市场风偏下降叠加负伽马效应，贵金属波动率大幅放大

Investment Rating - The report maintains an "Overweight" rating for the non-ferrous metals sector [1]. Core Views - The non-ferrous metals sector saw a weekly increase of 3.37%, ranking it among the top performers across all primary industries. The precious metals segment surged by 18.02%, while small metals, energy metals, and new materials declined [1][14]. - The market is experiencing increased volatility in precious metals due to a decline in market risk appetite and negative gamma effects, leading to significant fluctuations in prices [1][4]. Summary by Sections Market Review - The Shanghai Composite Index fell by 0.44%, while the non-ferrous metals sector outperformed with a 3.37% increase, surpassing the index by 3.81 percentage points [14]. - Among the sub-sectors, precious metals rose by 18.02%, while small metals, energy metals, and new materials saw declines of 1.09%, 8.17%, and 5.12%, respectively [14]. Industrial Metals - Copper: The demand from downstream sectors is declining due to the Spring Festival effect, leading to a rise in global copper inventories. As of January 30, LME copper was priced at $13,071 per ton, down 0.44% week-on-week, while SHFE copper rose to 103,680 CNY per ton, up 2.31% [2][30]. - Aluminum: Prices fluctuated due to rising overseas natural gas prices. As of January 30, LME aluminum was priced at $3,136 per ton, down 1.20%, while SHFE aluminum was at 24,560 CNY per ton, up 1.11% [3][35]. - Zinc: Zinc prices increased, with LME zinc at $3,370 per ton, up 3.09%, and SHFE zinc at 25,835 CNY per ton, up 5.08% [38]. - Tin: Tin prices fell, with LME tin at $50,600 per ton, down 10.61%, and SHFE tin at 409,000 CNY per ton, down 4.79% [42]. Precious Metals - The report notes that precious metals are under pressure due to rising inflation data and the Federal Reserve's decision to maintain interest rates. As of January 30, COMEX gold was priced at $4,907.50 per ounce, down 1.52%, while SHFE gold was at 1,161.42 CNY per gram, up 4.10% [4][45]. - The nomination of Kevin Warsh as the new Federal Reserve Chairman has led to a decline in market risk appetite, exacerbating the volatility in precious metals [4][46]. Inventory Changes - Copper inventories have reached their highest levels since May 2025, with LME copper stocks at 175,000 tons, up 1.91% week-on-week [31]. - Aluminum inventories increased, with SHFE stocks rising by 10.01% to 216,800 tons [35]. - Zinc inventories decreased, with LME stocks at 110,000 tons, down 1.35% [38].