Correlation Analysis
Costco Wholesale Corp vs Fiserv, Inc. Common Stock
COST vs FISV
-0.912
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
Fiserv, Inc. Common Stock
↗FISV
Fiserv is a leading provider of core processing and complementary services, such as electronic funds transfer, payment processing, and loan processing, for US banks and credit unions, with a focus on small and midsize banks. Following its 2019 merger with First Data, Fiserv also provides payment processing services to merchants. About 10% of the company's revenue is generated internationally.
Market cap 30B · 38,000 employees
Time Series
Relative Performance
Who Moves First
in sync
COST and FISV tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was -0.912 (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
+0.203
9 periods · Return correlation when both series rose
Both Falling
+0.794
8 periods · Return correlation when both series fell
Diverging
-0.942
18 periods · Return correlation when series moved apart
R-Squared
83.2%
Share of variance in one series explained by the other.
Trend Agreement
62.5%
How often both series moved in the same direction period-to-period.
Overlap Quality
644
Robust shared window — 644 usable pairs.
Significance
p < 0.001
95% CI: [-0.924, -0.898]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
644 paired data points survived the daily window.
Raw input
1,254
644
Normalized
1,254
644
Prepared
1,254
644
Aligned
644
644
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
610
A: 610 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
Fiserv, Inc. Common Stock
FISV
Market cap 30B · 38,000 employees
Stock · 644 raw → 644 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
15
Estimated crossover points between normalized spreads.
Slope
-0.0908
Linear regression slope.
Intercept
149.7953
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-cost-vs-stock-fisv-daily