Correlation Analysis
Applied Materials Inc vs Costco Wholesale Corp
AMAT vs COST
+0.704
Strong positive
When one moves up, the other tends to follow.
Applied Materials Inc
↗AMAT
Applied Materials is the largest semiconductor wafer fabrication equipment manufacturer in the world. It has a broad portfolio spanning nearly every corner of the WFE ecosystem. Applied Materials holds leading market share in deposition, which entails the layering of new materials on semiconductor wafers. It is more exposed to general-purpose logic chips made at integrated device manufacturers and foundries. It counts the largest chipmakers in the world as customers, including TSMC, Intel, and Samsung.
Market cap 279.8B · 36,500 employees
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
Time Series
Relative Performance
Who Moves First
AMAT leads COST by 6 days
AMAT tends to move before COST.
After testing 13 timing shifts, the strongest relationship was +0.706 (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
+0.629
12 periods · Return correlation when both series rose
Both Falling
+0.592
5 periods · Return correlation when both series fell
Diverging
-0.732
18 periods · Return correlation when series moved apart
R-Squared
49.6%
Share of variance in one series explained by the other.
Trend Agreement
61.2%
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: [0.675, 0.731]
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
Applied Materials Inc
AMAT
Market cap 279.8B · 36,500 employees
Stock · 1,254 raw → 1,254 prepared
Series B
Costco Wholesale Corp
COST
Market cap 451.9B
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
2.6256
Linear regression slope.
Intercept
253.6682
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-amat-vs-stock-cost-daily