Zheng Xing Xing Ye Ri Bao·2025-12-02 09:09Core Insights - The oil service engineering sector experienced a slight increase of 0.13% on December 2, with Haiyou Development leading the gains [1] - The Shanghai Composite Index closed at 3897.71, down 0.42%, while the Shenzhen Component Index closed at 13056.7, down 0.68% [1] Stock Performance - Haiyou Development (600968) closed at 3.86, up 1.58% with a trading volume of 596,000 shares and a transaction value of 228 million yuan [1] - Haiyou Engineering (600583) closed at 5.54, up 1.28% with a trading volume of 441,300 shares and a transaction value of 244 million yuan [1] - Other notable stocks include: - Dongsi Thought (601808) at 14.41, up 0.84% [1] - Zhongyou Engineering (600339) at 3.40, unchanged [1] - Beiken Energy (002828) at 12.18, down 0.49% [1] - Shihua Oil Service (600871) at 2.33, down 0.85% [1] - Tongyuan Petroleum (300164) at 6.05, down 1.31% [1] - Huibo Yin (002554) at 3.55, down 1.66% [1] - Zhongman Petroleum (603619) at 22.24, down 1.94% [1] - Bomai Ke (603727) at 15.35, down 2.17% [1] Capital Flow - The oil service engineering sector saw a net outflow of 210 million yuan from institutional investors, while retail investors contributed a net inflow of 248 million yuan [2][3] - Key stocks with significant capital flow include: - Tongyuan Petroleum (300164) with a net outflow of 40.06 million yuan from institutional investors [3] - Renji Co. (002629) with a net outflow of 33.28 million yuan from institutional investors [3] - Zhongman Petroleum (603619) with a net outflow of 26.94 million yuan from institutional investors [3] - Huibo Yin (002554) with a net outflow of 21.44 million yuan from institutional investors [3] - Haiyou Engineering (600583) with a net outflow of 20.98 million yuan from institutional investors [3]