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Correlation
of % moves
-17%
In sync
of periods
42%
History
daysdays · through 2026-05-22
108
These move in the same direction about 42% of the time
Their swing sizes only faintly mirror each other (~3% of the pattern is shared).
A faint pattern — interesting as colour, not strong enough to act on alone.
Both lines start at the same point — easy to compare when growth rates are similar.
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.
Advanced
Statistics
In sync(i)
42.1%
Headline metric
Movement correlation(i)
-17%
Based on % moves
95% CI
-35% → +2%
Likely range of correlation
Pipeline
Pipeline Summary
108 paired data points survived the daily window.
Raw input
108
1,254
Normalized
108
1,254
Prepared
108
1,254
Aligned
108
108
Invalid removed
R²(i)
2.8%
Variance explained
Significance
n.s.
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
-17%
No shift — both series at their actual dates.
107 overlapping points at this shift
Baseline
-17%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-17%
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
+3%
25 periods · Return correlation when both series rose
Both Falling
+37%
20 periods · Return correlation when both series fell
Diverging
-51%
62 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,146
A: 0 / B: 1146
Series A
Medline Inc. Class A common stock (MDLN)
MDLN
Stock · 108 raw → 108 prepared
Series B
Humana Inc. (HUM)
HUM
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
2
Estimated crossover points between normalized spreads.
Slope
-0.2241
Linear regression slope.
Intercept
0.0014
Linear regression intercept.
Saved 2 weeks ago · ID: stock-hum_stock-mdln_daily_5y