Yen volatility surges to highest level since intervention as options market bets on impending BOJ storm

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智通财经2026/09/09 12:56

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The USD/JPY pair has rapidly fallen from the mid-159s over the past week, becoming the clearest trading theme in the options market. The 1-month implied volatility spiked from around 7.2 to approximately 11.6, surpassing the highs set during the intervention in July.
The 25-delta risk reversal index jumped in tandem, with the cost of downside protection rising sharply. This has prompted significant hedging demand to shift toward reverse knockout options, with strike prices concentrated around 150 and knockout ranges between 145 and 147. The relevant trading volume has reached its highest level since January 2024.
The September 18 Bank of Japan decision has become another driver of implied volatility premiums. Option pricing shows that the cost of overnight volatility on the night of the meeting is about 21 implied volatility points, far above the level before last week's plunge, indicating the market is pricing in a genuinely turbulent policy outcome.
If the most acute phase of the spot exchange rate's decline has already passed, there is room for implied volatility to retreat, offering a window for short volatility strategies. However, Thursday's Producer Price Index may become an underestimated source of risk, as overnight option pricing has not fully reflected this event.
In contrast, the EUR/USD pair is in a completely different scenario, with the exchange rate hovering near the 200-day moving average, but option pricing remains subdued. Both implied and realized volatility are at low levels, and the risk reversal index has returned to neutral, reflecting a lack of clear directional bets in the market.

Disclaimer: The content of this article solely reflects the author's opinion and does not represent the platform in any capacity. This article is not intended to serve as a reference for making investment decisions.

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Yen volatility surges to highest level since intervention as options market bets on impending BOJ storm

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