Correlation Analysis
Johnson & Johnson vs Western Digital Corp.
JNJ vs WDC
+0.842
Strong positive
When one moves up, the other tends to follow.
Johnson & Johnson
↗JNJ
Johnson & Johnson is the world's largest and most diverse healthcare firm. It has two divisions: innovative medicine and medtech. These now represent all of the company's sales following the divestment of the consumer business, Kenvue, in 2023. After restructurings in 2023-24, the drug division focuses on three main therapeutic areas: immunology, oncology, and neurology. Geographically, just over half of total revenue is generated in the United States.
Market cap 580.4B
Western Digital Corp.
↗WDC
Western Digital is a leading vertically integrated supplier of hard disk drives. The HDD market is a practical duopoly, with Western Digital and Seagate being the two largest players. Western Digital designs and manufactures its HDDs, with much of the manufacturing and workforce located in Asia. The primary consumers of HDDs are data centers.
Market cap 103.1B · 40,000 employees
Time Series
Relative Performance
Who Moves First
WDC leads JNJ by 6 days
WDC tends to move before JNJ.
After testing 13 timing shifts, the strongest relationship was +0.844 (they moved in the same direction).
Do They Crash Together?
Correlation by Market Regime
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
+0.951
10 periods · Return correlation when both series rose
Both Falling
-0.236
8 periods · Return correlation when both series fell
Diverging
-0.617
17 periods · Return correlation when series moved apart
R-Squared
70.9%
Share of variance in one series explained by the other.
Trend Agreement
50.5%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,254
Deep shared window — 1,254 usable pairs.
Significance
p < 0.001
95% CI: [0.825, 0.857]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired data points survived the daily window.
Raw input
1,254
1,254
Normalized
1,254
1,254
Prepared
1,254
1,254
Aligned
1,254
1,254
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
Johnson & Johnson
JNJ
Market cap 580.4B
Stock · 1,254 raw → 1,254 prepared
Series B
Western Digital Corp.
WDC
Market cap 103.1B · 40,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
38
Estimated crossover points between normalized spreads.
Slope
2.2661
Linear regression slope.
Intercept
-310.9663
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-jnj-vs-stock-wdc-daily