USD/JPY Tests 157.00 Support as Yen Gains, Intervention Risks Rise

USD/JPY extended its decline for a second consecutive session on Wednesday, trading near 157.10 during Asian hours. The pair remains inside a symmetrical triangle formation, reflecting a period of consolidation as buyers and sellers compete for control. A decisive breakout from the pattern could determine whether the U.S. dollar resumes its advance or the Japanese yen extends its recovery.

The pair is trading below both its nine-day and 50-day Exponential Moving Averages (EMAs). This keeps near-term price action under pressure, while the 14-period Relative Strength Index (RSI) near 49 signals broadly neutral momentum rather than an established oversold condition.

The technical structure leaves traders focused on several key levels:

• 157.22: Nine-day EMA and first resistance.
• 157.98: 50-day EMA and next upside barrier.
• 155.60: Lower boundary of the triangle and initial support.

Yen Intervention Risk Remains High

The technical setup is unfolding alongside renewed warnings from Japanese officials over excessive yen weakness. MUFG said recent comments from Japanese policymakers have reinforced expectations that authorities remain prepared to respond to disorderly currency moves.

Japanese officials have repeatedly indicated that excessive and one-sided currency movements could warrant a response. The issue is particularly important for USD/JPY, because a higher exchange rate means the dollar is gaining against the yen and can increase Japan’s import costs.

The Bank of Japan has also raised its policy rate to 1.25%, keeping monetary-policy normalization in focus as policymakers assess inflation and economic conditions.

Meanwhile, differences between Federal Reserve and Bank of Japan policy remain an important driver of the currency pair. Changes in U.S. Treasury yields can influence dollar demand, while expectations for further Japanese rate adjustments can affect demand for the yen.

Breakout Levels Set Next Direction

A move above the triangle’s upper boundary near 158.80 would shift attention toward higher resistance levels. The next major reference point is 163.99, the high recorded on July 23 and a level that would represent a significant extension of the pair’s current advance.

Conversely, a break below 155.60 would weaken the consolidation structure and expose USD/JPY to deeper losses. The next major downside reference is 152.10, an approximately 11-month low.

For now, USD/JPY remains caught between U.S. yield support for the dollar and growing Japanese policy pressure against excessive yen depreciation. The combination of a neutral RSI, falling short-term averages and the developing triangle leaves the next confirmed breakout particularly important.

Conclusion

USD/JPY is approaching a technically important area near 157.00 after slipping beneath its short- and medium-term EMAs. The neutral RSI leaves room for movement in either direction, making the symmetrical triangle particularly important. A break above 158.80 could shift attention toward 163.99, while a move below 155.60 would expose the pair to 152.10. Meanwhile, Japanese yen intervention concerns remain an important factor for traders monitoring USD/JPY.