SeriesMagCorrOverlapThrough
These move together about 71% of the time
Strong positive
Strong enough to use as a signal — read the stability and regime notes below before relying on it.
Apple is among the largest companies in the world, with a broad portfolio of hardware and software products targeted at consumers and businesses. Apple's iPhone makes up a majority of the firm sales, and Apple's other products like Mac, iPad, and Watch are designed around the iPhone as the focal point of an expansive software ecosystem. Apple has progressively worked to add new applications, like streaming video, subscription bundles, and augmented reality. The firm designs its own software and semiconductors while working with subcontractors like Foxconn and TSMC to build its products and chips. Slightly less than half of Apple's sales come directly through its flagship stores, with a major
Market cap 3.9T · 166,000 employees
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).
What to Watch
Unusual right now
Recent correlation (+8%) is 2.6σ from the long-run average of +84% — pair is behaving differently than usual.
Holds across regimes
Correlation is similar when markets rise (+42%) and fall (+48%) — reliable in both directions.
Regime-dependent
The correlation has flipped sign across time windows — not reliable as a standalone signal.
Time Series
Time-Shifted Correlation
See how correlation changes when one series is offset in time. A taller bar at a non-zero shift means the two move together better when one leads the other — that's a potential lead/lag signal.
Correlation by shift
Click a bar to inspect. Range: -6 to 6 days.
Selected shift
No shift
Correlation at this shift
+84%
No shift — both series at their actual dates.
1,255 overlapping points at this shift
Time series with Microsoft Corp at original dates
Indexed to 100 at start
Deep Dive
Stability
How the correlation evolves over time. A stable line means the relationship is reliable; large swings signal regime-dependent behavior.
Corr
+84%
Pearson correlation
95% CI
+83% → +86%
Likely range
R²
71.4%
Variance explained
Trend agreement
70.6%
Same-direction moves
Significance
p < 0.001
Statistical confidence
Data points
1,255
Deep
Pipeline
Pipeline Summary
1,255 paired data points survived the daily window.
Raw input
1,255
1,255
Normalized
1,255
1,255
Prepared
1,255
1,255
Aligned
1,255
1,255
Invalid removed
Explore
The strongest positive and inverse pairs we’ve saved for each side of this comparison — good jumping-off points if this result raised a question.
Market cap 3.2T · 228,000 employees
Do They Crash Together?
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
+42%
116 periods · Return correlation when both series rose
Both Falling
+48%
94 periods · Return correlation when both series fell
Diverging
-38%
39 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
Apple Inc.
AAPL
Market cap 3.9T · 166,000 employees
Stock · 1,255 raw → 1,255 prepared
Series B
Microsoft Corp
MSFT
Market cap 3.2T · 228,000 employees
Stock · 1,255 raw → 1,255 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
14
Estimated crossover points between normalized spreads.
Slope
1.7118
Linear regression slope.
Intercept
34.6464
Linear regression intercept.
Saved 2 days ago · ID: stock:aapl|stock:msft|5Y