The US Dollar Index (DXY) tumbles on Thursday as a sharp surge in the Japanese Yen (JPY) fuels speculation that Japanese authorities intervened to support the currency. USD/JPY plunged nearly 480 pips, falling below the psychological 160 mark and dragging the Greenback lower across the board. The Core Personal Consumption Expenditures (PCE) Price Index rose 0.1% in June, down from 0.3% in May and below the 0.2% consensus forecast. The hold was widely expected, but the decision still carried a hawkish edge, with three policymakers voting for a 25-basis-point rate hike. Following the PCE release, traders trimmed their bets on a September rate hike.