软件开发板块9月8日涨0.7%，数字认证领涨，主力资金净流出18.1亿元

Market Overview - On September 8, the software development sector rose by 0.7% compared to the previous trading day, with digital certification leading the gains [1] - The Shanghai Composite Index closed at 3826.84, up 0.38%, while the Shenzhen Component Index closed at 12666.84, up 0.61% [1] Top Performers in Software Development Sector - Digital Certification (300579) closed at 37.13, up 8.03%, with a trading volume of 150,900 shares and a turnover of 549 million yuan [1] - Dipu Technology (300768) closed at 18.94, up 7.98%, with a trading volume of 223,100 shares and a turnover of 418 million yuan [1] - Xinan Century (688201) closed at 16.19, up 5.82%, with a trading volume of 299,800 shares and a turnover of 478 million yuan [1] - Keda Xunfei (002230) closed at 52.70, up 5.63%, with a trading volume of 1,118,200 shares and a turnover of 5.857 billion yuan [1] - Information Development (300469) closed at 71.35, up 4.15%, with a trading volume of 187,900 shares and a turnover of 1.309 billion yuan [1] Underperformers in Software Development Sector - Tonghuashun (300033) closed at 343.60, down 4.95%, with a trading volume of 189,700 shares and a turnover of 653.4 million yuan [2] - Keda Automation (831832) closed at 28.81, down 3.09%, with a trading volume of 96,400 shares and a turnover of 288 million yuan [2] - Dameng Data (688692) closed at 252.90, down 1.98%, with a trading volume of 19,200 shares and a turnover of 486 million yuan [2] Capital Flow Analysis - The software development sector experienced a net outflow of 1.81 billion yuan from institutional investors, while retail investors saw a net inflow of 859 million yuan [2][3] - Notable net inflows from retail investors were observed in Keda Xunfei (3841.08 million yuan) and Information Development (901.14 million yuan) [3] - High net outflows from institutional investors were noted in Keda Xunfei (-200 million yuan) and Xinan Century (-8839.18 million yuan) [3]