Correlation Analysis
Apple Inc. vs MKS Inc. Common Stock
AAPL vs MKSI
+0.200
Light positive
When one moves up, the other tends to follow.
Apple Inc.
↗AAPL
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 majority of sales coming indirectly through partnerships and distribution.
Market cap 3.8T
MKS Inc. Common Stock
↗MKSI
MKS Inc delivers foundational technology solutions for leading edge semiconductor manufacturing, electronics and packaging, and specialty industrial applications. The company provides instruments, components, subsystems, systems, process control solutions, and specialty chemicals technology that improve process performance and optimize productivity. Its solutions address challenges of miniaturization and complexity in device manufacturing, enabling increased power, speed, and feature enhancement. MKS Inc operates through three divisions: Vacuum Solutions Division (VSD), Photonics Solutions Division (PSD), and Materials Solutions Division (MSD). The company operates in the United States, which generates maximum revenue, as well as China and other countries.
Market cap 16B · 10,300 employees
Time Series
Rebased to 100
Who Moves First
AAPL leads MKSI by 6 days
AAPL tends to move before MKSI.
Best correlation after shifting: +0.205 (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
+0.275
11 periods · Return correlation when both series rose
Both Falling
+0.534
9 periods · Return correlation when both series fell
Diverging
-0.478
15 periods · Return correlation when series moved apart
R-Squared
4.0%
Share of variance in one series explained by the other.
Trend Agreement
64.4%
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: [0.147, 0.253]
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
Apple Inc.
AAPL
Market cap 3.8T
Stock · 1,254 raw → 1,254 prepared
Series B
MKS Inc. Common Stock
MKSI
Market cap 16B · 10,300 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
22
Estimated crossover points between normalized spreads.
Slope
0.1883
Linear regression slope.
Intercept
86.8244
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 3 hours ago · ID: stock-aapl-vs-stock-mksi-daily-20260408-oc7hqk