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Yen Slides Past 158 Per Dollar as Rate-Hike Odds Fade

FXStreet2 min read6 sources

Why did the yen fall past 158 per dollar?

Japanese yen (USD/JPY) weakened 0.5% to about 158.4 per dollar on Thursday after the Bank of Japan's September meeting summary cooled bets on an October rate hike.

Key numbers

USD/JPY, Thursday~158.4+0.5%
BOJ policy rate1.25%raised Sept 18, 7-2 vote
Tokyo core inflation, Sept2.7%vs 2.4% forecast, 1.8% in Aug
Yen low in late July~164 per $weakest in ~4 decades (per [2])
Yen vs dollar this quarter+3.3%best in G10 (per [2])

What happened

Japanese yen (USD/JPY) weakened 0.5% to about 158.4 per dollar on Thursday after the Bank of Japan's September meeting summary cooled bets on an October rate hike. Traders roughly halved their bets on a rate rise this month and now expect the next one in December. Prime Minister Sanae Takaichi said her growth policies will restore confidence in the yen after the joint US-Japan yen buying fell short. On Friday the yen edged back below 158 after Tokyo inflation beat forecasts.

Why it matters

The Japanese yen's slide matters because a weaker yen makes imported goods costlier for Japanese families and companies, and Japan teamed up with the US to push it higher earlier this year. Higher interest rates tend to support a currency, so when the Bank of Japan looks slower to raise them, the yen can lose ground. With buying in the currency market not enough on its own, attention is shifting to interest rates and economic policy.

Who this affects

Marketbearish
Medium impact
Yen holders lose as each dollar buys more yen.
Companybearish
Medium impact
Takaichi's government faces pressure to prove its yen plan works.
Competitorsneutral
Low impact
Euro fell more than the yen against the dollar this week.
Industrymixed
Medium impact
Exporters tend to gain; importers and households pay more.

Japanese Yen vs Euro, British Pound, Swiss Franc

Japanese yenUSD/JPY-0.30%
EuroEUR/USD-1.07%
British poundGBP/USD-0.19%
Swiss francUSD/CHF-0.09%

As of 2026-10-02

How we got here

  1. Yen falls near 164 per dollar, its weakest in about four decades, before US-Japan buying.

  2. Bank of Japan raises its rate to 1.25% in a 7-2 vote.

  3. BOJ meeting summary halves October hike bets; yen slides past 158 per dollar.

  4. Tokyo core inflation hits 2.7%; yen edges back below 158.

What to watch

  • US September jobs report, expected to show about 90,000 new jobs, could move the dollar and yen.2026-10-02
  • Fed meeting, where markets see roughly a one-in-three chance of a rate hike.2026-10-28
  • Bank of Japan December meeting, when analysts expect its next rate rise.2026-12

Educational content only. Not investment advice.

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