Correlation Analysis
Cardinal Health, Inc. vs Costco Wholesale Corp
CAH vs COST
+0.842
Strong positive
When one moves up, the other tends to follow.
Cardinal Health, Inc.
↗CAH
Cardinal Health is one of three leading pharmaceutical wholesalers in the US, engaged in sourcing and distributing of branded, generic, and specialty pharmaceutical products to pharmacies (retail chains, independent, and mail order), hospital networks, and healthcare providers. Cardinal, Cencora, and McKesson hold well over 90% of the US pharmaceutical wholesale industry. Cardinal Health also supplies medical-surgical products and equipment to healthcare facilities in North America, Europe, and Asia.
Market cap 50B · 57,700 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
in sync
CAH and COST tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.842 (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
+0.343
14 periods · Return correlation when both series rose
Both Falling
N/A
2 periods · Return correlation when both series fell
Diverging
-0.433
19 periods · Return correlation when series moved apart
R-Squared
70.8%
Share of variance in one series explained by the other.
Trend Agreement
56.1%
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: [0.825, 0.857]
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
Cardinal Health, Inc.
CAH
Market cap 50B · 57,700 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
3.9075
Linear regression slope.
Intercept
285.0017
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-cah-vs-stock-cost-daily