Zheng Xing Xing Ye Ri Bao·2026-01-21 09:08Group 1 - The coal mining sector experienced a decline of 1.77% on January 21, with Dayou Energy leading the drop [1] - The Shanghai Composite Index closed at 4116.94, up 0.08%, while the Shenzhen Component Index closed at 14255.12, up 0.7% [1] - Key stocks in the coal mining sector showed varied performance, with Jiangte Equipment rising by 4.11% and Dayou Energy falling by 8.31% [1][2] Group 2 - The coal mining sector saw a net inflow of 136 million yuan from institutional investors, while retail investors experienced a net outflow of 257 million yuan [2] - Major stocks like Shaanxi Coal and China Shenhua had significant net inflows from institutional investors, indicating potential interest despite overall sector decline [3] - The trading volume for Dayou Energy was 953,600 shares, with a transaction value of 649 million yuan, reflecting its significant market activity despite the price drop [2][3]