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Correlation Deep Dive

VIX vs Fed Balance Sheet: Correlation Analysis

Pearson correlation of daily returns for VIX and Fed Balance Sheet. Rolling windows, yearly breakdown, regression beta, and divergence analysis. Data window spans to (257 aligned observations).

30-Day
-0.053
Essentially uncorrelated
90-Day
+0.008
Essentially uncorrelated
1-Year
+0.089
Essentially uncorrelated
5-Year
+0.085
Essentially uncorrelated

What the Number Means

With a correlation of 0.01, VIX and Fed Balance Sheet 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

Last 90 Days
+0.008
5-Year Baseline
+0.085

Recent correlation tracks the long-run relationship closely. No meaningful divergence. The historical pattern between VIX and Fed Balance Sheet is intact and should continue to serve as a reasonable baseline for positioning.

Statistical Details (1-Year Window)

Pearson Correlation (r)+0.089
R-Squared (r²)0.008
Beta (VIX vs Fed Balance Sheet)3.662
Daily Volatility σ(VIX)16.41%
Daily Volatility σ(Fed Balance Sheet)0.40%
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 Fed Balance Sheet returns. A beta above 1 means the first asset amplifies moves of the second.

Year-by-Year Correlation

YearCorrelationStrengthObservations
2026+0.015Essentially uncorrelated22
2025+0.074Essentially uncorrelated52
2024-0.039Essentially uncorrelated51
2023+0.280Weak positive52
2022+0.204Weak positive52
2021-0.001Essentially uncorrelated28

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
+0.268
ending 2023-09-13
Most Decoupled Period
-0.188
ending 2024-12-04

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 Fed Balance Sheet, 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.