Yen Slides Despite Bank of Japan Rate Hike as Dovish Signals Emerge

The Japanese yen fell on Friday even after the Bank of Japan raised interest rates to their highest level in 31 years, as a divided policy board and soft inflation data tempered expectations for further aggressive tightening. Meanwhile, the U.S. dollar held near a seven-week high, supported by the Federal Reserve's hawkish monetary policy outlook.

BOJ Delivers 'Dovish' Hike

The Bank of Japan (BOJ) increased its benchmark policy rate by 25 basis points to 1.25%, a move that was widely anticipated by markets. However, the decision came with a 7-2 vote, with two policymakers dissenting in favor of keeping rates unchanged, which investors interpreted as a dovish signal.

Following the announcement, the yen weakened, with the USD/JPY pair rising 0.7% to nearly 157 yen. The split vote suggests a lack of consensus for a more rapid tightening cycle. "With the two most hawkish Board members set to depart next July, the composition of the Board will probably become even more dovish," analysts at Capital Economics noted. Markets are now awaiting comments from BOJ Governor Kazuo Ueda for further guidance on future policy.

Dollar Strength and Fed Outlook

The U.S. dollar remained firm, with the Dollar Index trading near 100.23, as investors priced in the possibility of further rate increases from the Federal Reserve. The Fed raised its policy rate by 25 basis points to a range of 3.75%-4.00% on Wednesday and signaled one additional increase may be warranted this year.

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Market expectations reflect this hawkish stance. The probability of another quarter-point rate hike at the Fed's next meeting stood at 53%, according to CME Group's FedWatch tool. The prospect of higher U.S. interest rates continues to provide broad support for the greenback against other major currencies.

Mixed Performance in Asian Currencies

Broader Asian currency markets were mixed amid the competing influences of BOJ policy and a strong dollar. Softer-than-expected Japanese inflation data, with core consumer prices rising 1.7% in August, also did little to support the yen.

Elsewhere in the region:

• The Australian dollar (AUD/USD) gained 0.3%.
• The onshore Chinese yuan (USD/CNY) strengthened slightly, with the pair falling 0.2%.
• The South Korean won (USD/KRW) weakened, with the pair climbing 0.4%.
• The Singapore dollar and Indian rupee traded largely flat against the U.S. dollar.