Correlation Analysis
DexCom, Inc. vs Johnson & Johnson
DXCM vs JNJ
-0.365
Light inverse
When one moves up, the other tends to move down.
DexCom, Inc.
↗DXCM
DexCom designs and commercializes continuous glucose monitoring systems for diabetic patients. CGM systems serve as an alternative to the traditional blood glucose meter process, and the company is evolving its CGM systems to provide integration with insulin pumps from Insulet and Tandem for automatic insulin delivery. DexCom's CGMs are available through medical equipment distributors as well as retail pharmacies.
Market cap 24.3B · 11,100 employees
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
Time Series
Relative Performance
Who Moves First
JNJ leads DXCM by 1 day
JNJ tends to move before DXCM.
After testing 13 timing shifts, the strongest relationship was -0.365 (they moved in opposite directions).
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
+0.113
7 periods · Return correlation when both series rose
Both Falling
-0.441
7 periods · Return correlation when both series fell
Diverging
-0.432
21 periods · Return correlation when series moved apart
R-Squared
13.3%
Share of variance in one series explained by the other.
Trend Agreement
53.8%
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: [-0.412, -0.316]
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
DexCom, Inc.
DXCM
Market cap 24.3B · 11,100 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Johnson & Johnson
JNJ
Market cap 580.4B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
35
Estimated crossover points between normalized spreads.
Slope
-0.2918
Linear regression slope.
Intercept
197.5108
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 4 hours ago · ID: stock-dxcm-vs-stock-jnj-daily