Correlation Analysis
CDW Corporation vs Costco Wholesale Corp
CDW vs COST
-0.127
Weak inverse
When one moves up, the other tends to move down.
CDW Corporation
↗CDW
CDW Corp is a multi-brand provider of information technology (IT) solutions to businesses, government, education, and healthcare customers in the United States, the United Kingdom, and Canada. The company's offerings range from hardware and software products to integrated IT solutions and services, including on-premise and cloud capabilities across hybrid infrastructure, digital experience, and security. Its reportable segments are Corporate, Small Business, Public, and Other. The Corporate and Small Business segments serve US private sector business customers, while the Public segment consists of government agencies and education and healthcare institutions in the US. The Corporate segment generates the majority of its revenue in the United States.
Market cap 15.9B · 14,800 employees
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
Time Series
Relative Performance
Who Moves First
COST leads CDW by 6 days
COST tends to move before CDW.
After testing 13 timing shifts, the strongest relationship was -0.139 (they moved in opposite directions).
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
+0.213
14 periods · Return correlation when both series rose
Both Falling
+0.473
9 periods · Return correlation when both series fell
Diverging
-0.652
12 periods · Return correlation when series moved apart
R-Squared
1.6%
Share of variance in one series explained by the other.
Trend Agreement
63.9%
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: [-0.181, -0.072]
Scatter
XY Regression
Pipeline
Data quality details
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
CDW Corporation
CDW
Market cap 15.9B · 14,800 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
-0.9619
Linear regression slope.
Intercept
860.6790
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 5 hours ago · ID: stock-cdw-vs-stock-cost-daily