SeriesMagCorrSyncOverlapThrough
Correlation
of % moves
-68%
In sync
of periods
23%
History
daysdays · through 2026-05-06
1,255
These move opposite each other about 23% of the time
When one swings, the other often swings by a similar amount in the opposite direction (~47% 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
Slipping looser
The recent pattern is looser than its long-run baseline — keep an eye on whether this sticks.
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Mostly stable
The relationship drifts a little but stays in the same neighbourhood.
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Advanced
Statistics
In sync(i)
23.3%
Headline metric
Movement correlation(i)
-68%
Based on % moves
95% CI
-71% → -65%
Likely range of correlation
Pipeline
Pipeline Summary
1,255 paired data points survived the daily window.
Raw input
1,255
1,255
Normalized
1,255
1,255
Prepared
1,255
1,255
Aligned
1,255
1,255
Invalid removed
R²(i)
46.8%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
1,255
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
-68%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Baseline
-68%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-68%
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
-24%
25 periods · Return correlation when both series rose
Both Falling
+17%
26 periods · Return correlation when both series fell
Diverging
-48%
198 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
VXX
Stock · 1,255 raw → 1,255 prepared
Series B
SPY
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
11
Estimated crossover points between normalized spreads.
Slope
-0.4235
Linear regression slope.
Intercept
577.8423
Linear regression intercept.
Saved 5 hours ago · ID: stock-spy_stock-vxx_5y
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Top 10 by absolute correlation
Ranked across both sides of this comparison using the same dense row format as the single-symbol correlations view.