Insights 
VT 
Japan’s August national inflation indicated a moderation in core CPI, slowing to 2.7% year-on-year. This aligns with predictions and decreases from 3.1% in July, yet remains above the Bank of Japan’s 2% target.
The core-core index, which excludes fresh food and fuel, increased by 3.3% compared to the same period last year, slightly less than July’s 3.4%. The data, though not a major relief for households, is enough to maintain the Bank of Japan’s cautious stance.
Upcoming Boj Policy Decision
The focus now shifts to the upcoming Bank of Japan policy decision. It is widely anticipated that the Bank will keep its main interest rate unchanged.
Meanwhile, major foreign exchange rates experienced minimal fluctuations.
With inflation remaining stubbornly above the Bank of Japan’s target, we see the current quiet in the currency markets as a temporary state. The August inflation data, while slightly lower, doesn’t change the fact that pressure is building on the BoJ to eventually act. For now, the expectation is for no change, creating a coiled spring scenario for the Japanese yen.
We are positioning for a significant increase in volatility in the coming weeks, regardless of the BoJ’s immediate decision. One-month implied volatility on USD/JPY options has already crept up to 9.8%, a sharp rise from the 7.5% average seen over the summer. This indicates that traders are buying options to protect against, or bet on, a large price swing after the current period of calm.
Historical Context and Market Strategies
Looking back, we recall the sharp, multi-yen moves in a single day during the Ministry of Finance interventions back in 2022 and 2023. While the situation is different now, it shows how quickly the yen can reprice once a catalyst emerges. We are therefore considering strategies like long straddles on the yen, which profit from a large move in either direction.
In the bond market, the 10-year Japanese Government Bond yield is hovering near 1.2%, a level not seen since the early 2010s. We see this as a clear signal that the market is pricing in an eventual end to negative interest rates. Shorting JGB futures remains a viable strategy to bet on yields continuing their slow but steady climb.
For equities, any hint of future policy tightening from the BoJ would likely strengthen the yen, which could negatively impact Japanese exporters in the Nikkei 225. We have observed the Nikkei’s put-to-call ratio increase to 1.2 over the past week, showing a growing demand for downside protection. Buying put options on the index serves as a good hedge against this specific risk.
