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Correlation
of % moves
+46%
In sync
of periods
72%
History
daysdays · through 2026-09-10
644
These move in the same direction about 72% of the time
Their swing sizes loosely line up (~21% of the pattern is shared).
Strong enough to use as a signal — check the stability and regime notes below before relying on it.
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
Slipping tighter
The recent pattern is tighter 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.
Rock solid
The relationship barely changes from period to period — treat it as a reliable signal.
Advanced
Statistics
In sync(i)
72%
Headline metric
Movement correlation(i)
+46%
Based on % moves
95% CI
+40% → +52%
Likely range of correlation
Pipeline
Pipeline Summary
644 paired data points survived the daily window.
Raw input
1,254
644
Normalized
1,254
644
Prepared
1,254
644
Aligned
644
644
Invalid removed
R²(i)
21%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points(i)
642
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
+46%
No shift — both series at their actual dates.
642 overlapping points at this shift
Baseline
+46%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+46%
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
+45%
93 periods · Return correlation when both series rose
Both Falling
+20%
103 periods · Return correlation when both series fell
Diverging
-42%
48 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
610
A: 610 / B: 0
Series A
PayPal Holdings, Inc. Common Stock (PYPL)
PYPL
Stock · 1,254 raw → 1,254 prepared
Series B
Fiserv, Inc. Common Stock (FISV)
FISV
Stock · 644 raw → 644 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
0.3033
Linear regression slope.
Intercept
0.0004
Linear regression intercept.
Saved 4 months ago · ID: stock-fisv_stock-pypl_daily_5y