The USD/JPY pair has dropped below 155.00 due to high demand for Japan’s 30-year government bonds, which lowered yields. In December, the average bid-to-cover ratio for these bonds hit 4.04, the highest since May 2019, compared to 3.125 in November.
The swaps market is nearly factoring in a 25 basis point rate hike by the Bank of Japan (BoJ) to 0.75% on December 19. This, along with Japan’s recent fiscal stimulus, supports the JPY and suggests possible further movements in USD/JPY toward around 140.00, based on the US-Japan two-year bond yield spreads.
Breaking Below Key Level
The USD/JPY pair breaking below 155.00 suggests a possible change in trend. This shift is influenced by a growing policy gap, as markets expect the Federal Reserve to cut rates on December 10, while the Bank of Japan is likely to raise rates. This indicates a fundamental adjustment for the Yen, which has been seen as undervalued.
The strong interest in Japanese government bonds backs this outlook, as seen in the latest 30-year bond auction, which had its highest bid-to-cover ratio since May 2019. The rise in Japan’s national Core CPI to 2.9% for October 2025, above the BoJ’s 2% target for 19 months, gives the BoJ a strong reason to tighten policy on December 19.
In contrast, the US dollar is losing ground as the market shifts attention to the Fed’s dovish stance. The recent US Core PCE Price Index reading is 2.8% for October 2025, reinforcing expectations for a rate cut next week. This situation stands in stark contrast to the aggressive rate hikes seen in 2022 and 2023.
Strategies for Traders
For traders in derivatives, this suggests positioning for increased Yen strength against the dollar in the upcoming weeks. Buying JPY call options or USD put options with expirations after the December 19 BoJ meeting could be a smart strategy. This allows traders to benefit from a potential drop toward the 140.00 level, in line with interest rate differences.
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