白银有色，西部黄金逆势涨停，有色金属ETF基金（516650）大幅回调或迎布局机会

Group 1 - The three major indices experienced a collective pullback, with technology sectors such as optical modules and chips leading the decline, while gold concept stocks showed relative resilience [1] - The Nonferrous Metals ETF (516650) fell by 1.76%, with holdings like silver and Western Gold hitting the daily limit up, while stocks such as Shenghe Resources and Huayou Cobalt saw significant declines [1] - The Gold Stocks ETF (159562) decreased by 1.18%, with holdings like Shenyu Co., Shandong Gold, and Tongling Nonferrous Metals facing notable drops [1] Group 2 - Various industry associations have recently issued "anti-involution" initiatives, with the China Nonferrous Metals Industry Association's lithium division calling for resistance against "involutionary" competition and promoting upstream and downstream collaboration [1] - Market expectations indicate that the "anti-involution" efforts will intensify in the second half of the year, with industries such as steel, nonferrous metals, building materials, and photovoltaics likely to see a reconfiguration of supply dynamics [1] - Hu Yuwei, Chief Analyst of Policy Research at CITIC Construction Investment Securities, believes that future policies will maintain a steady and orderly capacity reduction, further eliminating low-efficiency production capacity while enhancing demand-side management and moderately expanding domestic demand [1] Group 3 - The Nonferrous Metals ETF (516650) tracks the CSI segmented nonferrous metals industry theme index, focusing on industrial metals like gold, copper, and aluminum, as well as rare earths, tungsten, molybdenum, and energy metals like lithium and cobalt [2] - The weightings of various metals in the ETF are as follows: copper 29.6%, aluminum 14.4%, rare earths 14.0%, gold 13.5%, and lithium 7.1% [2]