Correlation
of % moves
+45%
In sync
of periods
62%
History
daysdays · through 2026-05-07
303
These move in the same direction about 62% of the time
Their swing sizes loosely line up (~20% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
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
Tighter in drawdowns
The relationship is stronger when both prices are falling than when both are rising — typical risk-off behaviour.
Mostly stable
The relationship drifts a little but stays in the same neighbourhood.
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Advanced
Statistics
Approximate (legacy record)In sync(i)
61.8%
Headline metric
Movement correlation(i)
+45%
Based on % moves
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
303 paired data points survived the daily window.
Raw input
303
1,255
Normalized
303
1,255
Prepared
303
1,255
Aligned
303
303
Invalid removed
R²(i)
20.2%
Variance explained
Significance
N/A
Statistical confidence
Data points
303
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
+45%
No shift — both series at their actual dates.
249 overlapping points at this shift
Baseline
+45%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+45%
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%
101 periods · Return correlation when both series rose
Both Falling
+63%
65 periods · Return correlation when both series fell
Diverging
-57%
83 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
952
A: 0 / B: 952
Series A
SNDK
Stock · 303 raw → 303 prepared
Series B
COPX
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.1910
Linear regression slope.
Intercept
0.0005
Linear regression intercept.
Saved 4 days ago · ID: stock-copx_stock-sndk_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.