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Correlation Analysis

Apple Inc. vs Casey's General Stores Inc

AAPL vs CASY

+0.886

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

CASY logo

Casey's General Stores Inc

CASY

Casey's General Stores Inc serves as convenience store chain with its 2,900 locations, positioned in the Midwest United States. About half of Casey's stores are located in rural towns with populations under 5,000. While fueling stations serve as a key traffic driver, about two-thirds of the company's gross profit stems from in-store sales of grocery items, prepared meals, and general merchandise. Casey's owns more than 90% of its stores and operates the majority of its warehousing and distribution processes internally.

Market cap 27.6B · 49,272 employees

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

Who Moves First

CASY leads AAPL by 6 days

CASY tends to move before AAPL.

Best correlation after shifting: +0.888 (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

+0.045

12 periods · Return correlation when both series rose

Both Falling

+0.861

5 periods · Return correlation when both series fell

Diverging

-0.543

18 periods · Return correlation when series moved apart

R-Squared

78.5%

Share of variance in one series explained by the other.

Trend Agreement

57.2%

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: [0.873, 0.897]

Time Series

Rebased to 100

Green: AAPLGray: CASY36 of 1,254 points (sampled)

Scatter

XY Regression

112.3120140160180200220240260280285.6138200300400500600700787Apple Inc.Casey's General Stores IncData pointsFit (r = 0.886)

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

CASY logo

Casey's General Stores Inc

CASY

Market cap 27.6B · 49,272 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

17

Estimated crossover points between normalized spreads.

Slope

2.9857

Linear regression slope.

Intercept

-241.0253

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 3 hours ago · ID: stock-aapl-vs-stock-casy-daily-20260408-qbbimt