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Yen extends losses as traders doubt BOJ’s rate-hike pace
Japan's currency slid for a third straight day despite the central bank delivering its highest interest rate in 31 years, as a stubborn yield gap with the US keeps carry traders firmly in control.
The Japanese yen dropped to around 157.70 per US dollar on September 22, falling 0.22% on the day and marking its third consecutive session of losses. The culprit: a growing sense among currency traders that the Bank of Japan simply can’t hike rates fast enough to close the gap with the rest of the world.
Just four days earlier, the BOJ raised its policy rate by 25 basis points to 1.25%, the highest level Japan has seen in 31 years. On paper, that sounds aggressive. In practice, the market shrugged.
A rate hike that felt like a whisper
The September 18 decision came via a 7-2 vote, with two board members dissenting in favor of keeping policy looser. That split sent a clear signal to traders: even inside the BOJ’s own ranks, there’s no consensus that aggressive tightening is the right call.
Governor Kazuo Ueda framed the move as the start of a “new phase” focused on preventing inflation from overshooting. He left the door open for back-to-back hikes if conditions warranted it.
The yen had rallied to a seven-month high earlier in September on expectations the BOJ would act. Once the hike landed, traders decided the pace wasn’t ambitious enough and started selling again.
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Markets are currently pricing in roughly a 30% probability that the BOJ will push rates to 1.5% at its October meeting.
The yield gap problem
The US Federal Reserve has maintained a hawkish posture, keeping American rates elevated. The result is a yield differential of approximately 275 basis points between the US and Japan.
As long as that 275-basis-point spread persists, traders have a structural incentive to borrow yen and invest in higher-yielding currencies. The BOJ’s rate hike on September 18 was its first in three months, which also underscored the glacial pace of tightening.
Intervention whispers and what to watch
Reports have surfaced suggesting the BOJ conducted a “rate check,” a procedure widely viewed as a precursor to direct intervention. Rate checks involve the central bank calling dealers to inquire about exchange rates, a move that functions as an implicit warning shot.