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Correlation
of % moves
+37%
In sync
of periods
67%
History
daysdays · through 2026-05-22
337
These move in the same direction about 67% 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.
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)
66.7%
Headline metric
Movement correlation(i)
+37%
Based on % moves
95% CI
+28% → +46%
Likely range of correlation
Pipeline
Pipeline Summary
337 paired data points survived the daily window.
Raw input
1,191
337
Normalized
1,191
337
Prepared
1,191
337
Aligned
337
337
Invalid removed
R²(i)
14.0%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
337
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.
336 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
+20%
92 periods · Return correlation when both series rose
Both Falling
+17%
80 periods · Return correlation when both series fell
Diverging
-33%
77 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
854
A: 854 / B: 0
Series A
Rocket Lab Corporation Common Stock (RKLB)
RKLB
Stock · 1,191 raw → 1,191 prepared
Series B
Block, Inc. (XYZ)
XYZ
Stock · 337 raw → 337 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
9
Estimated crossover points between normalized spreads.
Slope
0.2316
Linear regression slope.
Intercept
-0.0018
Linear regression intercept.
Saved 2 weeks ago · ID: stock-rklb_stock-xyz_daily_5y