Correlation Analysis
Costco Wholesale Corp vs UL Solutions Inc.
COST vs ULS
+0.533
Moderate positive
When one moves up, the other tends to follow.
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
UL Solutions Inc.
↗ULS
UL Solutions is a global leader specializing in a broad range of product testing, inspection, and certification services. UL Solutions is the for-profit branch out of three organizations under the UL Enterprise. TIC operations make up nearly all of UL Solutions' total revenue and are composed of two segments: industrial and consumer. UL Solutions' remaining business includes software and advisory, which complements its core TIC offerings. The firm operates globally.
Market cap 16.9B · 14,851 employees
Time Series
Relative Performance
Who Moves First
in sync
COST and ULS tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.533 (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
-0.017
17 periods · Return correlation when both series rose
Both Falling
+0.522
6 periods · Return correlation when both series fell
Diverging
-0.729
12 periods · Return correlation when series moved apart
R-Squared
28.4%
Share of variance in one series explained by the other.
Trend Agreement
54.0%
How often both series moved in the same direction period-to-period.
Overlap Quality
497
Robust shared window — 497 usable pairs.
Significance
p < 0.001
95% CI: [0.467, 0.593]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
497 paired data points survived the daily window.
Raw input
1,254
497
Normalized
1,254
497
Prepared
1,254
497
Aligned
497
497
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
757
A: 757 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
UL Solutions Inc.
ULS
Market cap 16.9B · 14,851 employees
Stock · 497 raw → 497 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
23
Estimated crossover points between normalized spreads.
Slope
0.1078
Linear regression slope.
Intercept
-38.7879
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-cost-vs-stock-uls-daily