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Correlation
of % moves
-23%
In sync
of periods
39%
History
daysdays · through 2026-06-11
327
These move in the same direction about 39% of the time
Their swing sizes only faintly mirror each other (~6% 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
Unusual right now
Recently looser than usual — the pair is behaving differently than its long-run pattern.
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.
Advanced
Statistics
In sync(i)
39.2%
Headline metric
Movement correlation(i)
-23%
Based on % moves
95% CI
-33% → -13%
Likely range of correlation
Pipeline
Pipeline Summary
327 paired data points survived the daily window.
Raw input
327
1,255
Normalized
327
1,255
Prepared
327
1,255
Aligned
327
327
Invalid removed
R²(i)
5.5%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
327
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
-23%
No shift — both series at their actual dates.
326 overlapping points at this shift
Baseline
-23%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-23%
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
+2%
59 periods · Return correlation when both series rose
Both Falling
-13%
40 periods · Return correlation when both series fell
Diverging
-46%
150 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
928
A: 0 / B: 928
Series A
Sandisk Corporation Common Stock (SNDK)
SNDK
Stock · 327 raw → 327 prepared
Series B
The Kroger Co. (KR)
KR
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
-0.0663
Linear regression slope.
Intercept
0.0007
Linear regression intercept.
Saved last month · ID: stock-kr_stock-sndk_daily_5y