Loading market view
Loading market view
Loading correlations
Correlation
of % moves
+43%
In sync
of periods
64%
History
daysdays · through 2026-05-28
317
These move in the same direction about 64% of the time
Their swing sizes loosely line up (~18% 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
Decouples in drawdowns
The relationship weakens when both prices are falling — don't count on this pair as a hedge under stress.
Mostly stable
The relationship drifts a little but stays in the same neighbourhood.
Advanced
Statistics
In sync(i)
64.2%
Headline metric
Movement correlation(i)
+43%
Based on % moves
95% CI
+33% → +52%
Likely range of correlation
Pipeline
Pipeline Summary
317 paired data points survived the daily window.
Raw input
317
1,254
Normalized
317
1,254
Prepared
317
1,254
Aligned
317
317
Invalid removed
R²(i)
18.4%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
317
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
+43%
No shift — both series at their actual dates.
316 overlapping points at this shift
Baseline
+43%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+43%
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
+38%
97 periods · Return correlation when both series rose
Both Falling
+7%
65 periods · Return correlation when both series fell
Diverging
-43%
87 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
937
A: 0 / B: 937
Series A
Sandisk Corporation Common Stock (SNDK)
SNDK
Stock · 317 raw → 317 prepared
Series B
Rockwell Automation, Inc. (ROK)
ROK
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.1452
Linear regression slope.
Intercept
-0.0002
Linear regression intercept.
Saved 3 weeks ago · ID: stock-rok_stock-sndk_daily_5y