Gold tanked up to 4. 1% before trimming some of that drop. Silver crashed 11%, and copper sank 2. 9% as traders reportedly dumped metals to free up cash or cover losses elsewhere. Dow plunged 530 points, or 1. 1%, led by a brutal 11% drop in Cisco after weak guidance. The S&P 500 also fell 1. 1%. Nasdaq […]