Yen's Rise Defies Historical Patterns as Carry Support Deteriorates

The yen's current appreciation episode differs from previous corrections due to shifts in traditional drivers of structural yen weakness.

A MUFG Research analysis framework has identified deteriorating carry dynamics as a key factor. The US-Japan yield differential has narrowed significantly, and Japanese Government Bond (JGB) yields have risen to their highest levels in decades.

The combination of weaker carry support, softer capital outflows, ongoing Bank of Japan (BoJ) tightening, and an emerging political dimension suggests the current appreciation phase may be more persistent than recent historical precedents.