US Dollar Bulls Await FOMC as Japan's MOF Faces an Intervention Dilemma

Traders are watching the 152.50-153.00 band closely. A break above 153 without intervention would signal that the MOF's tolerance level has shifted higher. That would open the door to 155. A sharp move above 153 that triggers a BOJ rate check or direct intervention would create a different setup: a quick snapback toward 150, followed by a slow grind higher as the rate differential reasserts itself.

The carry trade remains the structural anchor. The US-Japan 10-year yield spread sits near 350 basis points. Until that narrows meaningfully – either through Fed cuts or BOJ hikes – any yen rally driven by intervention is likely to be short-lived. The BOJ's July rate hike did not change the calculus. The market priced it as a one-off, not the start of a tightening cycle.

For dollar bulls, the FOMC is the catalyst. For yen bears, the MOF is the speed bump. The next 48 hours will determine which force wins the near-term tug-of-war. The FOMC decision is due Wednesday at 2 p.m. ET, followed by Chair Powell's press conference at 2:30 p.m. ET. Japan's intervention window is open 24 hours a day. The MOF typically acts during Tokyo trading hours.

A hawkish Fed and no intervention would be the cleanest signal for a dollar breakout. A dovish Fed or a surprise BOJ rate check would reset the trade. Either way, the setup is binary, and the levels are tight.