量化信用策略 截至 9 月 30 日，久期策略表现持续低迷。近四周，城投久期策略持续跑输基准，重仓 10 年 AA+城投债的哑铃型组合 累计超额收益降至-34bp 左右，节前一周基金对 5 年以上普信债卖盘收窄，但行情难言改善。二永债久期策略波动较 大，尽管 9 月逐次下跌后修复幅度大于普信债品种，其累计超额收益依旧收于-18bp、-30bp 的低位。相比之下，城投 短端下沉、商金债子弹型等策略组合超额收益相对靠前。 品种久期跟踪 主流品种久期防御特征明显。截至 9 月 30 日，城投债、产业债成交期限分别加权于 1.76 年、2.22 年，处于 2021 年 以来 65%-80%的分位区间，商业银行债中，二级资本债、银行永续债以及一般商金债加权平均成交期限分别为 3.67 年、 3.70 年、1.92 年，所处分位水平出现明显回落；从其余金融债来看，证券公司债、证券次级债、保险公司债、租赁公 司债久期分别为 1.51 年、1.73 年、4.11 年、1.23 年，除保险公司债之外，其余品种久期同样位于较低历史分位。 票息资产热度图谱 截至 2025 年 9 月 29 日，与前一周相比，非金融非地产类产业债收 ...

Quantitative Credit Strategy - The short-end perpetual bond strategy has shown defensive attributes, with excess returns of 13.3bp for city investment short-end, 7.2bp for commercial bank bullet-type bonds, and 6.6bp for bank perpetual bonds over the past four weeks [2][11] - City investment strategies have underperformed compared to perpetual bond strategies, with cumulative returns deviating from the benchmark by -10bp and -30bp for duration and barbell strategies respectively, while perpetual bond bullet-type and sinking strategies achieved around 5bp of excess returns [2][11] Duration Tracking of Bond Types - As of August 24, the weighted average durations for city investment bonds and industrial bonds are 2.01 years and 2.60 years respectively, while the durations for secondary capital bonds, bank perpetual bonds, and general commercial bank bonds are 4.30 years, 3.77 years, and 2.75 years respectively [3][15] - Bank perpetual bonds are at a historically low level, and other financial bonds have shown slight increases in duration, with securities company bonds and subordinated bonds at low historical percentiles [3][15] Yield Heatmap of Bond Types - As of August 25, the valuation yields and spreads of private enterprise industrial bonds and real estate bonds are higher than other types [4][18] - Non-financial and non-real estate industrial bond yields have generally increased, particularly for medium to long-term bonds, with a 4.8bp rise in 3-5 year state-owned enterprise private non-perpetual bonds [4][18] Long-term Credit Bond Tracking - The trading sentiment for long-term credit bonds remains low, with a decline in transaction volumes for 7-10 year industrial bonds and 10-year-plus credit bonds at yearly lows [4][22] - The yield adjustments for bonds over 7 years have exceeded 10bp, with the yield spread between 7-year city investment bonds and 20-30 year government bonds nearing 50bp [4][22] Local Government Bond Supply and Trading Tracking - A total of 369.2 billion yuan in local government bonds were issued in the week of August 18-22, including 239.3 billion yuan in new special bonds and 73.5 billion yuan in refinancing special bonds [5][25] - The main investment areas for special bond funds are "special new special bonds" and "ordinary/project income," with 550 billion yuan of special refinancing bonds issued in August, accounting for 5.6% of the month's local bond issuance [5][25]

Group 1 - The simulated portfolio continues to show negative returns, with the medium and short-term credit style portfolio experiencing smaller drawdowns compared to the corresponding interest rate style portfolio, while the long-term portfolio has seen significant declines [2][14] - In the interest rate style portfolio, the weekly returns for the deposit sinking and deposit bullet strategies were both -0.25%, while in the credit style portfolio, these strategies had smaller drawdowns with returns of -0.14% each [2][14] - The credit style deposit-heavy portfolio's weekly average return slightly rebounded to -0.14%, outperforming the corresponding interest rate style portfolio by 10.7 basis points, marking the strongest defensive strategy since late July [2][17] Group 2 - The credit strategy has created a certain yield space, with the secondary bond duration strategy's yield distance from the year's low exceeding 20 basis points [3][26] - The main strategy combinations have seen yields stop falling and start to rise, with the secondary bond duration strategy's weekly yield increasing by nearly 0.16 basis points, bringing the annualized yield to 2.02%, which is 22.3 basis points wider from the year's low [3][26] - The weekly yield contribution from the credit style portfolio remains in the range of -25% to -5%, with capital gains continuing to drag down returns [3][26] Group 3 - In the past four weeks, the medium and short-term perpetual bond heavy strategies have shown certain defensive attributes, with cumulative excess returns for the city investment short-term sinking, commercial bank bullet, and perpetual bond sinking strategies reaching 13.3 basis points, 7.2 basis points, and 6.6 basis points respectively [4][32] - The city investment heavy strategies have recently underperformed compared to the secondary perpetual heavy strategies, with the cumulative returns for the city investment duration and barbell strategies deviating from the benchmark by -10 basis points and -30 basis points respectively [4][32] - The short-end strategies have outperformed the benchmark, while the city investment sinking strategy's excess returns have fallen into negative territory [4][35]

Group 1: Report's Investment Rating - No information provided on the report's industry investment rating Group 2: Core Views - This week, the simulated portfolio's returns turned negative, with the credit - style portfolio's retracement relatively controllable. Among the interest - rate style portfolios, the short - end sinking of urban investment bonds and the sinking strategy of certificates of deposit (CDs) had relatively high weekly return readings, both around - 0.41%. Among the credit - style portfolios, the short - end sinking of urban investment bonds and the sinking strategy of CDs had smaller retracements, with return readings of - 0.16% and - 0.16% respectively [2][15][16]. - Since July, the CD strategy has a higher odds. The average weekly return of the credit - style CD heavy - position portfolio dropped to - 0.17%, a decrease of about 24bp from last week. It is also one of the few strategies with positive cumulative returns in the past three weeks. The corresponding interest - rate style portfolio underperformed the defensive strategy again after two weeks [2][19]. - In terms of return sources, the coupon of the credit - style urban investment bond heavy - position strategy is approaching the annual low and can hardly withstand recent fluctuations. The coupon contributions of the credit - style portfolio this week generally fell within the range of - 25% to - 5%, and capital gains significantly dragged down the comprehensive return [3][27]. - In the past four weeks, except for the short - end sinking of urban investment bonds, the remaining mainstream strategies generally lacked excess returns. From the perspective of strategy terms, short - term strategies significantly outperformed. Short - term CD strategies outperformed the benchmark, and the excess return of urban investment sinking reached the highest since late June [4][31][33]. Group 3: Summary by Relevant Catalogs 1. Portfolio Strategy Return Tracking 1.1 Portfolio Weekly Return Overview - As of August 15, this year, the cumulative returns of the interest - rate style and credit - style portfolios have significantly lagged behind the same period in the past two years. Among the main credit - style portfolios, the cumulative comprehensive returns of the long - term industrial portfolio, the short - end sinking of urban investment bonds, and the duration portfolio led, reaching 1.48%, 1.39%, and 1.22% respectively. The cumulative returns of the credit - style portfolios all exceeded the corresponding interest - rate style portfolios, while the cumulative returns of the interest - rate style portfolios basically fell back to within 1% [10]. - The average weekly return of the credit - style CD heavy - position portfolio dropped to - 0.17%, a decrease of about 24bp from last week. The weekly return of the urban investment bond heavy - position portfolio decreased by 38.6bp to - 0.27% compared with the previous week. The weekly return of the secondary bond heavy - position portfolio decreased by more than 40bp, but its absolute return performance was slightly stronger than that of the interest - rate style portfolio. The average return of the long - term bond heavy - position strategy dropped to - 0.55%, a decrease of about 64bp compared with the previous week [2][19]. 1.2 Portfolio Weekly Return Sources - The coupons of the main strategy portfolios continued to decline. The coupons of the short - end sinking and dumbbell - shaped portfolios of urban investment bonds were around an annualized 1.92% and 1.97% respectively, less than 5bp away from the annual low. The coupon of the secondary bond duration portfolio was still 14bp away from the low point, and the coupon volatility remained high [3][27]. 2. Credit Strategy Excess Return Tracking - In the past four weeks, the cumulative excess returns of the short - end sinking of urban investment bonds, the bullet - shaped portfolio of commercial financial bonds, and the sinking strategy portfolio of secondary bonds reached 16.2bp, 0.9bp, and 0.6bp respectively, while the cumulative readings of the remaining strategy portfolios dropped to the negative range. This week's weak performance widened the gap between the cumulative returns of the heavy - position strategy of Tier 2 and perpetual bonds and the urban investment bond heavy - position strategy, with the cumulative excess return dropping to below - 22bp [4][31]. - From the perspective of strategy terms, short - term strategies significantly outperformed. Short - term CD strategies outperformed the benchmark, and the excess return of urban investment sinking reached the highest since late June. In the medium - and long - term, all strategies showed negative excess returns, except that the excess return of the short - end sinking of urban investment bonds reached 9.7bp. The negative deviations of Tier 2 capital bonds and the bullet - shaped portfolio of commercial financial bonds from the benchmark were within 2bp, also having a certain defensive property [4][33]. Appendix: Simulated Portfolio Allocation Method - The simulated portfolio has some limitations, including the distortion of the portfolio allocation method and errors in the return calculation method. The actual product's bond allocation in terms of grade and term distribution is more complex and may change strategies according to market conditions. The fixed bond ratio in the simulated portfolio may be distorted, and there are some assumptions and simplifications in the calculation method of coupon and capital gains [5][47]

Quantitative Credit Strategy - As of August 1, the secondary capital bond heavy strategy has rapidly recovered, with the weekly average yield of the credit style secondary bond heavy portfolio rising nearly 87 basis points, reaching the highest absolute return since April [2][12] - The secondary bond heavy and long-term industrial strategies showed significant recovery compared to other portfolios, with weekly returns of 0.31% and 0.51%, respectively, compensating for over 65% of the losses from the previous week [2][12] - Financial bond duration strategies generally outperformed, with secondary bonds, perpetual bonds, and brokerage bond duration portfolios beating the mid-to-long-term benchmark by approximately 9.2 basis points, 8.7 basis points, and 10.4 basis points, respectively [2][12] Duration Tracking of Varieties - The transaction duration of secondary capital bonds has risen to 4.8 years as of August 3, with urban investment bonds and industrial bonds weighted at 2.24 years and 3.03 years, respectively, both at over 90% historical percentile levels since March 2021 [3][14] - Among commercial bank bonds, the weighted average transaction durations for secondary capital bonds, bank perpetual bonds, and general commercial bank bonds are 4.79 years, 4.02 years, and 2.91 years, respectively, with bank perpetual bonds at a relatively low historical level [3][14] - For other financial bonds, the durations of securities company bonds, subordinated securities bonds, insurance company bonds, and leasing company bonds are 1.78 years, 2.37 years, 3.00 years, and 1.61 years, respectively, with securities company bonds and subordinated securities bonds at low historical percentiles [3][14] Yield Heat Map of Coupon Assets - As of August 4, the yields of non-financial and non-real estate industrial bonds have generally declined, with yields for 1-year and 2-3 year private enterprise public non-perpetual bonds down by 5.8 basis points and 6.7 basis points, respectively [4][19] - Real estate bonds also saw a decline in yields, with the yield drop for 3-year private enterprise public non-perpetual bonds exceeding 6 basis points [4][19] - In the financial bond sector, bank subordinated bonds are favored, particularly in the short end, with yields for 1-year shares and 1-2 year city commercial bank secondary capital bonds down by 11.5 basis points and 8.8 basis points, respectively [4][19] Long-term Credit Bond Insights - The issuance scale of long-term credit new bonds totaled 13.42 billion, with supply returning to a low level, possibly due to rising issuance costs, as long-term bond issuers await favorable issuance windows [5][21] - Correspondingly, the average issuance rate of long-term credit new bonds continued to rise, with the issuance rate of long-term urban investment bonds reaching over the 50th percentile for the first time in 24 years [5][21] Local Government Bond Supply and Trading Tracking - The average issuance rate of local bonds has marginally increased, with the yield spreads for 30-year, 20-year, and 10-year local bonds widening to 14 basis points, 12 basis points, and 11 basis points, respectively, compared to the same-term government bonds [6][22]

Group 1 - The simulated portfolio returns have turned upward, with credit style portfolios significantly outperforming interest rate style portfolios. The weekly returns for the industrial ultra-long and urban investment ultra-long strategies were 0.32% and 0.26% respectively [2][14][15] - The industrial ultra-long bond heavy strategy has maintained positive returns for nine consecutive weeks, with an average weekly return increase of 34.7 basis points since mid-May [2][18] - The urban investment heavy portfolio's weekly return increased by over 20 basis points, benefiting from strong performance at the ultra-long end, achieving a weekly return of 0.18% [2][18] Group 2 - The coupon income from various strategy portfolios has slightly rebounded, while volatility remains low compared to the past year. The coupon contribution for credit style portfolios generally fell within the 10% to 40% range [3][26] - The secondary bond bullet strategy's coupon increased by nearly 0.08 basis points compared to the previous week, although most secondary capital bond heavy portfolios remain below an annualized 1.9% [3][26] Group 3 - In the past four weeks, financial bond duration strategies have lagged behind downshift strategies, with cumulative excess returns for broker bonds downshift, urban investment duration, and bullet strategies falling to 2.7 basis points, 0.9 basis points, and -3.7 basis points respectively [4][31] - The excess returns are concentrated in the non-financial credit ultra-long end, with the ultra-long industrial strategy achieving excess returns of over 16 basis points for three consecutive weeks, outperforming urban investment ultra-long and secondary ultra-long strategies [4][34]

Group 1 - The simulated portfolio's returns have declined this week, with credit style portfolios experiencing smaller drawdowns compared to interest rate style portfolios. The weekly returns for the industrial ultra-long and municipal short-end sinking strategies were -0.1% and -0.13% respectively [2][14] - In the credit style portfolio, the industrial ultra-long and broker debt sinking strategies were among the few that still had positive returns, recording 0.1% and 0.03% respectively [2][15] - The average weekly return for the credit style time deposit heavy combination fell to -0.01%, with a controllable decline compared to the previous week. The short-duration combinations demonstrated strong volatility resistance [2][17] Group 2 - The coupon income from municipal heavy strategies has dropped to a low point, making it difficult to cover weekly capital gains losses. Most municipal heavy combinations have seen their annualized coupon income fall below 1.9% [3][24] - The coupon contributions from the credit style combinations have generally turned negative, particularly for the municipal dumbbell and secondary debt duration strategies, which fell into the -35% to -30% range [3][24] Group 3 - In the past four weeks, broker debt strategies have gained favor, with cumulative excess returns for broker debt duration, municipal dumbbell, and broker debt sinking strategies at 18.5bp, 15.6bp, and 12.4bp respectively [4][28] - The broker debt duration strategy has achieved a cumulative return of 1.92% since the second quarter, ranking just below the municipal dumbbell strategy, which is around 1.98% [4][28] - Short-duration strategies have outperformed the mid-to-long-term benchmarks, with the municipal short-end sinking strategy exceeding the mid-to-long-term benchmark by the largest margin since May [4][30]

Group 1: Portfolio Strategy Performance Tracking - The simulated portfolio returns have rebounded, with significant increases in credit positions. The industrial ultra-long and secondary ultra-long strategy combinations in the interest rate style portfolio both recorded returns around 0.15% [2][14] - In the credit style portfolio, the industrial ultra-long and secondary ultra-long strategy combinations achieved returns of 0.41% each, leading the performance [2][15] - The weekly average return of the credit style time deposit heavy combination rose to 0.14%, an increase of 9.3 basis points compared to the previous week, while the city investment heavy combination's average weekly return increased to 0.23%, up over 20 basis points from last week [2][18] Group 2: Sources of Returns - The interest income from various strategy combinations has slightly rebounded, with most strategies showing an increase in interest income. The city investment short-end sinking and secondary debt sinking strategies saw interest income increases of approximately 0.04 basis points [3][27] - The annualized interest income for most combinations remains below 2%, except for the city investment short-end sinking and barbell combinations, which are still above 1.95% [3][27] - The contribution of interest income in credit style combinations generally falls within the range of 10% to 25%, with capital gains being the primary source of returns, particularly for the city investment bullet-type and secondary debt duration combinations, where interest contributions dropped to around 13% [3][27] Group 3: Credit Strategy Excess Return Tracking - Over the past four weeks, the cumulative excess return difference between duration strategies and sinking strategies has widened. The cumulative excess returns for city investment barbell, city investment duration, and broker debt duration strategy combinations were 33.6 basis points, 7.4 basis points, and 5.8 basis points, respectively [4][31] - The excess returns for short-end strategies have decreased, with the time deposit strategy dropping to around -1.6 basis points, while the city investment sinking strategy slightly surpassed the benchmark [4][34] - The excess returns for ultra-long strategies have rebounded to levels seen in early June, with the secondary ultra-long strategy combination's excess return rising to over 17 basis points this week, contrasting with the negative readings from the previous three weeks [4][34]

Group 1 - The report indicates that the simulated portfolio performance remains mixed, with most strategies showing reduced returns except for some credit style portfolios. The city investment long-term and secondary long-term strategies achieved returns of 0.2% and 0.15% respectively [2][14] - In terms of heavy-weighted bond types, credit bond-heavy strategies generally outperformed interest rate bond-heavy portfolios. The average weekly return for credit style time deposit-heavy strategies decreased by 0.7 basis points, while the city investment heavy-weighted portfolio's average weekly return fell to 0.15%, a decline of 4.3 basis points from the previous week [2][18] - The cumulative investment returns for the city investment dumbbell strategy were -0.12% in Q1 and 1.85% in Q2 to date, indicating it is one of the more balanced strategies this year [2][18] Group 2 - The report highlights that the cumulative excess returns for duration strategies have outperformed sinking strategies over the past four weeks. The cumulative excess returns for the city investment dumbbell, broker debt duration, and city investment duration strategies were 45.7 basis points, 17.3 basis points, and 11.5 basis points respectively [4][30] - The report notes that the sinking strategies generally underperformed compared to duration strategies in the past month, with financial bond-heavy portfolios lacking aggressive attributes [4][30] - The report also states that the excess returns for short-end strategies are lacking, with the city investment sinking strategy's excess return significantly narrowing, and the time deposit strategy's return deviating from the benchmark by only 1 basis point [4][30]

Quantitative Models and Construction Methods 1. Model Name: Interest Rate Style Portfolio - **Model Construction Idea**: The portfolio is constructed by allocating 80% to interest rate bonds and 20% to credit bonds, with the interest rate bond portion using 10-year government bonds and the credit bond portion including 20% ultra-long bonds[13][19] - **Model Construction Process**: - **Bullet Strategy**: Allocates 1-year AAA interbank certificates of deposit (CDs), 3-year AA+ municipal bonds, and 3-year AAA- perpetual bonds[13] - **Duration Strategy**: Allocates 4-year AA+ municipal bonds and 4-year AAA- perpetual bonds[13] - **Ultra-long Strategy**: Allocates 10-year AA+ municipal bonds and 10-year AAA- subordinated bonds[13] - **Mixed Barbell Strategy**: Allocates 1-year AA+ municipal bonds and 10-year AA+ municipal bonds in a 1:1 ratio[13] - **Model Evaluation**: The interest rate style portfolios generally outperform their credit style counterparts in absolute returns, with cumulative returns around 1% year-to-date[10] 2. Model Name: Credit Style Portfolio - **Model Construction Idea**: The portfolio is constructed by allocating 20% to government bonds and 80% to credit bonds, with a focus on various credit strategies such as bullet, duration, and ultra-long strategies[13][19] - **Model Construction Process**: - **Bullet Strategy**: Allocates 1-year AAA interbank CDs and 3-year AA+ municipal bonds[13] - **Duration Strategy**: Allocates 4-year AA+ municipal bonds and 4-year AAA- perpetual bonds[13] - **Ultra-long Strategy**: Allocates 10-year AA+ municipal bonds and 10-year AAA- subordinated bonds[13] - **Mixed Barbell Strategy**: Allocates 1-year AA+ municipal bonds and 10-year AAA- subordinated bonds in a 1:1 ratio[13] - **Model Evaluation**: Credit style portfolios, such as the municipal bond short-end sinking strategy, achieved cumulative returns of 1.04%, ranking among the top performers[10] --- Model Backtesting Results 1. Interest Rate Style Portfolio - **Weekly Returns**: Ultra-long strategies (e.g., secondary ultra-long and industrial ultra-long) achieved weekly returns of 0.19%[2][16] - **Cumulative Returns**: Year-to-date cumulative returns for various strategies are approximately 1%[10] 2. Credit Style Portfolio - **Weekly Returns**: Secondary ultra-long and industrial ultra-long strategies achieved weekly returns of 0.23% and 0.21%, respectively[2][16] - **Cumulative Returns**: Municipal bond short-end sinking, duration, and bullet strategies achieved cumulative returns of 1.04%, 0.96%, and 0.89%, respectively[10] --- Quantitative Factors and Construction Methods 1. Factor Name: Coupon Contribution - **Factor Construction Idea**: Measures the contribution of coupon income to portfolio returns, focusing on stability and low volatility[3][28] - **Factor Construction Process**: - Calculate the initial yield-to-maturity (YTM) of bonds in the portfolio - Multiply the YTM by the holding period to estimate coupon income[13] - **Factor Evaluation**: Coupon contributions for most strategies are concentrated between 20% and 40%, with municipal bond short-end sinking and barbell strategies maintaining stable coupon yields around 0.039%[3][28] 2. Factor Name: Excess Return - **Factor Construction Idea**: Measures the return of a strategy relative to a benchmark, focusing on strategies that outperform consistently[4][33] - **Factor Construction Process**: - Benchmark portfolios are constructed with specific allocations (e.g., 20% government bonds, 64% 3-year AA+ municipal bonds, and 16% 10-year AA+ industrial bonds)[36][38] - Calculate the difference between the strategy's return and the benchmark return over a specified period[36][38] - **Factor Evaluation**: Municipal bond duration and barbell strategies achieved cumulative excess returns of 11.3bp and 10.8bp, respectively, over the past four weeks[4][33] --- Factor Backtesting Results 1. Coupon Contribution - **Municipal Bond Strategies**: Coupon yields for short-end sinking and barbell strategies remained stable at approximately 0.039%[3][28] - **Other Strategies**: Most strategies had annualized coupon yields below 2%[3][28] 2. Excess Return - **Short-term Strategies**: Interbank CD bullet strategies achieved excess returns of 1.9bp, the highest since April[36][38] - **Medium-to-Long-term Strategies**: Municipal bond duration and barbell strategies achieved cumulative excess returns of 11.3bp and 10.8bp, respectively[4][33] - **Ultra-long Strategies**: Industrial ultra-long and secondary ultra-long strategies outperformed benchmarks by approximately 15bp[4][36]