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Correlation
of % moves
+19%
In sync
of periods
52%
History
daysdays · through 2026-09-24
589
These move in the same direction about 52% of the time
Their swing sizes only faintly line up (~3% 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.
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Mostly stable
The relationship drifts a little but stays in the same neighbourhood.
Explore
Advanced
Statistics
In sync(i)
52%
Headline metric
Movement correlation(i)
+19%
Based on % moves
95% CI
+11% → +26%
Likely range of correlation
Pipeline
Pipeline Summary
589 paired data points survived the daily window.
Raw input
1,254
589
Normalized
1,254
589
Prepared
1,254
589
Aligned
589
589
Invalid removed
R²(i)
3%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points(i)
587
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
+19%
No shift — both series at their actual dates.
587 overlapping points at this shift
Baseline
+19%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+19%
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
+37%
72 periods · Return correlation when both series rose
Both Falling
+53%
63 periods · Return correlation when both series fell
Diverging
-53%
113 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
665
A: 665 / B: 0
Series A
Western Digital Corp. (WDC)
WDC
Stock · 1,254 raw → 1,254 prepared
Series B
Velo3D, Inc. Common stock (VELO)
VELO
Stock · 589 raw → 589 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
11
Estimated crossover points between normalized spreads.
Slope
0.3426
Linear regression slope.
Intercept
0.0014
Linear regression intercept.
Saved 5 months ago · ID: stock-velo_stock-wdc_daily_5y
Explore
Top 10 by absolute correlation
Ranked across both sides of this comparison using the same dense row format as the single-symbol correlations view.