US stock futures slide as commodity rout rattles markets

Gold dropped as much as 6% and silver tumbled 10%, as commodity exchange CME Group boosted margin requirements for the precious metals ‌following a historic ‌plunge on Friday. The rout rippled across markets as leveraged investors were forced to unwind positions to meet margin calls.U.S.-listings of gold and ‌silver miners dropped in premarket trading. Newmont down 2.2%, while Barrick Mining and Kinross Gold dropped 2.8% and 3.2%, respectively.Hecla Mining and Coeur Mining slipped over 2.7% each.The metals ...