Yen Plunges on Rate Hike Uncertainty and Weakening Interventions

The yen has experienced its largest weekly decline in a month, as market participants speculate that either rate hikes or further official buying may be necessary to halt its downturn. The currency appreciated at around 159.15 per dollar this week, surrendering nearly half of the gains from interventions witnessed in late July and early August.

Backed by stronger GDP data, the U.S. dollar gained momentum against the euro and the sterling. However, the yen's depreciation reflects a familiar pattern from May's sell-off after official buying.

Mark Dowding, CIO for fixed income at RBC BlueBay Asset Management, highlighted potential intervention from policymakers in Tokyo and Washington as the yen touched critical levels near 160 per dollar. Japan's central bank is eyeing rate hikes, but the broader market remains steady, offset by benign U.S. jobs and inflation reports mitigating interest rate expectations.

Currencies like the Swiss franc and New Zealand dollar navigate through mixed trends attributed to evolving monetary strategies and economic data shifts.