深夜突发！黄金价格暴跌200美元，银价跌幅超10%，贵金属多头遭集体坑杀！某全球大行爆仓传闻发酵，紧急否认：不是我

Core Viewpoint - The international precious metals market experienced a significant downturn, with gold and silver prices plummeting, attributed to a rumor regarding a "systemically important bank" facing a margin call and subsequent forced liquidation [1][3][4]. Price Movements - London gold spot price fell by $205 to around $4320, a decrease of 4.52% [2] - Silver prices dropped over 10%, with London silver at $71.139, down by $8.190 or 10.32% [2] - Platinum and palladium saw even steeper declines, with platinum down approximately 15% and palladium down 15.58% [1][2]. Margin Call Rumors - A rumor suggested that a major bank could not meet a $2.3 billion margin call, leading to its forced liquidation and takeover by U.S. federal regulators [3][4][6]. - The bank was reportedly a significant player in the silver futures market, holding substantial short positions [6]. Market Reactions - The Chicago Mercantile Exchange (CME) raised silver futures margin requirements again, aiming to curb excessive speculation [3][11]. - Analysts noted that the rapid price increase in silver was unsustainable, leading to a necessary correction, but the fundamental bullish outlook for silver remains intact [9][12]. Credibility of Rumors - The credibility of the bank liquidation rumor was questioned due to the lack of official announcements and the absence of any recent major bank failures recorded by the FDIC [7][8]. - Stress tests indicated that the potential for a bank failure was low, as major banks typically have sufficient liquidity to handle such pressures [8]. Regulatory Actions - The CME's decision to increase margin requirements is seen as a historical precedent for cooling market enthusiasm, similar to actions taken during previous market bubbles [11][12]. - The Shanghai Futures Exchange also implemented measures to adjust trading limits and margin requirements to guide investor behavior [11].