Correlation Analysis
Costco Wholesale Corp vs Expand Energy Corporation Common Stock
COST vs EXE
+0.209
Light 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
Expand Energy Corporation Common Stock
↗EXE
Expand Energy is a North American natural gas producer in the Haynesville and Appalachian basins, formed by the combination of Chesapeake and Southwestern. Its largest operation by volume is the Haynesville basin in Louisiana, which is heavily exposed to nearby LNG production. Appalachia benefits from its proximity to population centers in the Northeast and mid-Atlantic regions.
Market cap 24.9B · 1,600 employees
Time Series
Relative Performance
Who Moves First
in sync
COST and EXE tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.209 (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
-0.168
9 periods · Return correlation when both series rose
Both Falling
+0.004
8 periods · Return correlation when both series fell
Diverging
-0.759
18 periods · Return correlation when series moved apart
R-Squared
4.4%
Share of variance in one series explained by the other.
Trend Agreement
50.4%
How often both series moved in the same direction period-to-period.
Overlap Quality
378
Robust shared window — 378 usable pairs.
Significance
p < 0.001
95% CI: [0.111, 0.304]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
378 paired data points survived the daily window.
Raw input
1,254
378
Normalized
1,254
378
Prepared
1,254
378
Aligned
378
378
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
876
A: 876 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
Expand Energy Corporation Common Stock
EXE
Market cap 24.9B · 1,600 employees
Stock · 378 raw → 378 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
19
Estimated crossover points between normalized spreads.
Slope
0.0368
Linear regression slope.
Intercept
69.1350
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
EXE
Expand Energy Corporation Common Stock
Highest
+0.532
VISA Inc.
V · 378 data points
Lowest
+0.058
Exxon Mobil Corporation
XOM · 378 data points
Saved 7 hours ago · ID: stock-cost-vs-stock-exe-daily