1. Report Industry Investment Rating No relevant content provided. 2. Core View of the Report - The 50 - year treasury bond has performed well recently, with the spread between 50 - year and 30 - year treasury bonds continuously narrowing. The current 50 - 30 year treasury bond spread is at a neutral level, with limited room for further compression and limited adjustment pressure [1][4]. 3. Summary by Related Contents 3.1 Performance of 50 - year Treasury Bonds - The 50 - year treasury bond has become an increasingly important trading variety in the low - coupon period. The spread between 50 - year and 30 - year treasury bonds decreased from 15.6bps on June 16th to 8.4bps on July 4th, a cumulative decrease of 7.2bps, and is now below the 2023 average. The current stock of 50 - year treasury bonds has reached 1.3 trillion, making it a significant investment variety [1][7]. 3.2 Factors Affecting the 50 - 30 Year Treasury Bond Spread - **Fundamentals**: Fundamental indicators such as PMI, CPI, and PPI have no significant correlation with the 50 - 30 year treasury bond spread in recent years, indicating that fundamentals have little explanatory power for this spread, which mainly reflects asset attribute differences [1][10]. - **Turnover Rate**: Since 2023, the turnover rate of ultra - long bonds has increased significantly. In June this year, the monthly turnover rate of 50 - year treasury bonds reached 7.5%, exceeding that of 30 - year treasury bonds. There is a certain correlation between the difference in turnover rates of 50 - year and 30 - year treasury bonds and the 50 - 30 year treasury bond spread. As the liquidity of 50 - year treasury bonds improves, the liquidity premium decreases, leading to a trend compression of the spread [2][12]. - **Stock Market Risk Preference**: The risk preference reflected by the stock market has a certain positive correlation with the 50 - 30 year treasury bond spread. Historically, the spread between 50 - year and 30 - year treasury bonds has a certain positive correlation with the Wind All - A Index, suggesting that 30 - year treasury bonds can better represent market risk preference. However, it remains to be seen whether this relationship will change as the liquidity of 50 - year treasury bonds improves [2][16]. - **Funding Price and Bond Supply**: There is a certain negative correlation between the 50 - 30 year treasury bond spread and R007, indicating that the funding price has an impact on the curve slope, but the overall correlation is not significant. The net financing of 50 - year and 30 - year treasury bonds and their difference have a weak correlation with the 50 - 30 year treasury bond spread, but they have had a strong impact on the spread since last year [3][18]. 3.3 Quantitative Pricing Model - A quantitative pricing model was constructed using the monthly average of R007, the monthly net financing difference between 50 - year and 30 - year treasury bonds, the monthly average turnover rate difference between 30 - year and 50 - year treasury bonds, and the Wind All - A Index as explanatory variables to explain the 50 - 30 year treasury bond spread. The regression results show that the model has relatively strong explanatory power, and all four variables can strongly explain the ultra - long bond term spread [3][20]. 3.4 Current Situation and Outlook of the 50 - 30 Year Treasury Bond Spread - The June fitting value of the 50 - 30 year treasury bond spread was 4.9bp, slightly lower than the current 8.4bps. Assuming that the turnover rates of 50 - year and 30 - year treasury bonds are at the average of the past two months, R007 is at 1.5%, the stock index remains at the current level, and net financing is calculated according to the bond issuance plan, the fitting value of the 50 - 30 year treasury bond spread in the next few months will be around 7.4bps, close to the current spread. Therefore, the current 50 - 30 year spread is at a neutral level, with limited room for further compression and limited adjustment risk in a context of continuous liquidity easing and active trading of 50 - year treasury bonds [4][23].

Group 1: Report's Industry Investment Rating - No information provided in the content Group 2: Core Viewpoints - After crossing the quarter - end, the funding situation returned to ease, overnight interest rates continued to decline to 1.3%, the central bank did not initiate treasury bond transactions in June, and the PMI continued to rise slightly. The bond market resumed its upward trend, with ultra - long bonds rising slightly. The trading activity of ultra - long bonds decreased slightly last week but remained quite active. The term spread of ultra - long bonds widened, and the variety spread narrowed. Considering the economic data, although the economy showed resilience in May, there are still downward pressures. After the half - year mark, the funding rate declined again, and the probability of the bond market rising is greater. However, the term spread of 30 - year treasury bonds and the variety spread of 20 - year CDB bonds are still low, with limited spread protection [1][2][3] Group 3: Summary by Relevant Catalogs Weekly Review Ultra - long Bond Review - After the quarter - end, the funding became looser, overnight rates dropped to 1.3%, the central bank did not trade treasury bonds in June, PMI rose slightly, the bond market went up, and ultra - long bonds had a small increase. Trading activity of ultra - long bonds decreased slightly but was still active. The term spread widened, and the variety spread narrowed [1][9] Ultra - long Bond Investment Outlook - **30 - year Treasury Bonds**: As of July 4, the spread between 30 - year and 10 - year treasury bonds was 21BP, at a historically low level. In May, the estimated GDP growth was about 5.0% year - on - year, down 0.1% from April but still above the annual target. With CPI at - 0.1% and PPI at - 3.1% in May, deflation risks remain. Exports declined rapidly in May, and domestic housing prices turned negative month - on - month. After the half - year mark, the funding rate fell again, and the bond market is more likely to rise. However, the term spread of 30 - year treasury bonds is low, with limited protection [2][10] - **20 - year CDB Bonds**: As of July 4, the spread between 20 - year CDB bonds and 20 - year treasury bonds was 3BP, at a historically extremely low level. Similar to the 30 - year treasury bonds, considering the economic situation in May and the decline in the funding rate after the half - year mark, the bond market is likely to rise. But the variety spread of 20 - year CDB bonds is low, with limited protection [3][11] Ultra - long Bond Basic Overview - The balance of outstanding ultra - long bonds exceeded 22.2 trillion. As of June 30, the total amount of ultra - long bonds with a remaining maturity of over 14 years was 222,528 billion, accounting for 14.5% of all bonds. Local government bonds and treasury bonds are the main varieties. By variety, treasury bonds accounted for 26.3%, local government bonds 67.5%, etc. By remaining maturity, the 25 - 35 - year variety accounted for the highest proportion at 40.4% [12] Primary Market Weekly Issuance - Last week (June 30 - July 4, 2025), ultra - long bond issuance decreased significantly, with a total of 359 billion yuan issued. By variety, local government bonds accounted for 344 billion, and mid - term notes 15 billion. By term, 15 - year bonds accounted for 139 billion, 20 - year for 70 billion, and 30 - year for 151 billion [17] This Week's Scheduled Issuance - This week's announced ultra - long bond issuance plan totals 768 billion. By variety, ultra - long local government bonds account for 748 billion, and mid - term notes 20 billion [22] Secondary Market Trading Volume - Last week, ultra - long bond trading was quite active, with a turnover of 11,010 billion, accounting for 13.1% of all bonds. Trading activity decreased slightly compared to the previous week. Ultra - long treasury bond turnover decreased by 2,214 billion, and its proportion decreased by 1.5%; ultra - long local bond turnover decreased by 688 billion, and its proportion decreased by 14.1%; ultra - long policy - bank bond turnover increased by 4 billion, and its proportion increased by 0.1%; ultra - long government - agency bond turnover increased by 78 billion, and its proportion increased by 37.2% [24] Yield - After the quarter - end, the funding situation eased, overnight rates dropped to 1.3%, the central bank did not trade treasury bonds in June, PMI rose slightly, the bond market went up, and ultra - long bonds had a small increase. Yields of 15 - year, 20 - year, 30 - year, and 50 - year treasury bonds changed by 0BP, 0BP, 0BP, and - 3BP respectively to 1.79%, 1.89%, 1.85%, and 1.94%. Yields of representative individual bonds also changed, such as the 30 - year treasury bond active bond 24 special treasury bond 06 yield changing by - 2BP to 1.89% [38][39] Spread Analysis - **Term Spread**: Last week, the term spread of ultra - long bonds widened but remained at a low absolute level. The spread between 30 - year and 10 - year treasury bonds was 21BP, up 1BP from the previous week, at the 5% percentile since 2010 [45] - **Variety Spread**: Last week, the variety spread of ultra - long bonds narrowed and was at a low absolute level. The spread between 20 - year CDB bonds and treasury bonds was 3BP, and between 20 - year railway bonds and treasury bonds was 7BP, down 1BP and 2BP respectively from the previous week, at the 6% percentile since 2010 [46] 30 - year Treasury Bond Futures - Last week, the 30 - year treasury bond futures main contract TL2509 closed at 121.20 yuan, an increase of 0.26%. The total trading volume was 408,900 lots (- 8,046 lots), and the open interest was 151,000 lots (10,690 lots). The trading volume decreased slightly, and the open interest increased slightly compared to the previous week [51]

Core Viewpoint - The recent performance of 20-year and 50-year government bonds has attracted market attention due to their significant yield declines compared to other maturities, indicating a potential shift in investor focus towards these longer-duration bonds [1][2]. Group 1: Market Performance - The yields of 20-year and 50-year government bonds have decreased by approximately 5 basis points (BP) in the past week, with 20-year bonds down 5.5 BP and 50-year bonds down 4.65 BP, outperforming the more stable 10-year and 30-year bonds [1]. - The 50-year special government bond "25超长特别国债03" was issued at a competitive rate of 2.10%, significantly higher than the prevailing market yield, creating an arbitrage opportunity that has drawn substantial buying interest [2]. Group 2: Investment Opportunities - Analysts suggest that the current market conditions may still favor 20-year and 50-year bonds, as they offer higher coupon yields and capital gains potential, especially in a low-yield environment [2][4]. - The yield spread between 20-year and 10-year bonds has narrowed, indicating a potential for further compression, which could enhance the attractiveness of these longer-duration bonds [4][7]. Group 3: Institutional Behavior - Bond funds have shown a trend of increasing their holdings in ultra-long government bonds, with net purchases of 108 billion yuan in 15-20 year bonds and 13 billion yuan in bonds with maturities over 30 years [7]. - The current yield spread between 20-year and 30-year bonds is at a five-year high, suggesting that there is still room for compression, making these bonds appealing during periods of yield stability [7].

Market Overview - On June 19, the market showed no significant negative news, but both stocks and bonds adjusted, with the Shanghai Composite Index falling below 3400 points and the 10-year government bond yield approaching 1.65% [2] - The stock market exhibited strong defensive characteristics during the adjustment, with the Shanghai Composite Index, CSI 300, and CSI Dividend down by 0.79%, 0.82%, and 0.65% respectively [2] - The technology sector in China remained supported, with the STAR 50 index only declining by 0.54%, while the Hong Kong Hang Seng Technology index fell sharply by 2.42% [2] Bond Market Dynamics - The 10-year government bond yield rose by 0.4 basis points to 1.64%, while the 30-year government bond yield fell by 0.2 basis points to 1.84% [2] - The trading of 50-year government bonds became active, with yields on new bonds declining by approximately 13 basis points since May 29, indicating a significant interest in long-duration bonds [6] - The market is exploring structural opportunities due to a lack of a main trend, with the 20-year and 50-year bonds becoming targets for yield spread extraction [6] International Influences - The Federal Reserve maintained its policy rate at 4.25-4.50% during the June meeting, with a more hawkish internal view, as the number of officials expecting no rate cuts this year increased from 4 to 7 [3] - Following the Fed's decision, the yields on 10-year and 30-year U.S. Treasury bonds rose, although the adjustments were manageable, with neither yield breaking through 4.40% and 4.90% respectively [3] - The strengthening of the U.S. dollar has exerted pressure on precious metal prices, with gold prices entering a phase of fluctuation and decline, settling around 3370 USD per ounce [3] Domestic Monetary Policy - The People's Bank of China (PBOC) continued to provide support, with a net injection of 842 billion yuan through reverse repos, despite a slight increase in funding rates [4] - The current funding rates indicate a marginal increase, with overnight rates closing at 1.60-1.65% [4] - The market's liquidity situation is expected to stabilize, with the potential for further net injections from the PBOC [4] Equity Market Trends - The overall equity market experienced a significant decline, with the Wind All A index down by 1.20% and a trading volume of 1.28 trillion yuan, reflecting a 591 billion yuan increase from the previous day [7] - The decline in the market is attributed to escalating geopolitical tensions in the Middle East, particularly concerning Iran, which has heightened risk aversion among investors [7][8] - Despite the overall downturn, there remains a focus on technology sectors, with robotics and semiconductor stocks showing temporary gains [8]