USD/JPY vs 10Y Treasury Yield: Correlation Analysis
Pearson correlation of daily returns for JPY/USD and 10Y Treasury Yield. Rolling windows, yearly breakdown, regression beta, and divergence analysis. Data window spans to (1,243 aligned observations).
What the Number Means
With a correlation of 0.18, JPY/USD and 10Y Treasury Yield are essentially uncorrelated at daily frequency. Either the relationship operates at a different time horizon or the shared driver has been dominated by idiosyncratic noise during the observation window.
Recent vs Long-Run Behavior
The correlation has weakened materially. The 90-day reading of 0.18 sits 0.21 below the long-run average of 0.39. Falling correlation signals the dispersion regime where idiosyncratic stories dominate and cross-asset diversification benefits improve.
Statistical Details (1-Year Window)
| Pearson Correlation (r) | +0.292 |
| R-Squared (r²) | 0.085 |
| Beta (JPY/USD vs 10Y Treasury Yield) | 0.189 |
| Daily Volatility σ(JPY/USD) | 0.61% |
| Daily Volatility σ(10Y Treasury Yield) | 0.93% |
| Observations | 252 |
Correlation measures directional co-movement; R² quantifies the fraction of variance explained by the linear relationship. Beta is the slope coefficient from regressing JPY/USD returns on 10Y Treasury Yield returns. A beta above 1 means the first asset amplifies moves of the second.
Year-by-Year Correlation
| Year | Correlation | Strength | Observations |
|---|---|---|---|
| 2026 | +0.269 | Weak positive | 175 |
| 2025 | +0.407 | Moderate positive | 249 |
| 2024 | +0.542 | Moderate positive | 250 |
| 2023 | +0.451 | Moderate positive | 249 |
| 2022 | +0.352 | Weak positive | 249 |
| 2021 | +0.623 | Strong positive | 71 |
Year-by-year correlation reveals how the relationship has held up across different macro regimes. Sharp year-over-year swings in correlation often mark the transition between stress and calm periods.
Rolling 90-Day Extremes
Extremes in rolling 90-day correlation often coincide with regime changes, forced deleveraging, or the arrival of a dominant new macro theme that overwhelms normal relationships.
Methodology
Correlations are computed on daily log-adjacent returns for JPY/USD and 10Y Treasury Yield, aligned on shared trading dates. We use the Pearson product-moment coefficient, which measures the linear relationship between two return series.
Windows are the most recent N observations for 30D, 90D, and 1Y (252 trading days); the 5Y figure uses all aligned data up to 1,260 observations. Beta is the OLS slope from regressing the first series on the second. Data updates daily with a 24-hour revalidation cadence.
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Get daily macro analysis on shifting correlations, regime transitions, and cross-asset signals.
Correlation is not causation and backward-looking statistics can fail when regimes shift. Positions sized on historical correlation assumptions should be stress-tested against scenarios where the relationship breaks. For informational purposes only.