The yen slid past 157 per dollar after the Bank of Japan raised interest rates to a 31-year high, as a split board vote convinced traders the central bank is in no rush to tighten further.
The BOJ lifted its policy rate by 25 basis points to 1.25% on September 18, the highest since 1995 and only three months after its previous hike, CNBC reported. Yet the currency, bonds and stocks all moved the opposite way textbooks predict: the yen weakened, the 10-year government bond yield slipped and the Nikkei 225 gained 1.5%.
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Two Dissenters Spoil the Hawkish Message
Markets focused on the 7-2 board split, with two members voting to hold rates steady. The dissent surprised trading desks and signalled the bank may not press ahead aggressively.
"The two dissenting votes in favour of keeping rates unchanged came as a surprise," Hirofumi Suzuki, chief FX strategist at Sumitomo Mitsui Banking Corporation, told CNBC. The hike also arrived without an updated outlook report, which limited the BOJ's ability to reinforce a hawkish message through fresh forecasts, said State Street strategist Masahiko Loo.
Governor Kazuo Ueda said underlying inflation was "quite close to 2%" and did not rule out a 50-basis-point step at a future meeting, but offered no promise of steady tightening. Core inflation actually eased to 1.7% in August from 1.8% in July.
Rate Gap Still Rules USD/JPY
For FX traders, the message is simple: the wide rate gap with the United States still drives the pair. With the Fed also lifting rates this month, dollar yield keeps pulling capital away from the yen despite the BOJ's move.
Some desks warn a run toward 160 could invite government intervention to defend the currency, a threat that now hangs over every fresh low in the yen.
What It Means for Asian FX
A weak yen complicates life for regional central banks. Bank Negara Malaysia has held its overnight policy rate at 2.75% and describes the economy as being in a sweet spot, but persistent dollar strength plus a soft yen can pressure Asian currencies as capital rotates toward higher-yielding dollar and yen positions.
What to Watch Next
- October 29 to 30 meeting: the next decision comes with a fresh outlook report, the real test of BOJ resolve
- The 160 line: intervention chatter grows with each leg weaker in USD/JPY
- US data and Fed speakers: the dollar leg of the pair matters as much as anything Ueda says