Correlation Analysis
Microsoft Corp vs Paccar Inc
MSFT vs PCAR
+0.812
Strong positive
When one moves up, the other tends to follow.
Microsoft Corp
↗MSFT
Microsoft develops and licenses consumer and enterprise software. It is known for its Windows operating systems and Office productivity suite. The company is organized into three equally sized broad segments: productivity and business processes (legacy Microsoft Office, cloud-based Office 365, Exchange, SharePoint, Skype, LinkedIn, Dynamics), intelligence cloud (infrastructure- and platform-as-a-service offerings Azure, Windows Server OS, SQL Server), and more personal computing (Windows Client, Xbox, Bing search, display advertising, and Surface laptops, tablets, and desktops).
Market cap 2.8T
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
MSFT leads PCAR by 6 days
MSFT tends to move before PCAR.
Best correlation after shifting: +0.816 (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
-0.075
14 periods · Return correlation when both series rose
Both Falling
+0.842
7 periods · Return correlation when both series fell
Diverging
-0.707
14 periods · Return correlation when series moved apart
R-Squared
65.9%
Share of variance in one series explained by the other.
Trend Agreement
58.2%
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: [0.792, 0.830]
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
Microsoft Corp
MSFT
Market cap 2.8T
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
34
Estimated crossover points between normalized spreads.
Slope
0.2103
Linear regression slope.
Intercept
8.8096
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 3 hours ago · ID: stock-msft-vs-stock-pcar-daily-20260408-1cr2if