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Correlation
of % moves
+71%
In sync
of periods
78%
History
daysdays · through 2026-06-11
730
These move in the same direction about 78% of the time
When one swings, the other often swings by a similar amount (~50% 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
Unusual right now
Recently tighter than usual — the pair is behaving differently than its long-run pattern.
Tighter in drawdowns
The relationship is stronger when both prices are falling than when both are rising — typical risk-off behaviour.
Rock solid
The relationship barely changes from period to period — treat it as a reliable signal.
Advanced
Statistics
In sync(i)
78.5%
Headline metric
Movement correlation(i)
+71%
Based on % moves
95% CI
+67% → +74%
Likely range of correlation
Pipeline
Pipeline Summary
730 paired data points survived the daily window.
Raw input
730
730
Normalized
730
730
Prepared
730
730
Aligned
730
730
Invalid removed
R²(i)
50.4%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
730
Robust
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
+71%
No shift — both series at their actual dates.
729 overlapping points at this shift
Baseline
+71%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+71%
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
+28%
111 periods · Return correlation when both series rose
Both Falling
+55%
109 periods · Return correlation when both series fell
Diverging
-47%
29 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
Bitcoin (BTC)
BTC
Crypto · 730 raw → 730 prepared
Series B
Ethereum Classic (ETC)
ETC
Crypto · 730 raw → 730 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
28
Estimated crossover points between normalized spreads.
Slope
1.1358
Linear regression slope.
Intercept
-0.0016
Linear regression intercept.
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