超长债周报：超长债继续缩量-20250921

Report Industry Investment Rating No information provided in the content. Core Viewpoints - Last week, the economic growth data for August continued to decline compared to July, some stock indices slightly corrected, and the third call between the Chinese and US presidents this year led to a bond market that first rose and then fell, with ultra - long bonds experiencing a small decline. The trading activity of ultra - long bonds slightly decreased last week but remained very active. The term spread of ultra - long bonds narrowed, while the variety spread widened [1][11]. - As of September 19, the spread between 30 - year and 10 - year treasury bonds was 32BP, at a historically low level. The economic downward pressure in August continued to increase, with the estimated GDP year - on - year growth rate in August at about 3.8%, a further decline from July. With an 8 - month CPI of - 0.4% and PPI of - 2.9%, deflation risks persisted. The bond market adjustment was mainly due to the disappointment in 2024 and the change in macro - narrative. Considering the desensitization of stocks and bonds since late August and the still - sluggish economy in August, the bond market trading mainline is expected to shift to fundamentals, and the short - term bond market is expected to rebound from an oversold position [2][12]. - As of September 19, the spread between 20 - year CDB bonds and 20 - year treasury bonds was 7BP, at a historically extremely low position. The economic situation and reasons for the bond market adjustment were similar to those of 30 - year treasury bonds, and the short - term bond market was also expected to rebound from an oversold position [3][13]. Summary by Directory Weekly Review - Ultra - long Bond Review: The 8 - month economic data in August decreased compared to July, stock indices slightly corrected, and after the call between the Chinese and US presidents, the bond market first rose and then fell, with ultra - long bonds slightly falling. Trading activity slightly decreased but was still very active. The term spread narrowed, and the variety spread widened [1][11]. - Ultra - long Bond Investment Outlook: For 30 - year treasury bonds and 20 - year CDB bonds, the spreads were at low historical levels. The economic downward pressure in August increased, with low GDP growth and deflation risks. The bond market adjustment was due to two reasons, and the short - term bond market was expected to rebound from an oversold position [2][3][12]. - Ultra - long Bond Basic Overview: The balance of ultra - long bonds was 23.3 trillion. Local government bonds and treasury bonds were the main varieties. By remaining term, the 30 - year variety had the highest proportion [14]. Primary Market - Weekly Issuance: Last week, the issuance of ultra - long bonds was relatively large, with a slight increase compared to the previous week. In terms of varieties, treasury bonds, local government bonds, and bank sub - bonds had significant issuances. In terms of terms, 30 - year bonds had the largest issuance [19]. - This Week's Planned Issuance: The announced issuance plan for this week was 138.6 billion, all of which were ultra - long local government bonds [23]. Secondary Market - Trading Volume: Last week, the trading of ultra - long bonds was very active, with a turnover of 1245.3 billion, accounting for 13.4% of the total bond turnover. The trading activity slightly decreased compared to the previous week, with different changes in turnover and proportion for different varieties [27]. - Yield: Due to the decline in economic data and the call between the Chinese and US presidents, the bond market first rose and then fell, with ultra - long bonds slightly falling. The yields of different - term treasury bonds, CDB bonds, local bonds, and railway bonds had different changes [36]. - Spread Analysis: The term spread of ultra - long bonds narrowed last week, with a low absolute level. The variety spread widened, also with a low absolute level [47][48]. - 30 - year Treasury Bond Futures: Last week, the main 30 - year treasury bond futures contract T2503 closed at 114.8 yuan, with a decrease of 0.04%. The total trading volume decreased significantly, and the open interest increased slightly [52].