核心结论 金工量化周报 指增超额收益持续承压 量化基金业绩跟踪周报（2025.09.15-2025.09.19） 周度业绩：本周（2025.09.15-2025.09.19），公募沪深 300 指增平均超额收 益-0.11%，实现正超额收益的基金占比 32.86%；公募中证 A500 指增平均 超额收益-0.11%，实现正超额收益的基金占比 38.46%；公募中证 500 指增 平均超额收益-0.26%，实现正超额收益的基金占比 28.17%；公募中证 1000 指增平均超额收益-0.10%，实现正超额收益的基金占比 39.13%；公募主动 量化基金平均收益-0.13%，实现正收益的基金占比 39.17%；公募股票市场 中性基金平均收益-0.17%，实现正收益的基金占比 43.48%。 月度业绩：2025 年 9 月（截至 2025.09.19），公募沪深 300 指增平均超额 收益-0.27%，实现正超额收益的基金占比 25.71%；公募中证 A500 指增平 均超额收益-0.25%，实现正超额收益的基金占比 37.25%；公募中证 500 指 增平均超额收益-0.77%，实现正超额收益的基金占比 21.1 ...

- The report tracks the weekly performance of quantitative public funds, showing that the average excess return of CSI 300 enhanced index funds was -0.02%, with 47.06% of funds achieving positive excess returns during the week of July 21-25, 2025[1] - Monthly performance data indicates that as of July 25, 2025, the CSI 300 enhanced index funds had an average excess return of -0.38%, with only 14.93% of funds achieving positive excess returns[2] - Year-to-date (YTD) performance shows that CSI 300 enhanced index funds achieved an average excess return of 0.66%, with 72.13% of funds achieving positive excess returns as of July 25, 2025[3]