Zheng Xing Xing Ye Ri Bao·2025-08-13 08:37Market Performance - On August 13, the oil service engineering sector rose by 0.75% compared to the previous trading day, with CNOOC Development leading the gains [1] - The Shanghai Composite Index closed at 3683.46, up 0.48%, while the Shenzhen Component Index closed at 11551.36, up 1.76% [1] Individual Stock Performance - CNOOC Development (600968) closed at 4.15, with a gain of 3.23% and a trading volume of 1.7567 million shares, amounting to a transaction value of 730 million yuan [1] - Other notable stocks included PetroChina Oilfield Services (600871) with a closing price of 2.05, up 0.99%, and Zhongman Petroleum (619609) at 19.79, up 0.61% [1] - Conversely, stocks like Renji Co. (002629) and Zhongyou Engineering (600339) saw slight declines of 0.27% and 0.28%, respectively [1] Capital Flow Analysis - The oil service engineering sector experienced a net outflow of 122 million yuan from institutional investors, while retail investors saw a net inflow of 207 million yuan [2] - The overall capital flow indicates a mixed sentiment, with institutional investors pulling back while retail investors increased their positions [2] Detailed Capital Flow for Key Stocks - CNOOC Development had a net inflow of 49.2 million yuan from institutional investors, while retail investors contributed a net inflow of 6.55 million yuan [3] - In contrast, stocks like Renji Co. and Zhongyou Engineering faced net outflows from both institutional and retail investors, indicating weaker demand [3] - The data suggests that while some stocks are attracting retail interest, institutional investors are more cautious, leading to varied performance across the sector [3]