IT服务板块1月12日涨7.76%，天润科技领涨，主力资金净流入43.39亿元

Group 1 - The IT services sector experienced a significant increase of 7.76% on January 12, with Tianrun Technology leading the gains [1] - The Shanghai Composite Index closed at 4165.29, up 1.09%, while the Shenzhen Component Index closed at 14366.91, up 1.75% [1] - Notable stocks in the IT services sector included Tianrun Technology, which rose by 30.00% to a closing price of 34.93, and Jingtu Measurement and Control, which increased by 29.99% to 130.16 [1] Group 2 - The IT services sector saw a net inflow of 4.339 billion yuan from institutional investors, while retail investors experienced a net outflow of 1.772 billion yuan [2] - The trading volume for Han'de Information reached 2.7024 million shares, with a closing price of 29.39, reflecting a 20.01% increase [1][2] - The overall market sentiment was positive, as evidenced by the substantial trading volumes and price increases across multiple stocks in the IT services sector [1][2]