CONVEX
Correlation Deep Dive

VIX vs 10Y Treasury Yield: Correlation Analysis

Pearson correlation of daily returns for VIX and 10Y Treasury Yield. Rolling windows, yearly breakdown, regression beta, and divergence analysis. Data window spans to (1,244 aligned observations).

30-Day
+0.443
Moderate positive
90-Day
+0.235
Weak positive
1-Year
+0.027
Essentially uncorrelated
5-Year
-0.075
Essentially uncorrelated

What the Number Means

A correlation of 0.23 signals only a weak tendency to move together. On most days the two move independently. Do not expect one to reliably predict the other. Look for conditional relationships within specific regimes or event windows.

Recent vs Long-Run Behavior

Last 90 Days
+0.235
5-Year Baseline
-0.075

A regime flip is underway. VIX and 10Y Treasury Yield have historically moved inversely (-0.07), but over the past 90 days they have been moving together (0.23). When a long-running negative correlation turns positive, it usually signals a shared stress factor overwhelming the normal relationship. Watch for forced deleveraging or a dominant macro theme reasserting.

Statistical Details (1-Year Window)

Pearson Correlation (r)+0.027
R-Squared (r²)0.001
Beta (VIX vs 10Y Treasury Yield)0.207
Daily Volatility σ(VIX)7.47%
Daily Volatility σ(10Y Treasury Yield)0.98%
Observations252

Correlation measures directional co-movement; R² quantifies the fraction of variance explained by the linear relationship. Beta is the slope coefficient from regressing VIX returns on 10Y Treasury Yield returns. A beta above 1 means the first asset amplifies moves of the second.

Year-by-Year Correlation

YearCorrelationStrengthObservations
2026+0.231Weak positive92
2025-0.165Essentially uncorrelated249
2024+0.005Essentially uncorrelated250
2023-0.028Essentially uncorrelated249
2022+0.088Essentially uncorrelated249
2021-0.383Weak negative155

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

Most Correlated Period
+0.376
ending 2022-12-05
Most Decoupled Period
-0.454
ending 2023-07-03

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 VIX 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.