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Reddit, Inc. (RDDT) vs US Core CPI
Correlation
of % moves
+31%
In sync
of periods
67%
History
monthsmonths · through 2026-04
25
These move in the same direction about 67% of the time
Their swing sizes only faintly line up (~10% 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
US Core CPI moves ~10 months before RDDT
Watch US Core CPI for an early read on RDDT.
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)
66.7%
Headline metric
Movement correlation(i)
+31%
Based on % moves
95% CI
-10% → +64%
Pipeline
Pipeline Summary
25 paired data points survived the monthly window.
Raw input
545
831
Normalized
545
831
Prepared
27
831
Aligned
25
25
Invalid removed
Likely range of correlation
R²(i)
9.8%
Variance explained
Significance
n.s.
Statistical confidence
Data points
25
Limited
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: -14 to 14 months.
Selected shift
-10 months
Correlation at this shift
+73%
+42% stronger than no-shift baseline
US Core CPI shifted 10 months later. Reads: "Does Reddit, Inc. (RDDT) today line up with US Core CPI 10 months ago?"
14 overlapping points at this shift
Baseline
+31%
No-shift correlation, matching the main time-series chart above.
Peak shift
-10 months
+73%
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
+26%
16 periods · Return correlation when both series rose
Both Falling
N/A
0 periods · Return correlation when both series fell
Diverging
+66%
8 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
808
A: 2 / B: 806
Series A
Reddit, Inc. (RDDT)
RDDT
Stock · 545 raw → 27 prepared
Series B
US Core CPI
CPILFESL
FRED · 831 raw → 831 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
0.0012
Linear regression slope.
Intercept
0.0023
Linear regression intercept.
Saved 2 weeks ago · ID: fred-cpilfesl_stock-rddt_monthly_5y