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Correlation
of values
+94%
In sync
of periods
67%
History
monthsmonths · through 2026-05
119
These move in the same direction about 67% of the time
When one swings, the other almost always swings by a closely matched amount (~89% 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
Flips between sync and inverse
Sometimes the two move together, sometimes opposite. Don't treat this as a stable signal.
Advanced
Statistics
In sync(i)
67%
Headline metric
Movement correlation(i)
+94%
Based on values
95% CI
N/A
Pipeline
Pipeline Summary
119 paired data points survived the monthly window.
Raw input
809
2,512
Normalized
809
2,512
Prepared
809
121
Aligned
119
119
Invalid removed
Likely range
R²(i)
89%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
119
Usable
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
+94%
No shift — both series at their actual dates.
119 overlapping points at this shift
Baseline
+94%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+94%
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
+15%
78 periods · Return correlation when both series rose
Both Falling
N/A
1 periods · Return correlation when both series fell
Diverging
-40%
39 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
692
A: 690 / B: 2
Series A
PCE Price Index
PCEPI
FRED · 809 raw → 809 prepared
Series B
S&P 500
SP500
FRED · 2,512 raw → 121 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
125.6686
Linear regression slope.
Intercept
-10073.1444
Linear regression intercept.
Saved 3 months ago · ID: fred-pcepi_fred-sp500_monthly_5y