The wide US-Japan interest rate differential, with the Fed's target range at 3.75-4.00% versus the BoJ's 1.25% following its September hike, remains the dominant driver of USD/JPY positioning near 158 as of early October 2026. Elevated US Treasury yields above 5.2% and firmer US inflation prints have sustained dollar demand, while Tokyo core CPI at 2.7% year-over-year supports further BoJ tightening expectations. Recent BoJ meeting summaries tempered October hike odds, contributing to the pair's third consecutive weekly gain. Key near-term catalysts include the October 28 FOMC decision and BoJ meeting two days later, alongside US CPI and jobs data, which could alter the policy gap and influence whether the pair tests resistance near 159-160 or pulls back toward 155-156 by year-end. Trader sentiment reflects ongoing carry trade dynamics and relative monetary policy paths.