Group 1 - As of September 1, the metal cobalt concept increased by 3.05%, ranking 6th among concept sectors, with 31 stocks rising, including Zhejiang Fu Holdings and China Ruilin hitting the daily limit, while Hanrui Cobalt and Luoyang Molybdenum saw significant gains of 10.14%, 9.47%, and 8.25% respectively [1] - The metal cobalt sector experienced a net outflow of 530 million yuan in main funds today, with 13 stocks receiving net inflows, and 6 stocks seeing inflows exceeding 50 million yuan, led by Huayou Cobalt with a net inflow of 489 million yuan [2] - The top net inflow rates were recorded for China Ruilin, Zhejiang Fu Holdings, and Hainan Mining, with rates of 30.50%, 12.57%, and 7.87% respectively [3] Group 2 - The top gainers in the metal cobalt sector included Huayou Cobalt with a 4.52% increase, Luoyang Molybdenum at 9.47%, and Zhejiang Fu Holdings at 10.08% [3] - The stocks with the largest net outflows included Beikong Technology at -3.94%, Dadi Bear at -2.63%, and Green Beauty at -1.21% [5] - The overall performance of the metal cobalt sector reflects a mixed sentiment, with significant gains in some stocks while others faced notable declines [1][5]