Correlation Analysis
Costco Wholesale Corp vs Dollar Tree Inc.
COST vs DLTR
-0.585
Moderate 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
Dollar Tree Inc.
↗DLTR
Founded in 1986, Dollar Tree operates almost 9,000 small-box discount stores across the United States and Canada, offering roughly 85% of its merchandise under $2. The chain targets value-conscious suburban and urban shoppers with a mix of consumables (49% of sales), variety (45%), and seasonal goods (6%). In fiscal 2024, Dollar Tree generated over $17 billion in sales, through its multi-price strategy, higher-margin discretionary assortments, and private-label products that account for nearly one-third of sales.
Market cap 21.9B · 153,032 employees
Time Series
Relative Performance
Who Moves First
DLTR leads COST by 6 days
DLTR tends to move before COST.
After testing 13 timing shifts, the strongest relationship was -0.592 (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
-0.110
13 periods · Return correlation when both series rose
Both Falling
-0.108
6 periods · Return correlation when both series fell
Diverging
-0.689
16 periods · Return correlation when series moved apart
R-Squared
34.3%
Share of variance in one series explained by the other.
Trend Agreement
61.8%
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: [-0.621, -0.548]
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
Dollar Tree Inc.
DLTR
Market cap 21.9B · 153,032 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
-0.0775
Linear regression slope.
Intercept
172.0508
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 5 hours ago · ID: stock-cost-vs-stock-dltr-daily