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Reddit, Inc. (RDDT) vs Case-Shiller Home Price Index
Correlation
of % moves
-40%
In sync
of periods
52%
History
monthsmonths · through 2026-06
28
These move in the same direction about 52% of the time
Their swing sizes only faintly mirror each other (~16% of the pattern is shared).
Roughly random — these don't track each other in a meaningful way.
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 tighter
The recent pattern is tighter than its long-run baseline — keep an eye on whether this sticks.
Case-Shiller Home Price Index moves ~11 months before RDDT
Watch Case-Shiller Home Price Index 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)
52%
Headline metric
Movement correlation(i)
-40%
Based on % moves
95% CI
-68% → -2%
Pipeline
Pipeline Summary
28 paired data points survived the monthly window.
Raw input
618
474
Normalized
618
474
Prepared
31
474
Aligned
28
28
Invalid removed
Likely range of correlation
R²(i)
16%
Variance explained
Significance
p < 0.05
Statistical confidence
Data points(i)
27
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: -17 to 17 months.
Selected shift
-11 months
Correlation at this shift
-72%
+32% stronger than no-shift baseline
Case-Shiller Home Price Index shifted 11 months later. Reads: "Does Reddit, Inc. (RDDT) today line up with Case-Shiller Home Price Index 11 months ago?"
16 overlapping points at this shift
Baseline
-40%
No-shift correlation, matching the main time-series chart above.
Peak shift
-11 months
-72%
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
-29%
10 periods · Return correlation when both series rose
Both Falling
N/A
4 periods · Return correlation when both series fell
Diverging
-67%
13 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
449
A: 3 / B: 446
Series A
Reddit, Inc. (RDDT)
RDDT
Stock · 618 raw → 31 prepared
Series B
Case-Shiller Home Price Index
CSUSHPINSA
FRED · 474 raw → 474 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
-0.0083
Linear regression slope.
Intercept
0.0026
Linear regression intercept.
Saved 4 months ago · ID: fred-csushpinsa_stock-rddt_monthly_5y