Correlation Analysis
Costco Wholesale Corp vs United Parcel Service, Inc. Class B
COST vs UPS
-0.903
Very strong inverse
When one moves up, the other tends to move down.
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
United Parcel Service, Inc. Class B
↗UPS
As the world's largest parcel delivery company, UPS manages a massive fleet of more than 500 planes and 100,000 vehicles, along with many hundreds of sorting facilities, to deliver an average of about 22 million packages per day to residences and businesses across the globe. UPS' domestic US package operations generate around 65% of total revenue, while international package makes up 20%. Air and ocean freight forwarding and contract logistics make up the remainder.
Market cap 82.6B · 460,000 employees
Time Series
Relative Performance
Who Moves First
COST leads UPS by 6 days
COST tends to move before UPS.
After testing 13 timing shifts, the strongest relationship was -0.908 (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
-0.100
9 periods · Return correlation when both series rose
Both Falling
N/A
4 periods · Return correlation when both series fell
Diverging
-0.511
22 periods · Return correlation when series moved apart
R-Squared
81.5%
Share of variance in one series explained by the other.
Trend Agreement
58.8%
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: [-0.913, -0.892]
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
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
United Parcel Service, Inc. Class B
UPS
Market cap 82.6B · 460,000 employees
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
-0.1663
Linear regression slope.
Intercept
268.8165
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
COST
Costco Wholesale Corp
Highest
+0.977
Republic Services Inc.
RSG · 1,254 data points
Lowest
-0.912
Fiserv, Inc. Common Stock
FISV · 644 data points
UPS
United Parcel Service, Inc. Class B
Highest
-0.213
Johnson & Johnson
JNJ · 1,254 data points
Lowest
-0.939
Meta Platforms, Inc. Class A Common Stock
META · 1,107 data points
Saved 7 hours ago · ID: stock-cost-vs-stock-ups-daily