Core Viewpoint - The recent implementation of quantitative trading regulations aims to enhance the precision of high-frequency trading supervision and impose strict constraints on abnormal trading, reshaping the market ecology and promoting the standardized development of the quantitative industry [2] Group 1: Quantitative Long Strategy Performance - The article highlights the performance of quantitative long products in the first half of the year, focusing on those with assets under management exceeding 500 million [2] - The top-performing quantitative long products are categorized by strategies such as quantitative stock selection, CSI 500 index enhancement, CSI 1000 index enhancement, and CSI 300 index enhancement [2] Group 2: Quantitative Stock Selection - The quantitative stock selection strategy relies on mathematical models and statistical analysis to avoid subjective emotional interference, allowing for the processing of data from thousands of stocks [3] - As of June 30, 2025, the average excess return of 144 quantitative stock selection products was ***%, with the top three products being "Zeyuan Shen Sheng No. 7 A Class" from Shenzhen Zeyuan, "Jiuming Qianliang No. 1" from Jiuming Investment, and "Liangying Risheng Exclusive No. 1 A Class" from Liangying Investment [3][5] Group 3: CSI 500 Index Enhancement - The CSI 500 index enhancement products aim to seek additional returns beyond the index through quantitative methods [6] - As of June 30, 2025, the average excess return of 139 CSI 500 index enhancement products was ***%, with the top three being "Xinhong CSI 500 Index Enhancement No. 2 A Class" from Xinhong Tianhe, "Xiangmu Yongfu" from Xiangmu Asset, and "Abama Ruixue Fengnian Quantitative Selection" from Abama Investment [6][8] Group 4: CSI 1000 Index Enhancement - The CSI 1000 index enhancement products focus on actively managing investments to exceed the index benchmark [9] - As of June 30, 2025, the average excess return of 86 CSI 1000 index enhancement products was ***9%, with the top three being "Xiangmu Wangjiang No. 2" from Xiangmu Asset, "Anzi Geek CSI 1000 Enhancement No. 1 A Class" from Anzi Fund, and "Zizhu No. 2" from Tiange Investment [9][10] Group 5: CSI 300 Index Enhancement - The CSI 300 index enhancement products aim to achieve excess returns through quantitative stock selection and derivative tools [12] - As of June 30, 2025, the average excess return of 24 CSI 300 index enhancement products was ***%, with the top three being "Jiu Zhang Huan Fang CSI 300 Quantitative Multi-Strategy No. 1" from Ningbo Huan Fang, "Mingcong Stable Growth No. 2" from Mingcong Investment, and "Tote CSI 300 Index Enhancement No. 2" from Tote (Sanya) Private [12][16] Group 6: Other Index Enhancements - Other index enhancement products cater to high-net-worth individuals, including various indices such as the National Securities 2000, Sci-Tech Innovation Board Index, and others [17] - As of June 30, 2025, the average excess return of 52 other index enhancement products was ***%, with the top three being "Liangchuang Quantitative Beizheng Stock Selection No. 1 A Class" from Liangchuang Investment, "Shengguanda Stock Quantitative No. 2 C Class" from Shengguanda, and "Longqi Technology Innovation Selection No. 1 C Class" from Longqi Technology [17][20]