Correlation Analysis
Amazon.Com Inc vs UNITEDHEALTH GROUP INCORPORATED (Delaware)
AMZN vs UNH
-0.505
Moderate inverse
When one moves up, the other tends to move down.
Amazon.Com Inc
↗AMZN
Amazon is the leading online retailer and marketplace for third party sellers. Retail related revenue represents approximately 74% of total, followed by Amazon Web Services (17%), and advertising services (9%). International segments constitute 22% of Amazon's total revenue, led by Germany, the United Kingdom, and Japan.
Market cap 2.3T
UNITEDHEALTH GROUP INCORPORATED (Delaware)
↗UNH
UnitedHealth Group is one of the largest private health insurers and provides medical benefits to about 51 million members globally, including 1 million outside the US as of December 2025. As a leader in employer-sponsored, self-directed, and government-backed insurance plans, UnitedHealth has obtained massive scale in medical insurance. Along with its insurance assets, UnitedHealth's Optum franchises help create a healthcare services colossus that spans everything from pharmaceutical benefits to providing outpatient care and analytics to affiliates and third parties.
Market cap 255.4B
Time Series
Rebased to 100
Who Moves First
AMZN leads UNH by 6 days
AMZN tends to move before UNH.
Best correlation after shifting: -0.510 (13 shifts scanned)
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
-0.737
12 periods · Return correlation when both series rose
Both Falling
+0.105
7 periods · Return correlation when both series fell
Diverging
-0.762
16 periods · Return correlation when series moved apart
R-Squared
25.5%
Share of variance in one series explained by the other.
Trend Agreement
52.5%
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: [-0.545, -0.462]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired observations 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
Amazon.Com Inc
AMZN
Market cap 2.3T
Stock · 1,254 raw → 1,254 prepared
Series B
UNITEDHEALTH GROUP INCORPORATED (Delaware)
UNH
Market cap 255.4B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
20
Estimated crossover points between normalized spreads.
Slope
-1.0185
Linear regression slope.
Intercept
632.8413
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
AMZN
Amazon.Com Inc
Highest
+0.941
Grayscale Bitcoin Trust ETF
GBTC · 1,066 observations
Lowest
-0.877
Humana Inc.
HUM · 1,254 observations
UNH
UNITEDHEALTH GROUP INCORPORATED (Delaware)
Highest
-0.079
Exxon Mobil Corporation
XOM · 1,254 observations
Lowest
-0.611
Micron Technology, Inc.
MU · 1,254 observations
Saved 3 hours ago · ID: stock-amzn-vs-stock-unh-daily-20260408-4xmkjk