Yen Soars on Hawkish BOJ Signals, Dollar Plunges

The US dollar took its sharpest single-day decline in over two weeks on Thursday, retreating from recent peaks as the yen surged to a one-month high and global bond yields paused.

The U.S. Dollar Index fell by 0.4%, marking its worst performance since August 19th. This pullback provided modest relief across major currency pairs, allowing the euro to inch up 0.16% to $1.1600, while the Aussie dollar traded flat at $0.7140 following solid domestic trade and growth metrics.

The Japanese yen jumped 1% to touch 157.19 per dollar, its highest level in a month. This sudden velocity and timing of the move eerily mirrored previous clandestine rounds of official currency intervention by the Ministry of Finance.

Market participants noted that the sharp appreciation was not driven by Tokyo tapping its foreign exchange reserves but rather an aggressive hawkish repricing of Bank of Japan monetary policy expectations.