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Correlation
of values
+83%
In sync
of periods
57%
History
monthsmonths · through 2026-05
664
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)
+83%
Based on values
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
664 paired data points survived the monthly window.
Raw input
809
13,971
Normalized
809
13,971
Prepared
809
666
Aligned
664
664
Invalid removed
68%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
664
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
+83%
No shift — both series at their actual dates.
664 overlapping points at this shift
Baseline
+83%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+83%
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
+65%
11 periods · Return correlation when both series rose
Both Falling
-17%
9 periods · Return correlation when both series fell
Diverging
-23%
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 · 809 raw → 809 prepared
Series B
NASDAQ Composite
NASDAQCOM
FRED · 13,971 raw → 666 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
8
Estimated crossover points between normalized spreads.
Slope
0.9647
Linear regression slope.
Intercept
-6223.6336
Linear regression intercept.
Saved 3 months ago · ID: fred-dspic96_fred-nasdaqcom_monthly_5y