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Regeneron Pharmaceuticals Inc (REGN) vs CPI: Used Cars & Trucks
Correlation
of % moves
-32%
In sync
of periods
40%
History
monthsmonths · through 2026-04
59
These move in the same direction about 40% of the time
Their swing sizes only faintly mirror each other (~10% 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
Slipping tighter
The recent pattern is tighter than its long-run baseline — keep an eye on whether this sticks.
CPI: Used Cars & Trucks moves ~18 months before REGN
Watch CPI: Used Cars & Trucks for an early read on REGN.
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
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)
39.7%
Headline metric
Movement correlation(i)
-32%
Based on % moves
95% CI
-54% → -7%
Likely range of correlation
Pipeline
Pipeline Summary
59 paired data points survived the monthly window.
Raw input
1,255
880
Normalized
1,255
880
Prepared
61
880
Aligned
59
59
Invalid removed
R²(i)
10.4%
Variance explained
Significance
p < 0.05
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
-18 months
Correlation at this shift
-42%
+9% stronger than no-shift baseline
CPI: Used Cars & Trucks shifted 18 months later. Reads: "Does Regeneron Pharmaceuticals Inc (REGN) today line up with CPI: Used Cars & Trucks 18 months ago?"
40 overlapping points at this shift
Baseline
-32%
No-shift correlation, matching the main time-series chart above.
Peak shift
-18 months
-42%
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
+12%
10 periods · Return correlation when both series rose
Both Falling
-3%
13 periods · Return correlation when both series fell
Diverging
-62%
35 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
823
A: 2 / B: 821
Series A
Regeneron Pharmaceuticals Inc (REGN)
REGN
Stock · 1,255 raw → 61 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
5
Estimated crossover points between normalized spreads.
Slope
-0.0719
Linear regression slope.
Intercept
-0.0010
Linear regression intercept.
Saved last month · ID: fred-cusr0000seta02_stock-regn_monthly_5y