BNY’s Bob Savage says Katayama is watching closely, ready to counter abrupt yen moves above 157

    by VT Markets
    /
    Mar 3, 2026
    Japan’s Finance Minister Satsuki Katayama said authorities are watching financial markets with “utmost vigilance” and are ready to take steps in response to sharp foreign exchange moves. This came as volatility rose after U.S. and Israeli attacks on Iran. The yen traded at about 157.52 per US dollar on Tuesday, after moving above 157 for the first time since early February. The move added to talk of possible market action under a joint US-Japan statement that lists FX measures as an option.

    Japan Signals Readiness To Act

    Katayama said Japan would work closely with overseas authorities and aim to limit disruption to the economy. She also pointed to efforts to keep energy supplies stable. Japan sources about 90% of its oil from the Middle East. LNG stockpiles are about three weeks, and roughly 4% of imports come from Qatar. With Japanese authorities signaling intervention as USD/JPY pushes past 157, we should expect a sharp increase in currency volatility. One-month implied volatility for the pair has likely jumped above 14%, reflecting the market’s pricing of a sudden, multi-yen move. This environment makes holding unhedged long USD/JPY positions exceptionally risky in the near term. We have to remember the interventions of late 2022, which from our perspective last year, showed that Japanese officials will act decisively once a line is crossed. On those occasions, the dollar fell against the yen by as much as 500 pips within minutes of the Bank of Japan entering the market. A similar move from the 157.50 level could easily send the pair back below 153.

    Traders Reassess Hedging And Volatility Risk

    The fundamental pressure, however, remains a wide interest rate differential, with the U.S. Fed Funds Rate holding around 3.5% while the Bank of Japan’s policy rate is just 0.25%. This gap continues to make borrowing yen to buy dollars a profitable carry trade, creating a constant upward pull on the currency pair. This makes timing a short position difficult without a clear trigger. For traders holding long USD/JPY positions, buying downside protection is now critical. Purchasing out-of-the-money put options on USD/JPY with a one-month expiry offers a hedge against a sudden intervention. This strategy effectively caps losses while allowing for further gains if authorities decide to wait. Selling options, particularly USD/JPY calls, has become a very dangerous strategy. While premiums are elevated, the combination of a strong underlying uptrend and the threat of sharp reversals creates a high risk of significant losses. The risk of the pair drifting higher before a sudden collapse makes short-volatility plays unattractive. The geopolitical situation, with Brent crude futures now trading over $110 per barrel, complicates matters further for Japan. As a major energy importer, a weak yen combined with high oil prices creates severe economic strain. This external pressure increases the likelihood that authorities will be forced to act sooner rather than later to strengthen the currency. Create your live VT Markets account and start trading now.

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