Bitcoin has started 2026 fairly bullish, trading past the $90,000 region, although it is struggling to maintain this level after reaching its all-time high of $126,000 in October 2025.
Investors face an additional factor in determining Bitcoin’s possible trajectory. The cryptocurrency has shown unprecedented correlation with the Japanese yen index (JPYX) since its peak in October.
The correlation is reaching a record high
Bitcoin’s price movement has shown a striking correlation with the Japanese Yen Index (JPYX) since October 2025, with both assets moving closely together.
The correlation coefficient on weekly time frames has reached an all-time high of 0.89, representing a correlation of 89%. This surpasses the previous peak of 0.82 recorded in August 2022.
By the way, the intensification of this relationship started in October 2025 and coincided with Bitcoin’s peak at $126,000. Since then, both assets have largely moved in sync, with Bitcoin returning to current levels around $90,000.
Source: TradingView
The JPYX is a synthetic benchmark created by Pepperstone to track the overall strength or weakness of the Japanese yen against a basket of major currencies including USD, AUD, NZD and GBP.
It exists as a Contract for Difference (CFD), which means investors do not hold real yen.
Given this strong correlation, the index’s movement has become increasingly important in determining Bitcoin’s direction on the chart, as the cryptocurrency attempts to regain ground above the $90,000 region.
Japanese bond market in pictures
In the short term, the yen is showing signs of strengthening following news that the government will soon auction 700 billion yen worth of Japanese government bonds (JGBs), especially 30-year bonds, to the market.
This development has affected the yield on 10-year Japanese government bonds, which retreated slightly from a 27-year high of 2.132% to 2.081%, according to Trading Economics.
Source: Trade Economics
Bond yields had risen to higher levels as investors anticipated interest rate hikes from the Bank of Japan, especially after hawkish comments from the central bank governor and concerns about substantial government spending plans.
The outcome of the auction will play a crucial role in determining the yen’s performance and, given the established correlation, could influence Bitcoin’s market behavior in the coming days.
Wage pressure complicates the outlook
Weak wage growth has proven to be a complicating factor for Japan’s economic prospects. According to the latest figures, real wages in the country will have fallen by 2.8% in November 2025 facts.
As wages fall while prices rise, consumers face increasing pressure, and the central bank finds it harder to justify aggressive rate hikes.
Markets are now confronted with conflicting signals.
Expectations of higher interest rates are clashing with signs of economic weakness. This tension has caused bond yields to fall while uncertainty has increased.
For Bitcoin investors, the performance of Japanese bond yields in the coming days could provide crucial signals for the cryptocurrency’s near-term price, given the historically strong correlation between the assets observed since October.
Final thoughts
- Bitcoin and the JPYX index show a correlation of 89%, the highest level ever, as the correlation intensified in October 2025 after BTC peaked at $126,000.
- An upcoming auction of Japanese government bonds and rising yields could influence the next moves of both assets.