Correlation Analysis
Cencora, Inc. vs Costco Wholesale Corp
COR vs COST
+0.869
Very strong positive
When one moves up, the other tends to follow.
Cencora, Inc.
↗COR
Cencora is one of three leading domestic pharmaceutical wholesalers. It sources and distributes branded, generic, and specialty pharmaceutical products to pharmacies (retail chains, independent, and mail order), hospital networks, and healthcare providers. It and McKesson and Cardinal Health hold over 90% share of the US pharmaceutical wholesale industry. Cencora also provides commercialization services for manufacturers of pharmaceuticals and medical devices, global specialty drug logistics (World Courier), and animal health product distribution (MWI Animal Health). Cencora expanded its international presence in 2021 by purchasing Alliance Healthcare, one of the leading drug wholesalers in Europe.
Market cap 62.4B · 51,000 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
COR and COST tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.869 (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
+0.129
19 periods · Return correlation when both series rose
Both Falling
+0.842
5 periods · Return correlation when both series fell
Diverging
-0.494
11 periods · Return correlation when series moved apart
R-Squared
75.6%
Share of variance in one series explained by the other.
Trend Agreement
56.7%
How often both series moved in the same direction period-to-period.
Overlap Quality
834
Deep shared window — 834 usable pairs.
Significance
p < 0.001
95% CI: [0.852, 0.885]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
834 paired data points survived the daily window.
Raw input
834
1,254
Normalized
834
1,254
Prepared
834
1,254
Aligned
834
834
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
420
A: 0 / B: 420
Series A
Cencora, Inc.
COR
Market cap 62.4B · 51,000 employees
Stock · 834 raw → 834 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
9
Estimated crossover points between normalized spreads.
Slope
2.7526
Linear regression slope.
Intercept
118.7839
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 5 hours ago · ID: stock-cor-vs-stock-cost-daily