小金属板块10月21日涨1.07%，中钨高新领涨，主力资金净流出1942.08万元

Market Overview - The small metals sector increased by 1.07% on October 21, with Zhongtung High-tech 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] Individual Stock Performance - Zhongtung High-tech (000657) closed at 17.52, up 5.29% with a trading volume of 580,300 shares and a transaction value of 1.003 billion [1] - Aluminum Co. of China (000960) closed at 22.63, up 2.54% with a trading volume of 393,300 shares [1] - Yunnan Tin Company (002428) closed at 26.84, up 1.86% with a trading volume of 180,300 shares [1] - Zhongkuang Resources (002738) closed at 47.22, up 1.83% with a trading volume of 175,700 shares [1] - Shenghe Resources (600392) closed at 23.98, up 1.83% with a trading volume of 811,400 shares [1] - Other notable stocks include Zhangyuan Tungsten (002378), Tiangong Co. (920068), and Xiamen Tungsten (600549) with respective increases [1] Fund Flow Analysis - The small metals sector experienced a net outflow of 19.42 million from main funds, while retail funds saw a net inflow of 41.42 million [2] - The main funds showed varying net inflows for individual stocks, with Xiamen Tungsten (600549) receiving 10.7 million, while Zhongtung High-tech (000657) had a net inflow of 5.27 million [3] - Retail investors showed a net outflow from several stocks, including Zhongtung High-tech and Zhongkuang Resources, indicating a shift in investor sentiment [3]