公募股基持仓&债基久期跟踪测算周报：股票加仓通信，债基久期小幅下降-20250803

Report Summary 1. Report Industry Investment Rating No information provided in the given content. 2. Core Viewpoints - From July 28 - August 1, 2025, the CSI 300 declined by 1.75%, while the overall estimated stock position of active equity and partial - equity hybrid funds remained unchanged at 84.58% [3][7]. - The top 5 industries held by active equity and partial - equity hybrid funds this week are Electronics (13.52%), Electric Power Equipment (8.33%), Medicine and Biology (7.37%), Communication (6.35%), and Automobile (6.19%) [4][17]. - The top 3 industries with increased positions are Communication (+0.66%), National Defense and Military Industry (+0.58%), and Comprehensive (+0.53%); the top 3 industries with decreased positions are Computer (-0.39%), Bank (-0.35%), and Automobile (-0.30%) [4][17]. - The yield to maturity of the 10 - year China Development Bank bond decreased by 5bps this week. The median estimated duration of medium - and long - term pure bond funds decreased by 0.00 to 3.66 years, at the 99.70% quantile in the past 5 years [4][20]. 3. Summary by Relevant Catalogs 3.1 Fund Stock Position Estimation - The overall estimated stock position of active equity and partial - equity hybrid funds has shown a volatile trend recently. Compared with the quarterly report, it has decreased by 3.64%. Active equity funds' estimated stock position increased by 0.39% to 88.69%, while partial - equity hybrid funds' position decreased by 0.08% to 83.64% [7]. - This week, the overall increase or decrease in positions of active equity and partial - equity hybrid funds was mostly concentrated in [0%, 1%] (496 funds), followed by [-1%, 0%) (180 funds) [11]. - Funds with sizes of 2 - 5 billion, 8 - 10 billion, and over 10 billion slightly increased their positions, while other - sized funds slightly decreased their positions [11]. - In terms of fund holding styles, growth stocks accounted for a higher proportion, and both value and growth stocks were slightly reduced this week. Small - cap stocks accounted for a relatively high proportion, with large - cap stocks slightly increasing positions, and mid - cap and small - cap stocks slightly decreasing positions [14]. 3.2 Bond Fund Duration Estimation - The median estimated duration of medium - and long - term pure bond funds decreased by 0.00 to 3.66 years, at the 99.70% quantile in the past 5 years. The average median duration in the past 4 weeks was 3.46 years. The duration divergence decreased, with the estimated duration standard deviation decreasing by 0.03 to 1.89 years. The median duration of short - term pure bond funds decreased by 0.08 to 1.02 years [4][20]. - The median duration of credit bond funds increased by 0.00 to 3.15 years, with 8% of actively - operated funds and 24% of conservatively - operated funds. The median duration of interest - rate bond funds decreased by 0.28 to 4.85 years, with 45% of actively - operated funds and 7% of conservatively - operated funds [4]. - The median estimated duration of credit bond funds was concentrated in [3, 3.5) (122 funds), followed by [3.5, 4) (118 funds). The median estimated duration of interest - rate bond funds was concentrated in [5,) (181 funds), followed by [4, 4.5) (50 funds) [26]. - Among credit bond funds, 8.02% of funds actively adjusted their duration, and 24.43% adjusted conservatively. Among interest - rate bond funds, 45.01% of funds actively adjusted their duration, and 7.28% adjusted conservatively [27]. - The yield to maturity of the 1 - year China Development Bank bond decreased by 3bps. The median estimated duration of short - term pure bond funds decreased by 0.08 to 1.02 years, at the 95.00% quantile in the past 5 years. The average median duration in the past 4 weeks was 1.02 years. The duration divergence increased, with the estimated duration standard deviation increasing by 0.00 to 0.48 years. The estimated duration of passive policy - bank bond funds increased by 0.10 to 3.87 years [31].