上期所：调整金银铜等期货新上市合约交易保证金比例和涨跌停板幅度

Group 1 - The Shanghai Futures Exchange announced adjustments to the price fluctuation limits and trading margin ratios for various contracts, effective from February 9 [2][3] - For copper, aluminum, lead, zinc, and alumina contracts, the price fluctuation limit is set at 10%, with margin ratios of 11% for hedging positions and 12% for general positions [2] - The fluctuation limit for aluminum alloy, wire rod, and stainless steel contracts is adjusted to 8%, with margin ratios of 9% for hedging and 10% for general positions [2] - Nickel and tin contracts have a fluctuation limit of 12%, with margin ratios of 13% for hedging and 14% for general positions [2] - Gold contracts have a fluctuation limit of 17%, with margin ratios of 18% for hedging and 19% for general positions, while silver contracts have a limit of 20% and margin ratios of 21% for hedging and 22% for general positions [2] Group 2 - The fluctuation limit for rebar, hot-rolled coil, pulp, and coated paper contracts is set at 7%, with margin ratios of 8% for hedging and 9% for general positions [3] - Fuel oil, petroleum asphalt, and butadiene rubber contracts have a fluctuation limit of 9%, with margin ratios of 10% for hedging and 11% for general positions [3] - Adjustments to the fluctuation limits and margin ratios may occur based on the provisions of the Shanghai Futures Exchange Risk Control Management Measures [3]