Correlation Analysis
Microsoft Corp vs CSX Corporation
MSFT vs CSX
+0.423
Moderate 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
CSX Corporation
↗CSX
Operating in the Eastern United States, Class I railroad CSX generated revenue of nearly $14.5 billion in 2024. On its more than 21,000 miles of track, CSX hauls shipments of coal (16% of consolidated revenue), chemicals (17%), intermodal containers (16%), automotive cargo (7%), and a diverse mix of other bulk and industrial merchandise.
Market cap 77.2B · 23,000 employees
Who Moves First
MSFT leads CSX by 6 days
MSFT tends to move before CSX.
Best correlation after shifting: +0.440 (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
+0.454
14 periods · Return correlation when both series rose
Both Falling
+0.585
9 periods · Return correlation when both series fell
Diverging
-0.806
12 periods · Return correlation when series moved apart
R-Squared
17.9%
Share of variance in one series explained by the other.
Trend Agreement
61.2%
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: [0.377, 0.468]
Time Series
Rebased to 100
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
CSX Corporation
CSX
Market cap 77.2B · 23,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
0.0140
Linear regression slope.
Intercept
28.2555
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 3 hours ago · ID: stock-msft-vs-stock-csx-daily-20260408-4aun4j