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Correlation
of % moves
+90%
In sync
of periods
85%
History
daysdays · through 2026-09-04
1,113
These move in the same direction about 85% of the time
When one swings, the other almost always swings by a closely matched amount (~81% of the pattern is shared).
Strong enough to use as a signal — check the stability and regime notes below before relying on it.
On a log scale so equal % moves take equal vertical space — best when one series has grown much faster than the other.
What to Watch
Decouples in drawdowns
The relationship weakens when both prices are falling — don't count on this pair as a hedge under stress.
Advanced
Statistics
In sync(i)
85%
Headline metric
Movement correlation(i)
+90%
Based on % moves
95% CI
+89% → +91%
Likely range of correlation
Pipeline
Pipeline Summary
1,113 paired data points survived the daily window.
Raw input
1,118
9,268
Normalized
1,118
9,268
Prepared
1,118
9,268
Aligned
1,113
1,113
Invalid removed
R²(i)
81%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points(i)
1,112
Deep
Time-Shifted Correlation
See how correlation changes when one series is offset in time. A taller bar at a non-zero shift means the two move together better when one leads the other — that's a potential lead/lag signal.
Correlation by shift
Click a bar to inspect. Range: -6 to 6 days.
Selected shift
No shift
Correlation at this shift
+90%
No shift — both series at their actual dates.
1,112 overlapping points at this shift
Baseline
+90%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+90%
A non-zero peak suggests one series lines up better when shifted against the other.
Stability
How the correlation evolves over time. A stable line means the relationship is reliable; large swings signal regime-dependent behavior.
Do They Crash Together?
How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.
Both Rising
+32%
70 periods · Return correlation when both series rose
Both Falling
+11%
85 periods · Return correlation when both series fell
Diverging
-17%
11 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
8,160
A: 5 / B: 8155
Series A
2x Long VIX Futures ETF (UVIX)
UVIX
Stock · 1,118 raw → 1,118 prepared
Series B
VIX
VIXCLS
FRED · 9,268 raw → 9,268 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.8174
Linear regression slope.
Intercept
0.0059
Linear regression intercept.
Saved 4 months ago · ID: fred-vixcls_stock-uvix_daily_5y