芝商所出手，上调金属品种履约保证金

Group 1 - The core viewpoint of the articles indicates that major exchanges, including CME Group, are raising margin requirements for various metal futures due to increased market volatility and concerns over price fluctuations in the precious metals market [2][5][7] - CME Group announced on December 26 that it will increase the margin requirements for gold, silver, lithium, and other metal futures after market close on December 29, reflecting deep concerns about abnormal volatility in the precious metals market [2][5] - The margin adjustments are based on the CME SPAN system, which objectively calculates the maximum potential loss of investment portfolios under adverse conditions, leading to differentiated margin standards for various products [5][6] Group 2 - The margin for COMEX 100-ounce gold futures will increase from $20,000 and $22,000 to $22,000 and $24,200, representing a 10% increase, while the margin for COMEX 5000-ounce silver futures will see an increase of over 13% [7] - Palladium futures, which have the lowest liquidity, will experience the highest margin increase of 20%, attributed to significant supply gaps and poor liquidity [7] - The adjustments reflect a broader trend in the market, with domestic futures exchanges also raising margin requirements for silver, gold, lithium carbonate, platinum, and palladium ahead of the New Year holiday [8][9]