Japan’s Finance Minister, Satsuki Katayama, said on Tuesday that Japan will closely review the details of a US Supreme Court decision on tariffs. A correction clarified that the comments were made on Tuesday, not Friday.
Katayama said Japan will continue to roll out an investment package aimed at the United States. She also said Japan must stay aware that US tariffs on automobiles are still in place.
Tariff Ruling Raises Uncertainty
She said Japan has been in close talks with the United States, when asked about a Nikkei report on a New York Fed “rate check”. Katayama said she would not comment on rate checks.
At the time of reporting, USD/JPY was up 0.14% on the day at 154.90.
USD/JPY is facing strong pressure and is trading near 154.90 as officials speak publicly about major trade issues. The Finance Minister’s focus on the US Supreme Court tariff ruling adds a key new source of uncertainty. This backdrop points to a higher chance of a sharp rise in currency volatility in the coming weeks.
Her “no comment” on a possible NY Fed rate check is a common signal that officials are uneasy about yen weakness. Similar warnings in late 2022 and again in 2024 came before direct market interventions, when the pair moved above the 150–152 area. Derivative traders may want to consider USD/JPY put options to position for a sudden, intervention-driven drop.
Options Volatility Strategies
It is also important to remember that the risk of US auto tariffs remains a serious threat to Japan’s economy. The US is still the main market for Japanese car exports, with more than 1.7 million vehicles in 2025, making it a major source of revenue. This pressure could limit any lasting yen strength. That could make strategies like selling out-of-the-money JPY calls appealing for premium income.
With these forces pulling in different directions, implied volatility in USD/JPY options may rise from current levels. One-month volatility has been below 10%, which looks low given the higher risk of policy headlines and possible central bank action. Traders could consider strategies like long straddles, which can profit from a large move in either direction, to take advantage of the growing uncertainty.
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