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Correlation
of values
+95%
In sync
of periods
68%
History
monthsmonths · through 2026-04
118
These move in the same direction about 68% of the time
When one swings, the other almost always swings by a closely matched amount (~90% 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
Slipping looser
The recent pattern is looser than its long-run baseline — keep an eye on whether this sticks.
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)
68.1%
Headline metric
Movement correlation(i)
+95%
Based on values
95% CI
+93% → +96%
Pipeline
Pipeline Summary
118 paired data points survived the monthly window.
Raw input
831
2,513
Normalized
831
2,513
Prepared
831
121
Aligned
118
118
Invalid removed
Likely range of correlation
R²(i)
89.8%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
118
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
+95%
No shift — both series at their actual dates.
118 overlapping points at this shift
Baseline
+95%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+95%
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
+17%
78 periods · Return correlation when both series rose
Both Falling
N/A
1 periods · Return correlation when both series fell
Diverging
-53%
37 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
716
A: 713 / B: 3
Series A
US Core CPI
CPILFESL
FRED · 831 raw → 831 prepared
Series B
S&P 500
SP500
FRED · 2,513 raw → 121 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
44.9761
Linear regression slope.
Intercept
-8866.4162
Linear regression intercept.
Saved last month · ID: fred-cpilfesl_fred-sp500_monthly_5y