Yen Breaks Past 160 per Dollar, Underscoring Trading Difficulty

The break through 160 matters less as a level than as a failure of the signals traders have relied on: rate differentials, the usual anchor, are no longer explaining yen moves, and the rebound on intervention speculation shows how much of the price now depends on official action rather than market fundamentals. That is a structural problem for anyone with yen exposure, from corporates hedging to funds running carry. The open question is whether intervention can keep anchoring the currency while BOJ tightening and capital outflows pull in opposite directions.