Traders Brace as Trump Weekend Gambits Land Outside Market Hours

Donald Trump floods the zone at all hours, but his latest reversal on Iran makes one thing clear: he makes many of his biggest gambits when US markets are dark.

Trump announced Saturday night that Iran had 48 hours to reach a deal or face a wave of devastating attacks on utilities and other infrastructure, before calling it off just after 7 a.m. Monday. The round-trip cauterized a potential selloff and eased pressures on oil markets, albeit temporarily. And just minutes after Thursday’s closing bell, Trump once again extended his deadline to April 6.

As a consequence, traders across the ...