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Correlation Analysis

Apple Inc. vs Halliburton Company

AAPL vs HAL

-0.095

Weak inverse

When one moves up, the other tends to move down.

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

HAL logo

Halliburton Company

HAL

Halliburton is North America's largest oilfield-services company as measured by market share. Despite industry fragmentation, it holds a leading position in the hydraulic fracturing and completions market, which makes up nearly half of its revenue. It also holds strong positions in other service offerings like drilling and completions fluids, which leverages its expertise in material science, as well as the directional drilling market. While we consider SLB the global leader in reservoir evaluation, we think Halliburton leads in any activity from the reservoir to the wellbore. Halliburton's innovations have helped multiple producers lower their development costs per barrel of oil equivalent, with techniques that have been honed over a century of operations.

Market cap 31.6B · 46,000 employees

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

Who Moves First

HAL leads AAPL by 6 days

HAL tends to move before AAPL.

Best correlation after shifting: -0.119 (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

+0.350

8 periods · Return correlation when both series rose

Both Falling

N/A

4 periods · Return correlation when both series fell

Diverging

-0.633

23 periods · Return correlation when series moved apart

R-Squared

0.9%

Share of variance in one series explained by the other.

Trend Agreement

55.6%

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: [-0.150, -0.040]

Time Series

Rebased to 100

Green: AAPLGray: HAL36 of 1,254 points (sampled)

Scatter

XY Regression

112.3120140160180200220240260280285.617.79202530354043.06Apple Inc.Halliburton CompanyData pointsFit (r = -0.095)

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

HAL logo

Halliburton Company

HAL

Market cap 31.6B · 46,000 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

-0.0153

Linear regression slope.

Intercept

33.4085

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-aapl-vs-stock-hal-daily-20260408-npy6c0