Zheng Xing Xing Ye Ri Bao·2026-02-02 09:22Market Overview - The oil service engineering sector experienced a significant decline of 7.68% on February 2, with Keli Co., Ltd. leading the drop [1] - The Shanghai Composite Index closed at 4015.75, down 2.48%, while the Shenzhen Component Index closed at 13824.35, down 2.69% [1] Individual Stock Performance - Keli Co., Ltd. (stock code: 920088) saw a closing price of 42.50, down 17.95% with a trading volume of 107,400 shares and a transaction value of 472 million [1] - Tongyuan Petroleum (stock code: 300164) closed at 11.05, down 14.21%, with a trading volume of 2,407,900 shares and a transaction value of 2.698 billion [1] - Potential Energy Holdings (stock code: 300191) closed at 27.31, down 12.83%, with a trading volume of 369,800 shares and a transaction value of 1.038 billion [1] - Other notable declines include Zhongman Petroleum (down 10.00%), Zhun Oil Co., Ltd. (down 9.98%), and PetroChina Oilfield Services (down 9.97%) [1] Capital Flow Analysis - The oil service engineering sector experienced a net outflow of 752 million from institutional investors and 157 million from speculative funds, while retail investors saw a net inflow of 909 million [1] - Specific stocks such as Keli Co., Ltd. had a net outflow of 543.96 million from institutional investors, indicating significant selling pressure [2] - Other stocks like PetroChina Oilfield Services and Beiken Energy also faced substantial net outflows from institutional and speculative investors, while retail investors showed interest in these stocks [2]