Yen Rises on BOJ Rate Hike Bets and Soft Dollar

The dollar traded lower against the yen for a second consecutive session during Monday's Asian hours, hovering near 158.85. Stronger-than-expected Japanese inflation data provided upward momentum for the yen, with market bets on an imminent Bank of Japan policy tightening significantly heating up.

**Inflation Data Solidifies Rate Hike Expectations**

Latest data showed Japanese inflation accelerating for a second straight month, persistently exceeding the central bank's 2% target level. This trend, combined with recent hawkish remarks from BOJ policymakers, has sharply boosted market expectations of a policy shift. According to Reuters, overnight index swap markets now indicate a roughly 80% probability of a BOJ rate hike as early as September. The strengthening of rate hike expectations has directly narrowed the interest rate differential outlook between the US and Japan, serving as the core driver behind the yen's firmness.

**Long and Short Forces Battle at the 160 Level**

Despite the yen's near-term strength, the exchange rate remains caught between two policy forces. On one hand, Japanese inflation and rate hike expectations support the yen; on the other, elevated long-term US Treasury yields limit the yen's appreciation potential. Market analysts point to the 160.00 level as a key gauge for comparing long and short-side forces. From a technical perspective, dollar-yen remains constrained by the 100-day moving average and the mid-band of the Bollinger Bands, with both resistance levels concentrated around 160.00. Unless the exchange rate can effectively break through this zone, the current rebound leans more toward a technical correction than a trend reversal.

**Fed Policy Path Adds Uncertainty**

Shifting US monetary policy expectations also provide external conditions for yen strength. Recent US labor market weakness and moderate inflation data have led markets to lower bets on further Fed rate hikes. BofA Securities analyst Sean Osborne noted that moderate inflation and a cooling labor market have significantly reduced the likelihood of a Fed rate hike in September. If subsequent US economic data continues to show a slowdown, Treasury yields and the dollar could face greater pressure. Even if the BOJ's actual rate hike is limited, dollar-yen may continue its downward adjustment as interest rate differential expectations narrow.