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Correlation Analysis

Microsoft Corp vs Delta Air Lines, Inc.

MSFT vs DAL

+0.726

Strong positive

When one moves up, the other tends to follow.

MSFT logo

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

DAL logo

Delta Air Lines, Inc.

DAL

Atlanta-based Delta Air Lines is one of the world's largest airlines, with a network of over 300 destinations in more than 50 countries. Delta operates a hub-and-spoke network, where it gathers and distributes passengers across the globe through its biggest hubs in Atlanta, New York, Salt Lake City, Detroit, Seattle, and Minneapolis-St. Paul. Delta has historically earned most of its international revenue and profits from flying passengers over the Atlantic Ocean.

Market cap 43.6B · 103,000 employees

Apr 9, 2021 — Apr 7, 2026Daily1,254 data pointsStockStockTechnology

Time Series

Relative Performance

Green: MSFTGray: DAL36 of 1,254 points (sampled)

Who Moves First

MSFT leads DAL by 6 days

MSFT tends to move before DAL.

After testing 13 timing shifts, the strongest relationship was +0.747 (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

+0.240

11 periods · Return correlation when both series rose

Both Falling

+0.058

8 periods · Return correlation when both series fell

Diverging

-0.756

16 periods · Return correlation when series moved apart

R-Squared

52.7%

Share of variance in one series explained by the other.

Trend Agreement

59.3%

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: [0.699, 0.751]

Scatter

XY Regression

208.6250300350400450500549.328304050607074.2Microsoft CorpDelta Air Lines, Inc.Data pointsFit (r = 0.726)

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

MSFT logo

Microsoft Corp

MSFT

Market cap 2.8T

Stock · 1,254 raw → 1,254 prepared

Series B

DAL logo

Delta Air Lines, Inc.

DAL

Market cap 43.6B · 103,000 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

2

Estimated crossover points between normalized spreads.

Slope

0.0934

Linear regression slope.

Intercept

12.0072

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 7 hours ago · ID: stock-msft-vs-stock-dal-daily-20260408-9rtcz5