"It's amazing when you consider the headlines just how calm the equity markets are, how they've taken things in their stride," said Ryan Detrick, senior market strategist at LPL Financial in Charlotte, North Carolina.

US stocks clawed back losses late on Wednesday as investors appeared to brush off geopolitical concerns after falling in the wake of US President Donald Trump's "fire and fury" warning to North Korea.

Bargain-seeking investors instead turned their focus to strength in the global economy and earnings toward the end of an active trading day.

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"There was some skittishness earlier but then some buyers stepped in," he said.

Investors had rushed to safe-haven assets after strongly worded exchanges between Washington and nuclear-armed North Korea late on Tuesday. US Secretary of State Rex Tillerson said he did not believe there was an imminent threat.