Group 1 - The simulated portfolio returns have generally rebounded this week, with most credit style portfolios outperforming their corresponding interest rate styles. The weekly returns for secondary capital bonds and long-term strategies were both 0.05%, while the leading credit style strategies, perpetual bond duration and perpetual bond down strategies, achieved returns of 0.13% and 0.12% respectively [2][10][16] - The average weekly return for the credit style certificate of deposit (CD) heavy portfolio increased by 4 basis points to 0.04%, remaining at a relatively low level since October. The city investment heavy portfolio's average weekly return slightly rose to 0.03%, which is still lower than the CD strategy [2][17] - The main source of returns this week was the increase in coupon rates across various strategy portfolios, with investment returns primarily driven by coupon income. The coupon contribution was distributed between 30% to 100%, with the secondary bond bullet strategy contributing 60% of its returns from capital gains [3][26] Group 2 - Over the past four weeks, the duration city investment strategy has outperformed the financial bond heavy strategy. The cumulative excess returns for the city investment strategies were 17.9 basis points for the bullet strategy, 16.8 basis points for the duration strategy, and 3.6 basis points for the broker bond down strategy [4][30] - In terms of strategy duration, the excess returns for the medium to long-term city investment duration strategy have turned negative. The short-term CD strategy has shown negative excess returns, while the city investment down strategy's excess return increased to 2.7 basis points [4][32] - The cumulative comprehensive returns for the main credit style strategies this year have been led by city investment short-term down, city investment duration, and city investment bullet strategies, achieving returns of 1.56%, 1.34%, and 1.3% respectively [10][11]

Group 1 - The report indicates a divergence in the performance of simulated portfolios, with most strategies experiencing a decline in returns, while some credit style portfolios saw a rebound [2][14][15] - In the interest rate style portfolios, the city investment ultra-long and city investment barbell strategies achieved returns of 0.22% and 0.17% respectively, while in the credit style portfolios, the city investment ultra-long and city investment barbell strategies had returns of 0.5% and 0.3% respectively [2][15] - The weekly average return of the city investment heavy bond portfolio increased to 0.2%, up by 9.1 basis points from the previous week, with the ultra-long city investment strategy showing significant recovery, achieving a weekly return of 0.5% [2][17] Group 2 - The report highlights that the cumulative excess returns of various credit strategies have shown divergence over the past four weeks, with the city investment barbell, duration, and short-end sinking strategies yielding cumulative excess returns of 23.1 basis points, 14.4 basis points, and -0.2 basis points respectively [4][31] - The financial bond strategies have not shown excess returns in the past month, with the secondary capital bond bullet-type and broker bond duration strategies both deviating negatively from the benchmark by over 10 basis points [4][31] - The ultra-long city investment strategy achieved an excess return of 18.7 basis points, while the industrial ultra-long and secondary ultra-long strategies underperformed their respective benchmarks [4][34]