Correlation Analysis
Costco Wholesale Corp vs Qnity Electronics, Inc.
COST vs Q
+0.881
Very strong 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
Qnity Electronics, Inc.
↗Q
Qnity Electronics Inc is a specialty chemicals company created in 2025 after being spun off from DuPont. It sells chemicals and materials to the semiconductor industry, which generates the majority of sales, and also the electronics industry. The two segments are Semiconductor Technologies segment which provides a portfolio of materials and solutions utilized across multiple stages of the semiconductor manufacturing process. Interconnect Solutions segment offers a comprehensive range of material solutions that address the evolving complexities of signal integrity, thermal and power management and packaging. These solutions are integral for electronics hardware, including complex printed circuit boards and semiconductor packaging.
Market cap 24.9B
Time Series
Relative Performance
Who Moves First
COST leads Q by 1 day
COST tends to move before Q.
After testing 13 timing shifts, the strongest relationship was +0.882 (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
-0.164
12 periods · Return correlation when both series rose
Both Falling
-0.410
8 periods · Return correlation when both series fell
Diverging
-0.524
15 periods · Return correlation when series moved apart
R-Squared
77.5%
Share of variance in one series explained by the other.
Trend Agreement
53.3%
How often both series moved in the same direction period-to-period.
Overlap Quality
106
Usable shared window — 106 usable pairs.
Significance
p < 0.001
95% CI: [0.829, 0.917]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
106 paired data points survived the daily window.
Raw input
1,254
106
Normalized
1,254
106
Prepared
1,254
106
Aligned
106
106
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,148
A: 1148 / B: 0
Series A
Costco Wholesale Corp
COST
Market cap 451.9B
Stock · 1,254 raw → 1,254 prepared
Series B
Qnity Electronics, Inc.
Q
Market cap 24.9B
Stock · 106 raw → 106 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.2550
Linear regression slope.
Intercept
-142.9639
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-cost-vs-stock-q-daily