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The Cigna Group (CI) vs CPI: Used Cars & Trucks
Correlation
of % moves
-18%
In sync
of periods
36%
History
monthsmonths · through 2026-04
59
These move in the same direction about 36% of the time
Their swing sizes only faintly mirror each other (~3% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
CI moves ~3 months before CPI: Used Cars & Trucks
Watch CI for an early read on CPI: Used Cars & Trucks.
Decouples in drawdowns
The relationship weakens when both prices are falling — don't count on this pair as a hedge under stress.
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)
36.2%
Headline metric
Movement correlation(i)
-18%
Based on % moves
95% CI
-42% → +8%
Likely range of correlation
Pipeline
Pipeline Summary
59 paired data points survived the monthly window.
Raw input
1,254
880
Normalized
1,254
880
Prepared
60
880
Aligned
59
59
Invalid removed
R²(i)
3.2%
Variance explained
Significance
n.s.
Statistical confidence
Data points
59
Thin
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
+3 months
Correlation at this shift
-48%
+30% stronger than no-shift baseline
CPI: Used Cars & Trucks shifted 3 months earlier. Reads: "Does The Cigna Group (CI) today line up with CPI: Used Cars & Trucks 3 months from now?"
55 overlapping points at this shift
Baseline
-18%
No-shift correlation, matching the main time-series chart above.
Peak shift
+3 months
-48%
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
-42%
9 periods · Return correlation when both series rose
Both Falling
-13%
12 periods · Return correlation when both series fell
Diverging
-65%
37 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
822
A: 1 / B: 821
Series A
The Cigna Group (CI)
CI
Stock · 1,254 raw → 60 prepared
Series B
CPI: Used Cars & Trucks
CUSR0000SETA02
FRED · 880 raw → 880 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
9
Estimated crossover points between normalized spreads.
Slope
-0.0601
Linear regression slope.
Intercept
-0.0012
Linear regression intercept.
Saved 3 weeks ago · ID: fred-cusr0000seta02_stock-ci_monthly_5y