规模最大的商品期货ETF——有色ETF大成(159980)波动控制能力更优，机构研判铜铝短期调整不改中期向好

Group 1 - The core viewpoint of the articles indicates a divergence in the non-ferrous metal sector, with significant declines in stock-based non-ferrous ETFs and leading stocks, while commodity-based ETFs like Dachen (159980) show stronger volatility control and less impact from market sentiment [1] - As of January 30, Dachen ETF (159980) experienced a net inflow of 67.58 million yuan, with a total of 395 million yuan over the last five trading days, reaching a new high in both scale at 8.755 billion yuan and shares at 3.908 billion [1] - The adjustment in the sector is influenced by the significant pullback in precious metals, but the fundamental support logic for industrial metals like copper and aluminum remains intact [2] Group 2 - In the short term, copper and aluminum prices are expected to have limited downside due to solid supply-demand fundamentals, with potential price increases driven by post-holiday restocking and other catalysts [2] - The macroeconomic environment shows that the Federal Reserve's pause in interest rate cuts and the nomination of a hawkish candidate for the next Fed chair may lead to short-term liquidity shocks, impacting copper prices [2] - The aluminum sector is likely to see an upward cycle due to the "aluminum replacing copper" trend in appliances and stable demand growth, with potential shortages in electrolytic aluminum this year [3] Group 3 - The current volatility in the market is primarily due to risk release at the trading level, but the core logic of "rigid supply + energy transition demand" for industrial metals remains unchanged [4] - Dachen ETF (159980.SZ) is positioned to capture overall opportunities in the sector, with its underlying assets linked to various non-ferrous metal futures [4]