Zheng Xing Xing Ye Ri Bao·2025-12-31 09:07Group 1 - The professional engineering sector increased by 0.41% on December 31, with Zhitex New Materials leading the gains [1] - The Shanghai Composite Index closed at 3968.84, up 0.09%, while the Shenzhen Component Index closed at 13525.02, down 0.58% [1] - Zhitex New Materials saw a closing price of 11.18, with a rise of 8.97%, and a trading volume of 238,800 shares, amounting to a transaction value of 258 million yuan [1] Group 2 - The professional engineering sector experienced a net outflow of 4.46 million yuan from institutional funds, while retail investors saw a net inflow of 17.18 million yuan [2] - The stock with the highest net inflow from institutional funds was Zhitex New Materials, with 51.47 million yuan, representing 19.94% of its trading volume [3] - Hangxiao Steel Structure had a significant net outflow of 96.36 million yuan from institutional funds, accounting for 14.13% of its trading volume [3]