Insights 
VT 
The Bank of Japan is anticipated to maintain its interest rates at 0.5% during the policy meeting on September 18-19. This decision would mark the fifth consecutive meeting without altering the rate since the increase in January.
Board members generally agree that raising rates at this point would be premature, with markets aligning with this expectation. Policymakers are keeping a close watch on the effects of recent U.S. tariffs, especially on export sectors like the automotive industry, and the subsequent impact on wages and investment in Japan.
Market Expectations
A lack of market surprises is expected, with minimal yen movement unless there is an indication of tariff-related economic risks. Japanese equities, particularly exporter shares, may proceed with caution, as the automotive sector evaluates its guidance under tariff stress. In terms of fixed interest, the BOJ’s consistent policy supports a continuation of differing trends with the Federal Reserve, keeping global yield spreads in focus.
The upcoming Bank of Japan meeting is widely seen as a non-event, so we should consider strategies that benefit from low volatility, like selling strangles on USD/JPY options. Implied volatility for one-month options has already fallen to 7.2% this week, showing the market has priced in the expected inaction. This profits from stability, but we must watch for any new commentary on tariff risks that could cause a surprise move.
We see an opportunity to hedge downside risk in Japanese stocks, particularly through buying put options on the Nikkei 225 index. This view is supported by the latest August 2025 trade data, which revealed a 1.5% month-on-month decline in auto exports to the United States. Key exporters are now under pressure to revise their yearly forecasts, which could weigh heavily on the index in the coming weeks.
Macro Play
The policy divergence between the BOJ and the U.S. Federal Reserve remains the most significant macro play. With the U.S. Fed funds rate holding firm at 4.75%, the yield gap between the two nations continues to support the yen carry trade. This strategy of borrowing in yen to invest in higher-yielding U.S. assets has been consistently profitable, similar to what we observed during the 2022-2024 period.
Looking back, the BOJ maintaining its policy rate is a familiar pattern, echoing the long periods of stability we saw after it first introduced negative interest rates back in 2016. What is new is the explicit focus on U.S. tariffs as a primary risk, a clear shift in tone from earlier in the year. Therefore, while the decision to hold rates is expected, the justification for it may be turning more defensive.
