USD/JPY moved back above 159.00 after hitting a weekly low of 158.26. It was trading at 159.17, up 0.11% at the time of writing.
The US Dollar strengthened alongside mixed US data. The US Dollar Index (DXY) reached a two-day high of 98.29.
Intervention Risk Near Key Levels
The pair still points upwards, but Japanese authorities may use verbal warnings that could slow further gains. This may limit moves towards 160.00 and the year-to-date high of 160.46.
The Relative Strength Index (RSI) remains on the bullish side but has been drifting down towards 50. This suggests buying momentum is fading and selling pressure is growing.
A break above 159.50 would open a move towards 160.00. If 160.00 gives way, the next levels are 160.46 and 161.81 (from 10 July 2024).
On the downside, support sits at 159.00 and then 158.26. Below that, the 50-day SMA is at 157.61 and the 100-day SMA is at 156.97.
Lessons From The 2025 Playbook
We remember the situation well in mid-2025 when the pair reclaimed 159.00. The weakening bullish momentum seen in the RSI then was a classic signal that the market was testing the resolve of Japanese authorities. That tension around the 160.00 level created significant uncertainty for traders at the time.
The landscape has shifted since last year’s verbal warnings. We saw Japanese authorities follow through with direct market intervention later in 2025, similar to the ¥9.8 trillion spent back in the spring of 2024 to defend the yen. This history of decisive action makes the threat of intervention today, as we approach similar levels, far more credible.
Fundamentally, the carry trade is less appealing than it was in 2025. With the Federal Reserve having cut its key rate to around 4.0% in a series of moves and the Bank of Japan making a modest hike to 0.25%, the interest rate differential has narrowed. This change dampens the explosive upward momentum we saw previously.
For the coming weeks, this suggests a different options strategy than last year. With the upside likely capped by intervention risk near 160.50, traders should consider buying put options for downside protection or implementing bear call spreads to profit from a sideways or downward move. Implied volatility is lower than during the peaks of 2025, making these strategies more cost-effective.
If US economic data, such as the upcoming CPI report, comes in weaker than expected, it could accelerate a move lower. A break below the 158.25 level would signal a significant shift in sentiment. This would bring the 50-day moving average, now sitting around 157.80, into focus as the next support level.