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Correlation Analysis

Apple Inc. vs Martin Marietta Materials

AAPL vs MLM

+0.867

Very strong positive

When one moves up, the other tends to follow.

AAPL logo

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

MLM logo

Martin Marietta Materials

MLM

Martin Marietta Materials is one of the United States' largest producer of construction aggregates (crushed stone, sand, and gravel). In 2024, Martin Marietta sold 191 million tons of aggregates. Martin Marietta's most important markets include Texas, North Carolina, Colorado, California, and Georgia, accounting for most of its sales. The company also uses its aggregates in its asphalt and ready-mixed concrete businesses. Martin's magnesia specialties business produces magnesia-based chemical products and dolomitic lime.

Market cap 36.1B · 9,600 employees

Apr 9, 2021 — Apr 7, 2026Daily1,254 observationsStockStockTechnology

Who Moves First

MLM leads AAPL by 6 days

MLM tends to move before AAPL.

Best correlation after shifting: +0.869 (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

+0.510

13 periods · Return correlation when both series rose

Both Falling

+0.183

8 periods · Return correlation when both series fell

Diverging

-0.598

14 periods · Return correlation when series moved apart

R-Squared

75.2%

Share of variance in one series explained by the other.

Trend Agreement

60.3%

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: [0.853, 0.881]

Time Series

Rebased to 100

Green: AAPLGray: MLM36 of 1,254 points (sampled)

Scatter

XY Regression

112.3120140160180200220240260280285.6299300400500600687Apple Inc.Martin Marietta MaterialsData pointsFit (r = 0.867)

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

AAPL logo

Apple Inc.

AAPL

Market cap 3.8T

Stock · 1,254 raw → 1,254 prepared

Series B

MLM logo

Martin Marietta Materials

MLM

Market cap 36.1B · 9,600 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

11

Estimated crossover points between normalized spreads.

Slope

2.2520

Linear regression slope.

Intercept

41.5024

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-aapl-vs-stock-mlm-daily-20260408-og2g2s