新华财经北京10月17日电上海期货交易所17日发布通知称，经研究决定，自2025年10月21日（星期二） 收盘结算时起，交易保证金比例和涨跌停板幅度调整如下：黄金、白银期货合约的涨跌停板幅度调整为 14%，套保持仓交易保证金比例调整为15%，一般持仓交易保证金比例调整为16%。 | 品种 | | 现行标准(%) | | | 调整后标准(%) | | | --- | --- | --- | --- | --- | --- | --- | | | 涨跌 | 交易保证金 | | 涨跌 | 交易保证金 | | | | 停板 | 套保持仓 | -般持色 | 停板 | 套保持仓 | 一般持仓 | | 黄金 | 12 | 13 | 14 | 14 | 15 | 16 | | 白银 | 12 | 13 | 14 | 14 | 15 | 16 | （文章来源：新华财经） 如遇《上海期货交易所风险控制管理办法》第十三条规定情况，则在上述交易保证金比例、涨跌停板幅 度基础上调整。 ...

Market Closure Announcement - The major exchanges have announced the market closure schedule for the National Day and Mid-Autumn Festival in 2025, which will be from October 1 (Wednesday) to October 8 (Wednesday), with regular trading resuming on October 9 (Thursday) [2][4][5] - Additionally, weekends on September 28 (Sunday) and October 11 (Saturday) will also be non-trading days [2][4][5] Clearing and Settlement Arrangements - During the holiday period, clearing and settlement will be conducted according to the arrangements of China Securities Depository and Clearing Corporation Limited [2][4][5] - The Shenzhen Stock Exchange and Shanghai Stock Exchange have reiterated the importance of participants arranging their work accordingly [3][4][5] Hong Kong Stock Connect Services - The Shenzhen Stock Exchange has indicated that the Hong Kong Stock Connect services will not be available from October 1 to October 8, with services resuming on October 9 [7] - The clearing and settlement for Hong Kong Stock Connect transactions will also follow the arrangements of China Securities Depository and Clearing Corporation Limited [7] Trading System Testing - To ensure normal trading after the holiday, the Shanghai Stock Exchange will conduct a trading system joint debugging test on October 8 (Wednesday) from 9:15 to 12:00 [5]

Core Viewpoint - The Shanghai Futures Exchange has set the trading margin for aluminum alloy futures at 9% of the contract value, with a lower margin of 8% for hedging transactions, and established a price fluctuation limit of ±7%, which is doubled on the first trading day [1] Summary by Category - **Trading Margin** - The trading margin for aluminum alloy futures is established at 9% of the contract value [1] - For hedging transactions, the margin is set at 8% of the contract value [1] - **Price Fluctuation Limits** - The price fluctuation limit for aluminum alloy futures is ±7% [1] - On the first trading day, the price fluctuation limit is doubled [1]