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Western Digital Corp. (WDC) vs Dow Jones Industrial Average
Correlation
of % moves
+46%
In sync
of periods
68%
History
daysdays · through 2026-05-21
1,254
These move in the same direction about 68% of the time
Their swing sizes loosely line up (~22% 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.
Tighter in drawdowns
The relationship is stronger when both prices are falling than when both are rising — typical risk-off behaviour.
Mostly stable
The relationship drifts a little but stays in the same neighbourhood.
Advanced
Statistics
In sync(i)
68.3%
Headline metric
Movement correlation(i)
+46%
Based on % moves
95% CI
+42% → +51%
Likely range of correlation
Pipeline
Pipeline Summary
1,254 paired data points survived the daily window.
Raw input
1,255
2,514
Normalized
1,255
2,514
Prepared
1,255
2,514
Aligned
1,254
1,254
Invalid removed
R²(i)
21.5%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
1,254
Deep
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.
1,253 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
+10%
106 periods · Return correlation when both series rose
Both Falling
+31%
80 periods · Return correlation when both series fell
Diverging
-40%
63 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,261
A: 1 / B: 1260
Series A
WDC
Stock · 1,255 raw → 1,255 prepared
Series B
Dow Jones Industrial Average
DJIA
FRED · 2,514 raw → 2,514 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
17
Estimated crossover points between normalized spreads.
Slope
0.1367
Linear regression slope.
Intercept
0.0001
Linear regression intercept.
Saved 2 weeks ago · ID: fred-djia_stock-wdc_daily_5y