轨交设备板块2月4日涨1.81%，工大高科领涨，主力资金净流入2.96亿元

Market Performance - The rail transit equipment sector increased by 1.81% compared to the previous trading day, with Gongda Gaoke leading the gains [1] - The Shanghai Composite Index closed at 4102.2, up 0.85%, while the Shenzhen Component Index closed at 14156.27, up 0.21% [1] Individual Stock Performance - Gongda Gaoke (688367) closed at 38.45, up 5.63% with a trading volume of 46,200 shares and a transaction value of 172 million yuan [1] - Dinghan Technology (300011) closed at 8.64, up 3.10% with a trading volume of 296,500 shares and a transaction value of 261 million yuan [1] - China CNR (601766) closed at 6.48, up 2.86% with a trading volume of 2.8144 million shares and a transaction value of 1.806 billion yuan [1] - Shenzhou Gaotie (000008) closed at 3.00, up 2.74% with a trading volume of 537,300 shares and a transaction value of 160 million yuan [1] - Other notable stocks include Times Electric (688187) up 1.78% and China Railway Materials (000927) up 1.77% [1] Capital Flow Analysis - The rail transit equipment sector saw a net inflow of 296 million yuan from institutional investors, while retail investors experienced a net outflow of 143 million yuan [2] - Major stocks like China CNR had a net inflow of 3.30 billion yuan from institutional investors, but a net outflow of 1.38 billion yuan from retail investors [3] - Shenzhou Gaotie had a net inflow of 17.2 million yuan from institutional investors, with retail investors also experiencing a net outflow [3]