## The Bank of Japan's Rate Hike Fails to Signal Hawkishness, Yen Continues to Underperform

**Policy Implementation vs. Market Expectations Mismatch**

On December 19, the Bank of Japan announced a rate adjustment, raising the policy rate by 25 basis points to 0.75%—a new high in nearly 31 years. However, market reactions suggest that this "hawkish" move did not enhance the yen's attractiveness as expected. Conversely, the USD/JPY exchange rate rose after the announcement, indicating a clear lack of investor confidence in the central bank's future policy trajectory.

**Lack of Clear Guidance Leaves Market in Interpretation Dilemma**

Governor Ueda Kazuo was cautious in his remarks during the press conference. Regarding the neutral interest rate level (estimated by the BOJ to be between 1.0% and 2.5%), he emphasized that it is "difficult to judge precisely at this stage," and future estimates may need to be adjusted based on economic conditions. This ambiguous stance has caused confusion in the market—investors are eager for a concrete timetable for rate hikes, which has yet to materialize.

ANZ Bank strategist Felix Ryan analyzed that, despite the start of the rate hike cycle, why does the USD/JPY continue to rise? The key lies in the market's lack of clear expectations regarding the specific direction and intensity of the BOJ's subsequent policies. The institution speculates that the BOJ will continue its rate hike process into 2026, but due to the overall global interest rate environment being unfavorable for the yen, the USD/JPY could reach around 153 by the end of 2026.

**Interest Rate Differentials Lag, Yen Underperforms Among G10 Currencies**

It is noteworthy that the interest rate differential gap between Japan and major developed countries is dragging down the yen. Under the dual influence of the Federal Reserve maintaining a relatively loose stance and Japanese investors increasing foreign exchange hedging activities, the yen has shown relative weakness among G10 currencies. Masahiko Loo of Dimensional Fund Advisors pointed out that the firm maintains a medium-term target of 135-140 for USD/JPY.

**How Does the Market Define "Truly Hawkish"?**

The overnight index swap (OIS) market's pricing reveals the market sentiment—traders currently expect the BOJ to raise rates to 1.00% by Q3 2026. Nomura Securities notes that only if the governor signals a rate hike timetable significantly earlier than this (for example, before April 2026) will the market truly interpret this as a hawkish shift, triggering a yen rally. Without a substantial upward revision of the neutral rate target, it will be quite challenging for the BOJ governor to convince the market that the terminal rate will rise further.

**Outlook**

The current situation indicates a game of policy expectations versus market interpretation in yen exchange rate forecasts. Whether the BOJ can continue its rate hike pace as expected, and whether more aggressive policy shifts are on the horizon, will be key factors in determining the yen's future trajectory.