Correlation Analysis
Microsoft Corp vs Zscaler, Inc. Common Stock
MSFT vs ZS
+0.488
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
Zscaler, Inc. Common Stock
↗ZS
Zscaler is a software-as-a-service, or SaaS, firm focusing on providing cloud-native cybersecurity solutions to primarily enterprise customers. Zscaler's offerings can be broadly partitioned into Zscaler Internet Access, which provides secure access to external applications, and Zscaler Private Access, which provides secure access to internal applications. The firm is headquartered in San Jose, California, and went public in 2018.
Market cap 22.4B · 7,923 employees
Time Series
Rebased to 100
Who Moves First
in sync
MSFT and ZS tend to move at the same time.
Best correlation after shifting: +0.488 (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
+0.734
15 periods · Return correlation when both series rose
Both Falling
+0.568
10 periods · Return correlation when both series fell
Diverging
-0.885
10 periods · Return correlation when series moved apart
R-Squared
23.8%
Share of variance in one series explained by the other.
Trend Agreement
69.2%
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: [0.444, 0.529]
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
Zscaler, Inc. Common Stock
ZS
Market cap 22.4B · 7,923 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
13
Estimated crossover points between normalized spreads.
Slope
0.3387
Linear regression slope.
Intercept
80.1780
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 3 hours ago · ID: stock-msft-vs-stock-zs-daily-20260408-nrima9