread remained flat, and the variety spread narrowed [1][10]. - Ultra - long Bond Investment Outlook - 30 - year Treasury Bonds: As of November 21, the 30 - 10 spread was 34BP. In October, economic downward pressure increased, with GDP growth at about 4.2% (down 1.1% from September), and deflation risks remained. The bond market is likely to rebound, and the 30 - 10 spread is expected to compress [2][11]. - 20 - year CDB Bonds: As of November 21, the 20 - year CDB - treasury spread was 13BP. Similar to the 30 - year treasury bond situation, the bond market is likely to rebound, and the 20 - year CDB bond variety spread is expected to continue compressing [3][12]. - Ultra - long Bond Basic Overview: As of October 31, the balance of ultra - long bonds was 23.9 trillion, accounting for 15.0% of all bonds. Local government bonds and treasury bonds were the main varieties. By remaining term, the 30 - year variety had the highest proportion [13]. Primary Market - Weekly Issuance: Last week (November 17 - 21, 2025), ultra - long bond issuance decreased to 886 billion yuan. By variety, local government bonds were 811 billion, and bank sub - bonds were 65 billion. By term, 15 - year bonds were 395 billion, 20 - year were 191 billion, and 30 - year were 300 billion [18]. - This Week's Planned Issuance: This week's announced ultra - long bond issuance plan is 155 billion yuan, mainly including 153.8 billion yuan of ultra - long local government bonds [24]. Secondary Market - Trading Volume: Last week, ultra - long bond trading was very active, with a turnover of 926.1 billion yuan, accounting for 11.3% of all bonds. The trading activity increased slightly compared to the previous week [28]. - Yield: Last week, due to tight liquidity and A - share decline, bond yields rose slightly, and ultra - long bonds declined slightly. Yields of different - term treasury bonds, CDB bonds, local bonds, and railway bonds changed accordingly [38]. - Spread Analysis - Term Spread: Last week, the ultra - long bond term spread remained flat, with an absolute low level. The 30 - 10 treasury bond spread was 34BP, unchanged from the previous week, at the 14% percentile since 2010 [49]. - Variety Spread: Last week, the ultra - long bond variety spread narrowed, with an absolute low level. The 20 - year CDB - treasury spread and 20 - year railway - treasury spread decreased by 2BP, at the 11% and 12% percentiles since 2010 [50]. 30 - year Treasury Bond Futures - Last week, the 30 - year treasury bond futures main contract TL2512 closed at 115.57 yuan, down 0.51%. Trading volume increased slightly, and open interest decreased slightly [54].