Correlation
of % moves
+20%
In sync
of periods
55%
History
daysdays · through 2026-05-07
1,088
These move in the same direction about 55% of the time
Their swing sizes only faintly line up (~4% 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
Slipping looser
The recent pattern is looser than its long-run baseline — keep an eye on whether this sticks.
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.
Explore
Advanced
Statistics
Approximate (legacy record)In sync(i)
55.3%
Headline metric
Movement correlation(i)
+20%
Based on % moves
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
1,088 paired data points survived the daily window.
Raw input
1,255
1,088
Normalized
1,255
1,088
Prepared
1,255
1,088
Aligned
1,088
1,088
Invalid removed
R²(i)
4.0%
Variance explained
Significance
N/A
Statistical confidence
Data points
1,088
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
+20%
No shift — both series at their actual dates.
249 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
+40%
69 periods · Return correlation when both series rose
Both Falling
-9%
70 periods · Return correlation when both series fell
Diverging
-43%
110 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
167
A: 167 / B: 0
Series A
COST
Stock · 1,255 raw → 1,255 prepared
Series B
POAHY
Stock · 1,088 raw → 1,088 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
0.2059
Linear regression slope.
Intercept
-0.0043
Linear regression intercept.
Saved 4 days ago · ID: stock-cost_stock-poahy_5y
Explore
Top 10 by absolute correlation
Ranked across both sides of this comparison using the same dense row format as the single-symbol correlations view.