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Correlation
of % moves
+34%
In sync
of periods
66%
History
daysdays · through 2026-06-11
1,255
These move in the same direction about 66% of the time
Their swing sizes only faintly line up (~11% of the pattern is shared).
Strong enough to use as a signal — check the stability and regime notes below before relying on it.
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.
Advanced
Statistics
In sync(i)
66.1%
Headline metric
Movement correlation(i)
+34%
Based on % moves
95% CI
+29% → +39%
Likely range of correlation
Pipeline
Pipeline Summary
1,255 paired data points survived the daily window.
Raw input
1,255
1,255
Normalized
1,255
1,255
Prepared
1,255
1,255
Aligned
1,255
1,255
Invalid removed
R²(i)
11.5%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
1,255
Deep
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
+34%
No shift — both series at their actual dates.
1,254 overlapping points at this shift
Baseline
+34%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+34%
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
-6%
56 periods · Return correlation when both series rose
Both Falling
+32%
54 periods · Return correlation when both series fell
Diverging
-47%
29 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
ResMed Inc. (RMD)
RMD
Stock · 1,255 raw → 1,255 prepared
Series B
PPG Industries, Inc. (PPG)
PPG
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
42
Estimated crossover points between normalized spreads.
Slope
0.3014
Linear regression slope.
Intercept
-0.0003
Linear regression intercept.
Saved last month · ID: stock-ppg_stock-rmd_daily_5y