Asian currencies strengthened across the board Tuesday as U.S. Treasury yields retreated from recent highs, reducing the attractiveness of dollar-denominated assets. The South Korean won reached a one-year peak, leading regional gains alongside broad-based strength in emerging market currencies.

The 10-year Treasury yield dropped below 4.3%, easing pressure on Asian central banks and their currencies. Lower yields make dollar investments less compelling for international investors, triggering capital flows into higher-yielding emerging market assets. The dollar index fell to a three-week low, benefiting the entire Asian FX complex.

South Korea's won extended gains to touch 1,210 per dollar, the strongest level since late 2023. Improved risk sentiment surrounding Korean equities and the country's export outlook supported the currency. The Bank of Korea's hawkish stance on future rate decisions also underpinned the won's outperformance relative to regional peers.

The Philippine peso, Indonesian rupiah, and Thai baht all posted gains. Malaysia's ringgit climbed to a four-month high as regional central banks benefited from the pivot away from aggressive Fed tightening expectations. China's yuan appreciated against the dollar but faced headwinds from domestic economic data, with industrial production and retail sales missing forecasts.

India's rupee also strengthened, hovering near seven-month highs after the Reserve Bank of India signaled its commitment to gradual rate adjustments. The currency benefited from inflows into Indian equities ahead of corporate earnings season.

Traders now await Federal Reserve communications this week for signals on future rate paths. Market expectations have shifted toward a pause in rate hikes, with some pricing in potential cuts by year-end if inflation continues moderating. This repricing of Fed policy expectations explains the broad dollar weakness and Asian currency strength observed across trading sessions.

Equity markets in the region