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Correlation
of % moves
+79%
In sync
of periods
81%
History
daysdays · through 2026-05-20
1,177
These move in the same direction about 81% of the time
When one swings, the other often swings by a similar amount (~63% 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)
81%
Headline metric
Movement correlation(i)
+79%
Based on % moves
95% CI
+77% → +81%
Likely range of correlation
Pipeline
Pipeline Summary
1,177 paired data points survived the daily window.
Raw input
1,177
1,254
Normalized
1,177
1,254
Prepared
1,177
1,254
Aligned
1,177
1,177
Invalid removed
R²(i)
63%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points(i)
1,176
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
+79%
No shift — both series at their actual dates.
1,176 overlapping points at this shift
Baseline
+79%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+79%
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
+36%
75 periods · Return correlation when both series rose
Both Falling
+70%
74 periods · Return correlation when both series fell
Diverging
-76%
7 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
77
A: 0 / B: 77
Series A
BK
Stock · 1,177 raw → 1,177 prepared
Series B
XLF
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.6007
Linear regression slope.
Intercept
-0.0002
Linear regression intercept.
Saved 2 weeks ago · ID: stock-bk_stock-xlf_daily_5y