JPY undervaluation presents contrarian opportunities
What the chart shows:
The chart displays USDJPY and its fair valuations derived from 10-year yield differentials and purchasing power parity (PPP). Using 3-year and 20-year rolling regressions reflects shorter- and longer-term aspects of capital flows and inflation dynamics, respectively. Additionally, it provides USDJPY scenarios based on 2.5-3.5% 10-year US-Japan bond yield differentials and visualizes USDJPY’s long-run subsequent returns compared to PPP fair valuation deviations.
Behind the data:
The {{nofollow}}BoJ tightened its monetary policy, raising the policy rate to 0.25% and reducing bond purchases. The {{nofollow}}Fed held rates steady but {{nofollow}}signaled a possible cut in September. These narrowed the 10-year US-Japan bond yield gap to around 3%. Given scenarios of 2.5-3.5% 10-year yield differentials, USDJPY is estimated to be around 129-146.
The PPP model shows JPY undervaluation against the USD above +2 standard deviations, indicating potential for long-term reversion.
However, overestimated core inflation and {{nofollow}}slowing real wages in Japan may challenge BoJ’s hawkish stance, suggesting USDJPY overvaluation—even reverting—might persist.