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Correlation
of % moves
-20%
In sync
of periods
40%
History
daysdays · through 2026-05-22
108
These move in the same direction about 40% of the time
Their swing sizes only faintly mirror each other (~4% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Unusual right now
Recently tighter 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.
Rock solid
The relationship barely changes from period to period — treat it as a reliable signal.
Advanced
Statistics
In sync(i)
40.2%
Headline metric
Movement correlation(i)
-20%
Based on % moves
95% CI
-37% → -1%
Likely range of correlation
Pipeline
Pipeline Summary
108 paired data points survived the daily window.
Raw input
108
1,253
Normalized
108
1,253
Prepared
108
1,253
Aligned
108
108
Invalid removed
R²(i)
3.9%
Variance explained
Significance
p < 0.05
Statistical confidence
Data points
108
Usable
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
-20%
No shift — both series at their actual dates.
107 overlapping points at this shift
Baseline
-20%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-20%
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
+4%
24 periods · Return correlation when both series rose
Both Falling
-6%
19 periods · Return correlation when both series fell
Diverging
-60%
64 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,145
A: 0 / B: 1145
Series A
Medline Inc. Class A common stock (MDLN)
MDLN
Stock · 108 raw → 108 prepared
Series B
Centene Corporation (CNC)
CNC
Stock · 1,253 raw → 1,253 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
13
Estimated crossover points between normalized spreads.
Slope
-0.2532
Linear regression slope.
Intercept
0.0037
Linear regression intercept.
Saved 2 weeks ago · ID: stock-cnc_stock-mdln_daily_5y