Correlation Analysis
Costco Wholesale Corp vs Workday, Inc. Class A Common Stock
COST vs WDAY
+0.192
Weak 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
Workday, Inc. Class A Common Stock
↗WDAY
Workday is a software company that offers human capital management, financial management, and business planning solutions for enterprises. Known for being a cloud-only software provider, Workday was founded in 2005 and is headquartered in Pleasanton, California.
Market cap 33.3B · 21,000 employees
Time Series
Relative Performance
Who Moves First
WDAY leads COST by 6 days
WDAY tends to move before COST.
After testing 13 timing shifts, the strongest relationship was +0.216 (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
+0.510
14 periods · Return correlation when both series rose
Both Falling
+0.382
9 periods · Return correlation when both series fell
Diverging
-0.708
12 periods · Return correlation when series moved apart
R-Squared
3.7%
Share of variance in one series explained by the other.
Trend Agreement
61.5%
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: [0.138, 0.245]
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
Workday, Inc. Class A Common Stock
WDAY
Market cap 33.3B · 21,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
11
Estimated crossover points between normalized spreads.
Slope
0.0371
Linear regression slope.
Intercept
198.4612
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
WDAY
Workday, Inc. Class A Common Stock
Highest
+0.447
Amazon.Com Inc
AMZN · 1,254 data points
Lowest
-0.474
Johnson & Johnson
JNJ · 1,254 data points
Saved 6 hours ago · ID: stock-cost-vs-stock-wday-daily