Zheng Xing Xing Ye Ri Bao·2025-10-21 08:28Market Overview - On October 21, the oil service engineering sector rose by 3.82% compared to the previous trading day, with PetroChina Oilfield Services leading the gains [1] - The Shanghai Composite Index closed at 3916.33, up 1.36%, while the Shenzhen Component Index closed at 13077.32, up 2.06% [1] Stock Performance - PetroChina Oilfield Services (code: 600871) closed at 2.30, with a gain of 10.05% and a trading volume of 3.6965 million shares, amounting to a transaction value of 8.22 billion [1] - Huibo Yin (code: 002554) also saw a significant increase, closing at 3.52 with a 10.00% rise and a transaction value of 320 million [1] - Other notable performers included Tongyuan Petroleum (code: 300164) with a 6.51% increase, and Qianeng Hengxin (code: 300191) with a 5.10% increase [1] Capital Flow - The oil service engineering sector experienced a net inflow of 372 million from main funds, while retail funds saw a net outflow of 167 million [1] - The main funds' net inflow for PetroChina Oilfield Services was 193 million, accounting for 23.42% of its trading volume [2] - Huibo Yin had a main fund net inflow of 52.38 million, representing 16.36% of its trading volume, while retail funds showed a net outflow of 33.19 million [2]