Correlation Analysis
Microsoft Corp vs Steel Dynamics Inc
MSFT vs STLD
+0.730
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
Steel Dynamics Inc
↗STLD
Steel Dynamics Inc operates as a domestic steel producer and metal recycler in the United States. The company's product portfolio comprises hot rolled sheet, hot rolled plate, painted sheet products, cold rolled sheet, and others. Its reportable segments are steel operations, metals recycling operations, steel fabrication operations, and aluminum operations. Maximum revenue is generated from its steel operations segment, which consists of manufacturing various steel products and numerous coating operations. Its primary sources of revenue are currently from the manufacture and sale of steel products, the processing and sale of recycled ferrous and nonferrous metals, and the fabrication and sale of steel joists and deck products.
Market cap 25.5B · 14,400 employees
Time Series
Relative Performance
Who Moves First
MSFT leads STLD by 6 days
MSFT tends to move before STLD.
After testing 13 timing shifts, the strongest relationship was +0.736 (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
-0.013
12 periods · Return correlation when both series rose
Both Falling
+0.731
6 periods · Return correlation when both series fell
Diverging
-0.683
17 periods · Return correlation when series moved apart
R-Squared
53.3%
Share of variance in one series explained by the other.
Trend Agreement
57.9%
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: [0.703, 0.755]
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
Microsoft Corp
MSFT
Market cap 2.8T
Stock · 1,254 raw → 1,254 prepared
Series B
Steel Dynamics Inc
STLD
Market cap 25.5B · 14,400 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
14
Estimated crossover points between normalized spreads.
Slope
0.2907
Linear regression slope.
Intercept
5.0913
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 5 hours ago · ID: stock-msft-vs-stock-stld-daily-20260408-yogr1o