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US copper futures plunged about 20% in an hour after the White House cancelled a planned 50% tariff on refined copper imports, focusing instead on semi-finished goods. Silver gains for July were trimmed as copper's shock spilled over into precious metals.
The reversal of a major tariff shows how quickly trade policy can reprice commodities; for feed buyers the effect is mostly through metals and trade-policy sentiment rather than feed grains.
bullionvault.comAdrian Ash2025年7月31日在过去 13 次中性的贸易事件之后，美元(广义) 在 5 个交易日内中位数变动 -0.3%（31% 上涨；中间一半区间为 -0.7% 至 +0.1%），20 个交易日内为 -0.6%。
各商品基准价相对事件前最后收盘价的变动。历史数据汇总同类过往事件；仅描述已发生的情况，不代表未来走势。不构成投资建议。
