如何看待30年国债补涨行情的延续性？

1. Report Industry Investment Rating No industry investment rating information is provided in the report. 2. Core Views of the Report - Since October, the bond market has shown a divergence in the term structure. The ultra - long - term interest rate varieties had a lagged increase in the first week of October but a concentrated catch - up in the second week, with the market style shifting from "spreading yield spread" to "compressing yield spread" [2][6]. - The catch - up of ultra - long bonds has pushed the spread between new and old bonds to compress, and the liquidity premium may determine the subsequent compression space. The spread between new and old bonds mainly depends on the "tax valuation anchor" and "liquidity premium", and the latter may play a more important role in the future [2][11][12]. - The deep - seated reason for the strong catch - up of ultra - long bonds last week is that the yield spread between ultra - long interest rates and other term interest rates has shown cost - effectiveness, attracting both allocation and trading desks [2][15]. - The bond market may see a downward space in the fourth quarter, but the rhythm may vary at different time points. In late October, it may enter a volatile period, and from November to December, it will be determined by the game between macro - fundamentals and policy expectations, with two scenarios presented [2][3][20]. - In terms of investment strategy, it is recommended to position the portfolio duration in the medium - to - long range, select high - quality coupon assets as the bottom position, and pay attention to trading opportunities in medium - duration varieties such as secondary perpetual bonds [3][103]. 3. Summary by Relevant Catalogs 3.1 How to View the Sustainability of the 30 - year Treasury Bond Catch - up Market - Market Performance in October: In the first week of October, the 10 - year Treasury bond outperformed the 30 - year Treasury bond in both the spot and futures markets. In the second week, the ultra - long - end assets took over, with the 30 - year Treasury bond yield accelerating downward and the catch - up momentum of ultra - long bonds being released [2][6]. - New and Old Bond Spread: The catch - up of ultra - long bonds drove the spread between new and old 30 - year special Treasury bonds (2500002 and 2500006) to compress. As of October 17, the spread had narrowed by 3.05BP. The subsequent spread trend may depend more on the liquidity premium [11][12]. - Reason for Catch - up: The yield spread between 30 - year and other - term Treasury bonds has reached a high level, attracting both allocation and trading desks. The trading desks, mainly represented by brokers and funds, played a leading role in the catch - up market [15][17]. - Market Outlook: The bond market may have a downward space in the fourth quarter. In late October, it may enter a volatile period due to important events. From November to December, two scenarios are presented based on the development of Sino - US economic and trade relations [2][3][20]. 3.2 Important Matters - Central Bank's Reverse Repurchase: In October, the central bank carried out 6000 billion yuan of 6 - month term buy - out reverse repurchase operations, with a net injection of 4000 billion yuan for 3 - month and 6 - month term buy - out reverse repurchases [27]. - CPI and PPI Data: In September, CPI decreased by 0.3% year - on - year and increased by 0.1% month - on - month; PPI decreased by 2.3% year - on - year, with the decline narrowing by 0.6 percentage points, and was flat month - on - month [29]. - Credit Data: From January to September 2025, the cumulative increase in social financing scale was 30.09 trillion yuan, 4.42 trillion yuan more than the same period last year. RMB loans increased by 14.75 trillion yuan [32]. - Sino - US Tariff Tension: On October 14, the US Treasury Secretary said that the 100% tariff on China "may not happen" and the communication channels between the two countries have reopened [33]. 3.3 Money Market - Open Market Operations and Fund Rates: From October 13 to 17, the central bank's 7 - day reverse repurchase operations had a net injection of - 3479 billion yuan. The bank - to - bank liquidity remained loose, and the policy rate of 7 - day open - market reverse repurchase was 1.40%. As of October 17, R001, R007, DR001, and DR007 changed compared with October 11, and the interest rate centers also changed slightly [37][41]. - Certificate of Deposit Rates and Repurchase Transactions: In the primary market, the net financing of inter - bank certificates of deposit (NCDs) last week was 2246.60 billion yuan, and the annual issuance scale as of the 42nd week of 2025 had reached 26.88 trillion yuan. The issuance interest rates of NCDs decreased compared with the previous week. In the secondary market, the yields of NCDs of all terms showed an upward trend [43][49][52]. 3.4 Bond Market - Primary Market: In the second week of October, the net supply of interest - rate bonds weakened, with a net financing of 218.71 billion yuan. The issuance of ultra - long - term special Treasury bonds in 2025 ended last week. As of October 17, the cumulative net financing of national bonds in 2025 was about 5.40 trillion yuan, and that of local bonds was about 6.15 trillion yuan. The issuance scale of special refinancing bonds as of last week was 2.01 trillion yuan [55][56][63]. - Secondary Market: Sino - US economic and trade games led to a weakening of the equity market, and interest rates showed a downward trend, with the long - end and ultra - long - end performing better. The 10 - 1 - year term spread further compressed. The average daily turnover rates of the 10 - year Treasury bond active bond (250011) and the 10 - year CDB bond active bond (250215) increased, and the liquidity premium between the 10 - year Treasury bond active bond and the secondary - active bond decreased to 5.20BP [55][66][70]. 3.5 Institutional Behavior Tracking - Leveraged Trading: Last week, the leveraged trading scale returned to a high level with the relatively loose capital, with an average of about 8.04 trillion yuan. The 20 - day moving average of the daily trading volume of inter - bank pledged repurchase was 6.72 trillion yuan, a decrease of about 0.15 trillion yuan compared with the previous week [86]. - Cash Bond Market Transactions: State - owned banks increased their holdings of bonds, mainly focusing on Treasury bonds within 5 years and policy - financial bonds between 5 - 10 years. Rural commercial banks reduced their buying and showed a net - selling profit - taking operation. Brokers and funds, as important trading desks, increased their holdings of Treasury bonds of all terms and 5 - 10 - year policy - financial bonds. Insurance companies increased their holdings of local bonds over 10 years [78][90]. 3.6 High - Frequency Data Tracking - Futures and Commodity Prices: Last week, the settlement prices of rebar futures decreased by 1.69% week - on - week, wire rod futures increased by 6.55%, cathode copper futures decreased by 2.09%, the cement price index decreased by 0.22%, and the Nanhua Glass Index decreased by 9.28%. The CCFI index decreased by 4.11%, and the BDI index increased by 5.68% [98]. - Food and Crude Oil Prices: The wholesale price of pork decreased by 4.35% week - on - week, and the wholesale price of vegetables increased by 3.89%. The settlement prices of Brent crude oil futures and WTI crude oil futures decreased by 2.66% and 2.44% respectively [98]. - Exchange Rate: The central parity rate of the US dollar against the RMB last week was 7.09 [101]. 3.7 Market Outlook - Market Trend: The bond market may see a downward space in the fourth quarter, but the rhythm may vary at different time points. In late October, it may enter a volatile period, and from November to December, it will be determined by the game between macro - fundamentals and policy expectations, with two scenarios presented [2][3][20]. - Investment Strategy: It is recommended to position the portfolio duration in the medium - to - long range, select high - quality coupon assets as the bottom position, and pay attention to trading opportunities in medium - duration varieties such as secondary perpetual bonds [3][103].