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Correlation Analysis

Costco Wholesale Corp vs Cintas Corp

COST vs CTAS

+0.971

Very strong positive

When one moves up, the other tends to follow.

COST logo

Costco Wholesale Corp

COST

Founded in 1983, Costco Wholesale now operates a global chain of membership-based warehouse clubs, delivering high-quality goods and services at consistently low prices. As of its most recent fiscal year, Costco operated approximately 910 warehouses, serving more than 80 million members across its three geographic segments: Costco US (approximately 73% of total revenue), Costco Canada (13%), and Costco International (14%).Costco's core value proposition—quality products at unbeatable prices—has yielded consistently strong member renewal rates (93% in the US and Canada and nearly 90% internationally). About 55% of Costco's fiscal 2025 revenue came from its grocery offerings, and another 25% from general merchandise.

Market cap 451.9B

CTAS logo

Cintas Corp

CTAS

Cintas has roots dating back to 1929, when the Farmer family cleaned and resold dirty rags to manufacturing plants in Ohio. The firm has expanded its business organically and through acquisitions, and today Cintas acts as a one-stop outsourcing partner for businesses. Cintas will design, manufacture, collect, and clean every employee uniform for a small weekly sum, taking on the upfront capital expense itself. At the same stop, Cintas can also replace soiled or depleted mats, mops, trash liners, towels, first aid supplies, fire extinguishers, and cleaning products. Businesses value an outsourcing partner like Cintas as it simplifies operations and leaves noncore tasks with high regulatory standards in the hands of professionals.

Market cap 68.7B · 48,300 employees

Apr 9, 2021 — Apr 7, 2026Daily1,254 data pointsStockStockConsumer

Time Series

Relative Performance

Green: COSTGray: CTAS36 of 1,254 points (sampled)

Who Moves First

CTAS leads COST by 6 days

CTAS tends to move before COST.

After testing 13 timing shifts, the strongest relationship was +0.972 (they moved in the same direction).

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

+0.440

16 periods · Return correlation when both series rose

Both Falling

+0.311

6 periods · Return correlation when both series fell

Diverging

-0.396

13 periods · Return correlation when series moved apart

R-Squared

94.4%

Share of variance in one series explained by the other.

Trend Agreement

69.1%

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: [0.968, 0.974]

Scatter

XY Regression

3064006008001,0001,13477.280100120140160180200220236Costco Wholesale CorpCintas CorpData pointsFit (r = 0.971)

Pipeline

Data quality details

Pipeline Summary

1,254 paired data points 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

COST logo

Costco Wholesale Corp

COST

Market cap 451.9B

Stock · 1,254 raw → 1,254 prepared

Series B

CTAS logo

Cintas Corp

CTAS

Market cap 68.7B · 48,300 employees

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

5

Estimated crossover points between normalized spreads.

Slope

0.2075

Linear regression slope.

Intercept

4.7585

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 7 hours ago · ID: stock-cost-vs-stock-ctas-daily