Yen Tumbles 0.84% to 159.14 Per Dollar, Biggest Drop in Five Months

The yen fell 0.84% to 159.14 per dollar on August 10, 2026 — its steepest daily decline in nearly five months, per Reuters. The dollar index rose 0.20% to 99.80. The 159 level has historically drawn intervention from Japanese authorities. CFTC data showed traders cut net short yen positions by a record $8.865 billion in the week to August 4, leaving less fuel for a rebound.