Core Viewpoint - The A-share market showed strong performance in August, with major indices rising significantly, yet the excess returns of stock strategy private equity products were disappointing, marking the worst monthly performance of the year [1][2]. Group 1: Market Performance - In August, the Shanghai Composite Index rose by 7.97%, the Shenzhen Component Index increased by 15.32%, and the ChiNext Index surged over 24% [1]. - Despite the strong market, the average excess return of 3,122 stock strategy private equity products was -1.97%, the worst monthly performance this year [1]. Group 2: Quantitative vs. Subjective Strategies - Quantitative private equity products experienced a notable decline, with an average excess return of -3.94% in August, while subjective private equity products had an average excess return of -1.00% [1]. - The significant decline in quantitative products is attributed to a reversal in style, particularly the outperformance of large-cap stocks over small-cap stocks, and severe sector differentiation due to rapid growth in financing scale [1][2]. Group 3: Consistent Performers - As of August 2025, only 95 stock strategy private equity products achieved positive excess returns for eight consecutive months, representing about 3% of the total [2]. - Among private equity firms with over 10 billion in assets, 46 products achieved positive excess returns for eight consecutive months, all of which were quantitative products, with an average excess return of 0.63% in August and 17.91% year-to-date [3]. Group 4: Top Performers by Asset Size - In the 20-100 billion category, 14 products achieved positive excess returns for eight consecutive months, with an average excess return of 1.83% in August and 22.48% year-to-date [7]. - The top three products in this category were "New Thinking Multi-Strategy 3", "Pansong Micro-Cap Index Enhanced 1", and "Giraffe 7", with year-to-date excess returns of ***% [11]. Group 5: Small and Emerging Firms - In the 5-20 billion category, 13 products achieved positive excess returns for eight consecutive months, with an average excess return of 5.34% in August and 57.58% year-to-date [13]. - The leading product in the 0-5 billion category was "Zijin Yunsong", achieving a year-to-date excess return of ***% [18].

Core Viewpoint - The article highlights the strong performance of quantitative long products from billion-level private equity firms in the A-share market since August, with average returns significantly increasing for various strategies [1]. Summary by Category Quantitative Stock Selection Products - As of August 22, 2025, there are 234 quantitative long products under billion-level private equity firms, with an average return of ***% this year [1]. - The top-performing products in the quantitative stock selection category have shown an average return close to ***% [1]. Top 10 Products in the "CSI 1000 Index Enhancement" Category - The article lists the top 10 products in the "CSI 1000 Index Enhancement" category, with the leading product being "Mengxi CSI 1000 Quantitative No. 5 A-Class" managed by Li Ji from Mengxi Investment [4]. - Other notable products include "Qianyan Liuhe No. 6 1000 Enhancement B-Class" and "Mingfa Quantitative Small Cap Enhancement No. 1 B-Class" [4]. Top 10 Products in the "CSI 300 Index Enhancement" Category - The leading product in the "CSI 300 Index Enhancement" category is "Jiu Zhang Huan Fang CSI 300 Quantitative Multi-Strategy No. 1," managed by Xu Jin from Ningbo Huan Fang Quantitative [7]. - Other top products include "Mingxuan Stable Growth No. 2" and "Zhengding CSI 300 Index Enhancement No. 1 B-Class" [7]. Top 10 Products in the "CSI 500 Index Enhancement" Category - The article provides a list of the top products in the "CSI 500 Index Enhancement" category, highlighting the competitive performance of various funds [10]. Top 10 Products in the "Other Index Enhancement" Category - The article also details the top products in the "Other Index Enhancement" category, showcasing the diversity of strategies employed by different private equity firms [14]. Notable Firms and Strategies - Mengxi Investment has established a strong reputation with its quantitative strategies, leveraging a team with significant academic backgrounds in quantitative finance [16]. - Ningbo Huan Fang Quantitative has also gained recognition for its high returns, particularly in the CSI 300 Index Enhancement category [19].