突然，金银、股市全线跳水！

Core Viewpoint - The market experienced a significant downturn on February 17, with both precious metals and major stock indices declining sharply, indicating a cautious sentiment among investors amid geopolitical tensions and market holidays [1][3][4]. Group 1: Precious Metals - Spot gold prices fell below $4,900 per ounce, while silver prices dropped approximately 5% before recovering slightly [1][5]. - The decline in precious metals prices suggests lingering psychological effects from the market crash in late January, where gold and silver plummeted alongside stock markets [4][9]. Group 2: Stock Indices - Major U.S. stock index futures, including the Nasdaq, fell by 0.8%, the Nikkei 225 by 0.5%, and the FTSE China A50 by over 0.7% [3][8]. - The overall market showed a defensive posture due to a lack of positive catalysts and the impact of multiple market holidays, leading to reduced liquidity [4][9]. Group 3: Geopolitical Factors - Analysts are closely monitoring developments between the U.S. and Iran, particularly following recent military exercises by Iran, which are dampening market risk appetite [4][9]. - The upcoming second round of nuclear negotiations between Iran and the U.S. adds to the uncertainty, as previous threats from the U.S. regarding Iran's nuclear program loom large [4][9].