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Correlation
of % moves
+37%
In sync
of periods
65%
History
daysdays · through 2026-05-22
545
These move in the same direction about 65% of the time
Their swing sizes only faintly line up (~14% of the pattern is shared).
Strong enough to use as a signal — check the stability and regime notes below before relying on it.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Rock solid
The relationship barely changes from period to period — treat it as a reliable signal.
Advanced
Statistics
In sync(i)
65.1%
Headline metric
Movement correlation(i)
+37%
Based on % moves
95% CI
+30% → +44%
Likely range of correlation
Pipeline
Pipeline Summary
545 paired data points survived the daily window.
Raw input
546
545
Normalized
546
545
Prepared
546
545
Aligned
545
545
Invalid removed
R²(i)
14.0%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
545
Robust
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: -6 to 6 days.
Selected shift
No shift
Correlation at this shift
+37%
No shift — both series at their actual dates.
544 overlapping points at this shift
Baseline
+37%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+37%
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
+13%
96 periods · Return correlation when both series rose
Both Falling
+22%
93 periods · Return correlation when both series fell
Diverging
-40%
60 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1
A: 1 / B: 0
Series A
Astera Labs, Inc. Common Stock (ALAB)
ALAB
Stock · 546 raw → 546 prepared
Series B
Reddit, Inc. (RDDT)
RDDT
Stock · 545 raw → 545 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
28
Estimated crossover points between normalized spreads.
Slope
0.3222
Linear regression slope.
Intercept
0.0010
Linear regression intercept.
Saved 2 weeks ago · ID: stock-alab_stock-rddt_daily_5y