债券策略回撤幅度如何？

Group 1 - The core viewpoint of the report indicates that the simulated credit style portfolio yields have generally declined, while the losses in most interest rate style portfolios have narrowed [3][11] - The AA+ medium-short secondary bonds and interest rate bonds in the heavy positions have stabilized in yield compared to early this month [3][18] - The average weekly yield of the credit style portfolio has decreased by 7 basis points to -0.11%, which is less than the recovery seen last week, indicating a controlled overall decline [3][18] Group 2 - In terms of yield sources, most strategy combinations have seen an increase in coupon rates, with city investment and mixed bullet strategies rising by over 0.04 basis points [4][26] - The annualized coupon rates for medium-long strategies, including city investment duration, bullet, and perpetual bond duration combinations, have risen to over 2.16% [4][26] - The coupon contributions of the credit style portfolio have fallen into the range of -35% to 0%, indicating that coupon yields are unable to cover capital loss [4][26] Group 3 - Over the past four weeks, the cumulative excess losses and volatility of the perpetual bond duration strategy have both increased [5][30] - The cumulative excess yields for city investment short-end sinking, commercial bank bond bullet, and brokerage bond duration strategies are 21.3 basis points, 14.2 basis points, and -0.8 basis points respectively [5][30] - The short-duration deposit strategies have outperformed, with excess yields reaching the highest point since March [5][32]