Correlation Analysis
Amazon.Com Inc vs Equifax, Incorporated
AMZN vs EFX
+0.513
Moderate positive
When one moves up, the other tends to follow.
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
Equifax, Incorporated
↗EFX
Along with Experian and TransUnion, Equifax is one of the leading credit bureaus in the United States. Equifax's credit reports provide credit histories on millions of consumers, and the firm's services are critical to lenders' credit decisions. In addition, about 40% of the firm's revenue comes from workforce solutions, which provides income verification and employer human resources services. Equifax generates about 25% of its revenue from outside the United States.
Market cap 22B · 15,000 employees
Time Series
Relative Performance
Who Moves First
EFX leads AMZN by 6 days
EFX tends to move before AMZN.
After testing 13 timing shifts, the strongest relationship was +0.529 (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
+0.538
13 periods · Return correlation when both series rose
Both Falling
-0.028
8 periods · Return correlation when both series fell
Diverging
-0.708
14 periods · Return correlation when series moved apart
R-Squared
26.3%
Share of variance in one series explained by the other.
Trend Agreement
62.4%
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: [0.471, 0.552]
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
Amazon.Com Inc
AMZN
Market cap 2.3T
Stock · 1,254 raw → 1,254 prepared
Series B
Equifax, Incorporated
EFX
Market cap 22B · 15,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
40
Estimated crossover points between normalized spreads.
Slope
0.4015
Linear regression slope.
Intercept
164.2501
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 5 hours ago · ID: stock-amzn-vs-stock-efx-daily-20260408-zkob9f