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Correlation
of % moves
+64%
In sync
of periods
70%
History
daysdays · through 2026-05-20
1,221
These move in the same direction about 70% of the time
When one swings, the other often swings by a similar amount (~41% 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)
70%
Headline metric
Movement correlation(i)
+64%
Based on % moves
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
1,221 paired data points survived the daily window.
Raw input
1,221
2,512
Normalized
1,221
2,512
Prepared
1,221
2,512
Aligned
1,221
1,221
Invalid removed
41%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
1,220
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
+64%
No shift — both series at their actual dates.
1,220 overlapping points at this shift
Baseline
+64%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+64%
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
+54%
81 periods · Return correlation when both series rose
Both Falling
+76%
51 periods · Return correlation when both series fell
Diverging
-31%
22 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,291
A: 0 / B: 1291
Series A
BK
Stock · 1,221 raw → 1,221 prepared
Series B
S&P 500
SP500
FRED · 2,512 raw → 2,512 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
9
Estimated crossover points between normalized spreads.
Slope
0.4457
Linear regression slope.
Intercept
0.0001
Linear regression intercept.
Saved 3 months ago · ID: fred-sp500_stock-bk_daily_5y