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Correlation
of values
+82%
In sync
of periods
57%
History
monthsmonths · through 2026-07
666
These move in the same direction about 57% of the time
When one swings, the other almost always swings by a closely matched amount (~68% of the pattern is shared).
A faint pattern — interesting as colour, not strong enough to act on alone.
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
Decouples in drawdowns
The relationship weakens when both prices are falling — don't count on this pair as a hedge under stress.
Advanced
Statistics
In sync(i)
57%
Headline metric
Movement correlation(i)
+82%
Based on values
95% CI
+80% → +85%
Likely range of correlation
Pipeline
Pipeline Summary
666 paired data points survived the monthly window.
Raw input
811
14,011
Normalized
811
14,011
Prepared
811
668
Aligned
666
666
Invalid removed
R²(i)
68%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points(i)
666
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: -18 to 18 months.
Selected shift
No shift
Correlation at this shift
+82%
No shift — both series at their actual dates.
666 overlapping points at this shift
Baseline
+82%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+82%
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
+71%
17 periods · Return correlation when both series rose
Both Falling
-47%
5 periods · Return correlation when both series fell
Diverging
-60%
18 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
147
A: 145 / B: 2
Series A
Real Disposable Income
DSPIC96
FRED · 811 raw → 811 prepared
Series B
NASDAQ Composite
NASDAQCOM
FRED · 14,011 raw → 668 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
8
Estimated crossover points between normalized spreads.
Slope
0.9850
Linear regression slope.
Intercept
-6380.4810
Linear regression intercept.
Saved 4 months ago · ID: fred-dspic96_fred-nasdaqcom_monthly_5y