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Correlation
of % moves
+31%
In sync
of periods
63%
History
daysdays · through 2026-05-22
545
These move in the same direction about 63% of the time
Their swing sizes only faintly line up (~9% 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
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)
62.8%
Headline metric
Movement correlation(i)
+31%
Based on % moves
95% CI
+23% → +38%
Likely range of correlation
Pipeline
Pipeline Summary
545 paired data points survived the daily window.
Raw input
1,254
545
Normalized
1,254
545
Prepared
1,254
545
Aligned
545
545
Invalid removed
R²(i)
9.4%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
545
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
+31%
No shift — both series at their actual dates.
544 overlapping points at this shift
Baseline
+31%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+31%
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
+14%
90 periods · Return correlation when both series rose
Both Falling
+44%
63 periods · Return correlation when both series fell
Diverging
-43%
96 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
709
A: 709 / B: 0
Series A
Hewlett Packard Enterprise Company (HPE)
HPE
Stock · 1,254 raw → 1,254 prepared
Series B
Reddit, Inc. (RDDT)
RDDT
Stock · 545 raw → 545 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
20
Estimated crossover points between normalized spreads.
Slope
0.5615
Linear regression slope.
Intercept
0.0011
Linear regression intercept.
Saved 2 weeks ago · ID: stock-hpe_stock-rddt_daily_5y