尾盘，瞬间涨停！

Group 1 - The core viewpoint of the articles highlights the strong performance of the non-ferrous and semiconductor sectors, with gold-related ETFs and chip-related ETFs leading in gains on January 21 [1][4][5] - The ShiHua ETF (159731) experienced a sudden surge, hitting the daily limit, which is suspected to be a result of a trading error [1][5] - The market saw significant net outflows from ETFs, totaling nearly 500 billion yuan on January 20, with a cumulative outflow of 903 billion yuan over the first two trading days of the week [3][12] Group 2 - The gold stock theme ETFs showed notable gains, with the leading ETFs reporting increases of 6.33% to 6.26% on January 21, driven by geopolitical uncertainties and a shift towards risk aversion [5][6] - The semiconductor sector is experiencing a bullish trend, with strong performance in storage and computing chips, leading to price increases across the supply chain due to rising AI demand and supply chain bottlenecks [7] - The banking sector and consumer goods faced declines, with multiple bank ETFs showing negative performance, indicating a shift in market sentiment [8][9] Group 3 - The trading activity in broad-based ETFs remained active, with the HuShen 300 ETF (510300) achieving a transaction volume of 23.208 billion yuan, and several other broad-based ETFs exceeding 10 billion yuan in trading volume [2][10][11] - Several ETFs disclosed their fourth-quarter reports for 2025, including the Securities ETF from Guolianan and the 1000 Enhanced ETF from Tianhong [14]