Zheng Xing Xing Ye Ri Bao·2026-01-30 09:00Market Overview - The professional engineering sector experienced a decline of 0.28% on January 30, with the leading drop attributed to Tongguan Mining Construction [1] - The Shanghai Composite Index closed at 4117.95, down 0.96%, while the Shenzhen Component Index closed at 14205.89, down 0.66% [1] Stock Performance - Notable gainers in the professional engineering sector included: - Baicheng Co., Ltd. (601133) with a closing price of 18.55, up 10.02% and a trading volume of 477,900 shares [1] - Roman Co., Ltd. (605289) at 80.41, up 10.00% with a trading volume of 114,100 shares [1] - Shenghui Integration (603163) at 110.85, up 8.68% with a trading volume of 66,900 shares [1] - Significant decliners included: - Tongguan Mining Construction (920019) at 24.02, down 14.43% with a trading volume of 163,800 shares [2] - China Aluminum International (601068) at 6.07, down 6.62% with a trading volume of 825,000 shares [2] Capital Flow - The professional engineering sector saw a net outflow of 123 million yuan from institutional investors and 247 million yuan from speculative funds, while retail investors contributed a net inflow of 370 million yuan [2] - Detailed capital flow for selected stocks indicated: - Baicheng Co., Ltd. (601133) had a net inflow of 311 million yuan from institutional investors, while speculative funds saw a net outflow of 172 million yuan [3] - Huadian Technology (601226) experienced a net inflow of 134 million yuan from institutional investors, with a net outflow of 42.43 million yuan from speculative funds [3]