Stock futures tumbled after President Trump's latest tariff threats, including a warning that a 50% tariff on EU-made goods would take effect on June 1. Meanwhile, bond yields fell, and

the U.S. dollar weakened against most major rivals, but trimmed a loss versus the euro. The yield on the 10-year Treasury note was off by 8 basis points, bringing to 4.453%, while the U.S.

dollar was off by 0.6% at 99.40, having pared some of its earlier decline.