Zheng Xing Xing Ye Ri Bao·2026-01-20 09:00Group 1 - The oil service engineering sector increased by 0.56% on January 20, with China Oil Engineering leading the gains [1] - The Shanghai Composite Index closed at 4113.65, down 0.01%, while the Shenzhen Component Index closed at 14155.63, down 0.97% [1] - Key stocks in the oil service engineering sector showed varied performance, with China Offshore Engineering closing at 3.56, up 1.71%, and PetroChina Oilfield Services at 2.33, up 0.87% [1] Group 2 - The oil service engineering sector experienced a net outflow of 164 million yuan from institutional investors, while retail investors saw a net inflow of 222 million yuan [2] - The trading volume and turnover for key stocks in the sector varied, with China Offshore Engineering having a turnover of 159 million yuan and China Oilfield Services at 365 million yuan [2] - The net inflow and outflow of funds for individual stocks showed significant differences, with China Oil Engineering having a net inflow of 5.71 million yuan from institutional investors [3]