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Correlation Analysis

Apple Inc. vs Idexx Laboratories Inc

AAPL vs IDXX

+0.310

Light 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

IDXX logo

Idexx Laboratories Inc

IDXX

Idexx Laboratories primarily develops, manufactures, and distributes diagnostic products, equipment, and services for pets and livestock. Its key product lines include single-use canine and feline test kits that veterinarians can employ in the office, benchtop chemistry and hematology analyzers for test-panel analysis on-site, reference lab services, and tests to detect and manage disease in livestock. The firm also offers vet practice management software and consulting services to animal hospitals. Idexx derives roughly 35% of its revenue from outside the United States.

Market cap 45.9B · 11,000 employees

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

Time Series

Rebased to 100

Green: AAPLGray: IDXX36 of 1,254 points (sampled)

Who Moves First

IDXX leads AAPL by 6 days

IDXX tends to move before AAPL.

Best correlation after shifting: +0.314 (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

+0.622

9 periods · Return correlation when both series rose

Both Falling

+0.299

10 periods · Return correlation when both series fell

Diverging

-0.764

16 periods · Return correlation when series moved apart

R-Squared

9.6%

Share of variance in one series explained by the other.

Trend Agreement

64.9%

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: [0.259, 0.359]

Scatter

XY Regression

112.3120140160180200220240260280285.6332400500600700728Apple Inc.Idexx Laboratories IncData pointsFit (r = 0.31)

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

IDXX logo

Idexx Laboratories Inc

IDXX

Market cap 45.9B · 11,000 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

51

Estimated crossover points between normalized spreads.

Slope

0.7355

Linear regression slope.

Intercept

376.1176

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-aapl-vs-stock-idxx-daily-20260408-qpkusg