Correlation Analysis
Costco Wholesale Corp vs Block, Inc.
COST vs XYZ
-0.057
Weak 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
Block, Inc.
↗XYZ
Founded in 2009, Block provides payment services to merchants, along with related services. The company also launched Cash App, a person-to-person payment network. In 2024, Square's payment volume was almost USD 250 million.
Market cap 36.4B · 10,205 employees
Time Series
Relative Performance
Who Moves First
COST leads XYZ by 6 days
COST tends to move before XYZ.
After testing 13 timing shifts, the strongest relationship was -0.119 (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
-0.548
8 periods · Return correlation when both series rose
Both Falling
+0.209
12 periods · Return correlation when both series fell
Diverging
-0.759
15 periods · Return correlation when series moved apart
R-Squared
0.3%
Share of variance in one series explained by the other.
Trend Agreement
49.5%
How often both series moved in the same direction period-to-period.
Overlap Quality
304
Robust shared window — 304 usable pairs.
Significance
n.s.
95% CI: [-0.168, 0.056]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
304 paired data points survived the daily window.
Raw input
1,254
304
Normalized
1,254
304
Prepared
1,254
304
Aligned
304
304
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
950
A: 950 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
Block, Inc.
XYZ
Market cap 36.4B · 10,205 employees
Stock · 304 raw → 304 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
15
Estimated crossover points between normalized spreads.
Slope
-0.0119
Linear regression slope.
Intercept
78.1675
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-cost-vs-stock-xyz-daily