BOJ Faces Make-or-Break Moment for Yen Rally

The sharp yen rally of the past few months is at a critical juncture as investors await the Bank of Japan's policy decision on Friday. The BOJ has been under pressure to break free from its cautious rate-hiking path, but analysts warn that any disappointment could lead to a sharp reversal in the currency.

The yen surged 5% against the dollar at the start of this month after a sudden change in central bank rhetoric, with US Treasury Secretary Scott Bessent calling on the BOJ to 'do the right thing'. The currency has since climbed to a nearly seven-month high at 152.89 per dollar.

However, analysts say that risks are heavily skewed towards market disappointment, citing the possibility of a retreat back to 157 yen per dollar if the BOJ fails to meet expectations. Even if the central bank hikes rates, it will be difficult for them to be more hawkish than what the market expects, according to Masafumi Yamamoto, chief currency strategist at Mizuho Securities.

The market is pricing in a Fed hike on Wednesday as a near certainty, with rates expected to rise once per quarter over the next 12 months. This could cancel out the yen's gains and leave the currency vulnerable to further weakness against the dollar.