President Donald Trump has given the $5.1-trillion-day currency market a shot in the arm. During his first 100 days in office, the US leader’s pronouncements on trade, taxes and foreign policy have tended to generate a burst of activity in the world’s biggest financial market.
CLS Group Holdings, which settles more than $1 trillion of currency trades daily, crunched the numbers and found examples of at least five days in which the administration caused the volume of transactions to leap.
“Irrespective of how successful President Trump is perceived to have been so far, he and his administration dominated news headlines during the

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