量化信用策略：控回撤的思路还奏效吗？

Group 1 - The simulated portfolio's returns have continued to rebound, with the exception of some secondary bond-heavy portfolios, while other credit style strategies have not outperformed their corresponding interest rate styles [3][17][22] - In the interest rate style portfolio, the secondary ultra-long and mixed barbell strategies showed significant rebounds, with weekly returns of 0.16% and 0.13% respectively [3][19] - In the credit style portfolio, the secondary ultra-long and mixed barbell strategies led with returns of 0.29% and 0.17% respectively [3][19] Group 2 - The average weekly return of the credit style time deposit heavy portfolio increased by 9.7 basis points to 0.06%, while the cumulative return since the fourth quarter has been lower than the corresponding interest rate style [3][22] - The city investment heavy portfolio's average return rose by 21 basis points to 0.07%, with bullet strategies achieving a return of 0.11%, outperforming short-end and barbell strategies [3][22] - The average return of the secondary capital bond heavy portfolio increased to 0.14%, with rebounds in secondary sinking and mixed barbell strategies at 0.15% and 0.17% respectively, but these rebounds were insufficient to offset previous losses [3][22] Group 3 - The credit style portfolio's coupon rates have shown signs of recovery, particularly in the bank subordinated bond heavy portfolio, which has a competitive yield in absolute terms [4][29] - The annualized yields for the secondary perpetual bond duration strategy are 2.19% and 2.23%, approximately 39 basis points away from the year's low [4][29] - The contribution from coupon income ranges from 20% to 90%, with most of the week's returns coming from capital gains [4][29] Group 4 - In the past four weeks, controlling drawdown has become the main strategy objective, with short-end sinking and commercial bank bond portfolios still showing positive cumulative excess returns [5][33] - The cumulative excess returns for city investment short-end sinking, commercial bank bullet, and broker bond sinking portfolios are 5 basis points, 4.4 basis points, and 1.5 basis points respectively, while other medium to long-term strategies have accumulated less than 5 basis points [5][33] - The city investment barbell strategy, which performed well in the previous two months, has seen its cumulative excess return drop to -25.7 basis points over the past four weeks [5][33] Group 5 - The trading direction for 4 to 5-year long-term credit bonds may show divergence, with some medium to long-term duration strategies lacking excess returns [6][36] - The short-end time deposit strategy's excess return turned negative this week, while the city investment sinking strategy showed a slight positive deviation from the benchmark [6][36] - The excess returns for ultra-long strategies have risen to their highest level since late October, with city investment, industry, and secondary ultra-long strategies recording 9.4 basis points, 11.1 basis points, and 29.7 basis points respectively [6][36]