Correlation Analysis
Amazon.Com Inc vs Paccar Inc
AMZN vs PCAR
+0.651
Strong 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
Paccar Inc
↗PCAR
Paccar is a leading manufacturer of medium- and heavy-duty trucks under the premium nameplates Kenworth and Peterbilt, which are primarily sold in the Americas and Australia, and DAF, which primarily services Europe and South America. The trucks segment (74% sales) goes to market through a network of 2,200 independent dealers. Paccar maintains an internal finance subsidiary that provides retail and wholesale financing for customers and dealers (6% sales). In recent years, Paccar has aggressively expanded its parts business (20% of sales), including engines, axles, and transmissions for its own truck brands as well as independent producers. The company commands 30% of the Class 8 market share in North America and 15% of the heavy-duty market share in Europe.
Market cap 62.2B · 25,900 employees
Time Series
Rebased to 100
Who Moves First
PCAR leads AMZN by 6 days
PCAR tends to move before AMZN.
Best correlation after shifting: +0.654 (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
-0.180
14 periods · Return correlation when both series rose
Both Falling
+0.369
6 periods · Return correlation when both series fell
Diverging
-0.659
15 periods · Return correlation when series moved apart
R-Squared
42.4%
Share of variance in one series explained by the other.
Trend Agreement
55.6%
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: [0.618, 0.682]
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
Paccar Inc
PCAR
Market cap 62.2B · 25,900 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
46
Estimated crossover points between normalized spreads.
Slope
0.3355
Linear regression slope.
Intercept
28.2406
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 3 hours ago · ID: stock-amzn-vs-stock-pcar-daily-20260408-2w8abu