Zheng Xing Xing Ye Ri Bao·2025-10-31 08:48Core Insights - The refining and trading sector saw a slight increase of 0.12% on October 31, with Heshun Petroleum leading the gains [1] - The Shanghai Composite Index closed at 3954.79, down 0.81%, while the Shenzhen Component Index closed at 13378.21, down 1.14% [1] Sector Performance - Heshun Petroleum (603353) closed at 21.58, up 5.58% with a trading volume of 97,600 shares and a transaction value of 211 million yuan [1] - Hengtong Co. (603223) closed at 9.91, up 3.77% with a trading volume of 101,000 shares and a transaction value of 98.88 million yuan [1] - International Long (000819) closed at 18.07, up 3.26% with a trading volume of 96,800 shares and a transaction value of 173 million yuan [1] - Other notable performers included Runbei Aerospace (001316) up 2.57%, Bohai Chemical (600800) up 1.86%, and Wanbangda (300055) up 1.68% [1] Fund Flow Analysis - The refining and trading sector experienced a net inflow of 176 million yuan from main funds, while retail investors saw a net outflow of 85.98 million yuan [2] - Notable stocks with significant fund flow included Guanghui Energy (600256) which saw a net outflow of 2.23% [2]