Dollar’s Worst Week Since May Comes With US ‘Policy Nightmare’

The dollar notched its worst week since May, fueling gains in the yen and other global currencies after a week of unpredictable US policymaking that rattled financial markets.

The Bloomberg Dollar Spot Index tumbled 0.7% on Friday and is down 1.6% on the week, its worst performance in about eight months. The yen and the British pound were the best performers in the Group of 10 on the day. The yen spiked 1.7% to the highest since December as risks of intervention rose.