量化信用策略：哪些久期策略收益企稳？

Group 1 - The core view of the report indicates that the credit style simulated portfolio has mostly rebounded, while the interest rate style portfolio continues to decline, with specific strategies showing varying performance [3][15][18] - The weekly return of the credit style portfolio has seen a slight increase in certain strategies, such as the broker debt and secondary debt duration strategies, achieving returns of 0.05% and 0.04% respectively [3][15] - The report highlights that the secondary capital bond heavy strategy has stabilized, with an average weekly return of 0.01%, outperforming the corresponding interest rate style portfolio by approximately 19 basis points [3][18] Group 2 - In terms of return sources, the long-duration portfolio's coupon rates have generally rebounded, indicating the emergence of left-side opportunities, with annualized returns for urban investment and industrial long-duration strategies reaching 2.45% and 2.48% respectively [4][29] - The report notes that the secondary debt duration strategy has shown superior cumulative excess returns over the past four weeks, with returns of 8.1 basis points, outperforming other strategies [5][34] - The short-end configuration value has also increased, with the urban investment short-end sinking strategy recovering nearly 13 basis points from its lowest point in 2025 [4][29]