On September 22nd, the Bank of Japan announced its latest monetary policy decision, keeping the key short-term interest rate unchanged at -0.1% and maintaining the target yield range for 10-year Japanese government bonds at +0.5%, which aligns with analysts' expectations.
However, both the central bank's statement and Governor Ueda Kazuo's comments showed no clear signs of a policy stance shift, disappointing market participants. Following the interest rate announcement, the USD/JPY pair briefly increased by over 40 pips, reaching above 148.
Although this meeting leaned towards a dovish outcome, the market believes that the Bank of Japan will naturally make hawkish adjustments as inflation continues to rise unexpectedly. Data from last Friday indicated that Japan's August overall CPI, core CPI (excluding fresh food), and core-core CPI (excluding fresh food and energy) grew year-on-year by 3.2%, 3.1%, and 4.3% respectively, slightly surpassing market expectations.

【Source:MacroMicro 】
Analysts point out that the USD/JPY level of 150 will serve as a trigger for Japan to take intervention measures.
Mitrade Analyst:
The expectation of market tightening has been shattered, leading to increased pressure for the depreciation of the Japanese yen. The Bank of Japan will likely have to intervene to prevent excessive devaluation of the yen exchange rate. Therefore, we believe that the USD/JPY will continue to experience a volatile trend this week, with a range of 147-150.
From a technical perspective, the USD/JPY has approached the previous high around 148.50 in early November last year. If it continues to break above, the next target would be at 149. However, the MACD indicator shows some consolidation signals, and we still believe that the USD/JPY may experience a temporary upward surge followed by a decline this week, with support levels around 147.

【Source:TradingView】