- The report introduces the "Information Distribution Uniformity (UID) factor" as a stock selection factor, which is constructed using minute-level data of individual stocks to calculate daily high-frequency volatility[1][6] - The UID factor significantly outperforms traditional volatility factors in stock selection, even after removing the interference of commonly used market styles and industries, with an annualized ICIR of -3.17[1] - The performance of the UID factor from January 2014 to September 2025 includes an annualized return of 26.48%, annualized volatility of 9.88%, an information ratio (IR) of 2.68, a monthly win rate of 78.72%, and a maximum monthly drawdown of 6.05%[1][7][12] - In September 2025, the 10-group long portfolio of the UID factor in the entire A-share market had a return of 1.84%, the 10-group short portfolio had a return of 0.04%, and the 10-group long-short hedged portfolio had a return of 1.80%[1][11] - The construction process of the UID factor involves using minute-level price data to calculate the high-frequency volatility of individual stocks and then constructing the UID factor based on the uniformity of information distribution[1][6] - The report highlights that the UID factor, despite being a single factor, shows good stock selection ability and can be a valuable addition to the factor library[1][6]

证券研究报告·金融工程·金工定期报告 金工定期报告 20250806 信息分布均匀度 UID 选股因子绩效月报 20250731 2025 年 08 月 06 日 证券分析师 高子剑 执业证书：S0600518010001 021-60199793 gaozj@dwzq.com.cn 证券分析师 凌志杰 执业证书：S0600525040007 lingzhj@dwzq.com.cn 证券分析师 庞格致 执业证书：S0600524090003 panggz@dwzq.com.cn 相关研究 《"波动率选股因子"系列研究（二）： 换手率分布均匀度，基于高频波动率 的选股因子》 2020-09-01 《信息分布均匀度 UID 选股因子绩效 月报 20250430》 2025-05-07 东吴证券研究所 1 / 7 | 1. 信息分布均匀度 | UID 因子绩效回顾 4 | | --- | --- | | 2. 风险提示 | 6 | 金工定期报告 请务必阅读正文之后的免责声明部分 [Table_Tag] [Table_Summary] ◼ 信息分布均匀度 UID 因子多空对冲绩效（全市场）： 2014 年 1 月至 ...

证券研究报告·金融工程·金工定期报告 金工定期报告 20250507 信息分布均匀度 UID 选股因子绩效月报 20250430 东吴证券研究所 1 / 7 2025 年 05 月 07 日 证券分析师 高子剑 执业证书：S0600518010001 021-60199793 gaozj@dwzq.com.cn 证券分析师 凌志杰 执业证书：S0600525040007 lingzhj@dwzq.com.cn 证券分析师 庞格致 执业证书：S0600524090003 panggz@dwzq.com.cn 相关研究 《"波动率选股因子"系列研究（二）： 换手率分布均匀度，基于高频波动率 的选股因子》 2020-09-01 《信息分布均匀度 UID 选股因子绩效 月报 20250331》 2025-04-03 请务必阅读正文之后的免责声明部分 [Table_Tag] [Table_Summary] ◼ 信息分布均匀度 UID 因子多空对冲绩效（全市场）： 2014 年 1 月至 2025 年 4 月，信息分布均匀度 UID 因子在全体 A 股中，10 分组多空对 冲的年化收益率为 26.99%，年化波动为 9. ...