Zheng Xing Xing Ye Ri Bao·2025-12-22 09:08Core Viewpoint - The oil service engineering sector experienced a slight increase of 0.42% on December 22, with Junyou Co., Ltd. leading the gains. The Shanghai Composite Index closed at 3917.36, up 0.69%, while the Shenzhen Component Index closed at 13332.73, up 1.47% [1]. Group 1: Market Performance - The oil service engineering sector stocks showed varied performance, with Junyou Co., Ltd. closing at 7.47, up 1.91%, and a trading volume of 127,700 shares, amounting to approximately 94.65 million yuan [1]. - Other notable performers included Zhongman Petroleum at 22.38, up 1.82%, and Tongyuan Petroleum at 5.50, up 1.48%, with trading volumes of 82,800 shares and 479,600 shares respectively [1]. - The overall trading volume for the oil service engineering sector was significant, with total transactions reaching billions of yuan across various stocks [1]. Group 2: Capital Flow - The oil service engineering sector saw a net inflow of 10.06 million yuan from institutional investors, while retail investors experienced a net outflow of 12.65 million yuan [2]. - The capital flow data indicates that major stocks like Tongyuan Petroleum and Renji Co., Ltd. had significant net inflows from institutional investors, while retail investors showed a tendency to withdraw funds [3]. - Specific stocks such as Junyou Co., Ltd. and Zhongman Petroleum had mixed capital flows, with institutional investors showing interest while retail investors pulled back [3].