公募股基持仓&债基久期跟踪测算周报：股票加仓有色金属，债基久期小幅上升-20250818

Report Summary Core Viewpoints - From August 11 - 15, 2025, the CSI 300 rose 2.37%, and the estimated stock position of active equity and partial - equity hybrid funds increased by 1.18% to 87.68% [3][7]. - The top 5 industries for active equity and partial - equity hybrid funds this week were Electronics (12.91%), Power Equipment (8.38%), Medicine and Biology (7.11%), Communication (6.95%), and Automobile (6.19%) [4][17]. - The top 3 industries for adding positions were Non - ferrous Metals (+0.78%), Communication (+0.73%), and Non - banking Finance (+0.37%); the top 3 industries for reducing positions were Food and Beverage (-0.43%), Electronics (-0.28%), and Banking (-0.25%) [4][17]. - The yield to maturity of the 10 - year China Development Bank bond rose 8bps this week. The median estimated duration of medium - and long - term pure bond funds increased by 0.19 to 3.79 years, at the 100.00% quantile in the past 5 years [4][20]. Summary by Directory Fund Stock Position Estimation - The overall estimated stock position of active equity and partial - equity hybrid funds has shown a volatile trend recently. This week, the position of active equity funds increased by 0.95% to 90.41%, and that of partial - equity hybrid funds increased by 1.24% to 87.06% [7]. - The overall increase or decrease in positions of active equity and partial - equity hybrid funds this week was mostly concentrated in [0%, 1%] (688 funds), followed by [-1%, 0%) (153 funds) [11]. - Funds with scales below 20 billion, 20 - 50 billion, 50 - 80 billion, and over 100 billion slightly increased positions this week, while funds of other scales slightly reduced positions [11]. - In terms of fund holding styles, the proportion of growth stocks in fund holdings is higher. Both value stocks and growth stocks were slightly added this week. The proportion of small - cap stocks in fund holdings is relatively high. Large - cap stocks and small - cap stocks were slightly added, while mid - cap stocks were slightly reduced [14]. Bond Fund Duration Estimation - The median estimated duration of medium - and long - term pure bond funds increased by 0.19 to 3.79 years, at the 100.00% quantile in the past 5 years. The average median duration in the past 4 weeks was 3.67 years. The duration divergence increased, and the estimated duration standard deviation rose by 0.28 to 2.02 years [4][20]. - The median duration of credit bond funds increased by 0.14 to 3.37 years, with 9% of funds being actively operated and 25% being conservatively operated; the median duration of interest - rate bond funds decreased by 0.12 to 4.88 years, with 40% of funds being actively operated and 8% being conservatively operated [4]. - The estimated duration of credit bond funds this week was concentrated in [3.5, 4) (127 funds), followed by [3, 3.5) (108 funds); the estimated duration of interest - rate bond funds was concentrated in [5,) (171 funds), followed by [4, 4.5) (49 funds) [27]. - Among credit bond funds, the proportion of funds with active duration operations (above the 80% quantile of their own duration in the past year) was 8.74%, and the proportion of funds with conservative duration operations (below the 20% quantile of their own duration in the past year) was 24.67%; among interest - rate bond funds, the proportion of funds with active duration operations was 40.49%, and the proportion of funds with conservative duration operations was 8.15% [28]. - The yield to maturity of the 1 - year China Development Bank bond rose 3bps this week. The median estimated duration of short - term pure bond funds remained unchanged at 1.20 years, at the 99.20% quantile in the past 5 years. The average median duration in the past 4 weeks was 1.20 years. The duration divergence decreased, and the estimated duration standard deviation decreased by 0.01 to 0.46 years [32]. - The estimated duration of passive policy - bank bond funds decreased by 0.06 to 3.80 years [32].