Correlation Analysis
Costco Wholesale Corp vs SoFi Technologies, Inc. Common Stock
COST vs SOFI
+0.453
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
SoFi Technologies, Inc. Common Stock
↗SOFI
SoFi is a financial-services company that was founded in 2011 and is based in San Francisco. Initially known for its student loan refinancing business, the company has expanded its product offerings to include personal loans, credit cards, mortgages, investment accounts, banking services, and financial planning. The company intends to be a one-stop shop for its clients' finances and operates solely through its mobile app and website. Through its acquisition of Galileo in 2020, the company also offers payment and account services for debit cards and digital banking.
Market cap 20.7B · 6,100 employees
Time Series
Relative Performance
Who Moves First
COST leads SOFI by 6 days
COST tends to move before SOFI.
After testing 13 timing shifts, the strongest relationship was +0.468 (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
-0.357
9 periods · Return correlation when both series rose
Both Falling
+0.210
8 periods · Return correlation when both series fell
Diverging
-0.669
18 periods · Return correlation when series moved apart
R-Squared
20.5%
Share of variance in one series explained by the other.
Trend Agreement
57.6%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,218
Deep shared window — 1,218 usable pairs.
Significance
p < 0.001
95% CI: [0.407, 0.496]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,218 paired data points survived the daily window.
Raw input
1,254
1,218
Normalized
1,254
1,218
Prepared
1,254
1,218
Aligned
1,218
1,218
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
36
A: 36 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
SoFi Technologies, Inc. Common Stock
SOFI
Market cap 20.7B · 6,100 employees
Stock · 1,218 raw → 1,218 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.0147
Linear regression slope.
Intercept
2.0873
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
SOFI
SoFi Technologies, Inc. Common Stock
Highest
+0.778
Tesla, Inc. Common Stock
TSLA · 1,218 data points
Lowest
-0.006
Exxon Mobil Corporation
XOM · 1,218 data points
Saved 9 hours ago · ID: stock-cost-vs-stock-sofi-daily