抹平收益凸点的策略：量化信用策

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]