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Correlation
of % moves
+46%
In sync
of periods
64%
History
daysdays · through 2026-06-11
559
These move in the same direction about 64% of the time
Their swing sizes loosely line up (~21% of the pattern is shared).
A real but noisy link — useful as context, risky as a standalone signal.
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.
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)
64.3%
Headline metric
Movement correlation(i)
+46%
Based on % moves
95% CI
+39% → +52%
Likely range of correlation
Pipeline
Pipeline Summary
559 paired data points survived the daily window.
Raw input
1,255
559
Normalized
1,255
559
Prepared
1,255
559
Aligned
559
559
Invalid removed
R²(i)
21.3%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
559
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
+46%
No shift — both series at their actual dates.
558 overlapping points at this shift
Baseline
+46%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+46%
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
+30%
105 periods · Return correlation when both series rose
Both Falling
+33%
80 periods · Return correlation when both series fell
Diverging
-52%
64 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
696
A: 696 / B: 0
Series A
Amphenol Corporation (APH)
APH
Stock · 1,255 raw → 1,255 prepared
Series B
Astera Labs, Inc. Common Stock (ALAB)
ALAB
Stock · 559 raw → 559 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
35
Estimated crossover points between normalized spreads.
Slope
1.0978
Linear regression slope.
Intercept
0.0012
Linear regression intercept.
Saved last month · ID: stock-alab_stock-aph_daily_5y