Copper prices jumped to all-time highs after President Donald Trump said he was putting a 50% tariff on copper imports. Stocks of copper mining companies also rose.“I believe the tariff on copper, we’re going to make it 50%,

Wall Street on Tuesday fluctuated just under record levels to end slightly lower, as uncertainty over trade developments puts pressure on sentiment a day after a broad sell-off. The benchmark S&P 500 (SP500) seesawed and closed -0.

World shares are mostly higher, with financial markets shrugging off U.S. tariff pressures on its trading partners.