Correlation Analysis
Astera Labs, Inc. Common Stock vs Costco Wholesale Corp
ALAB vs COST
+0.309
Light positive
When one moves up, the other tends to follow.
Astera Labs, Inc. Common Stock
↗ALAB
Astera Labs Inc designs and delivers semiconductor-based connectivity solutions for cloud and AI infrastructure. Its Intelligent Connectivity Platform integrates semiconductor technology, microcontrollers, sensors, and software to enhance performance, scalability, and data management. The company offers products such as integrated circuits (ICs), boards, and modules, catering to hyperscalers and system OEMs. The company's solutions focus on data, network, and memory management in AI-driven platforms. Geographically, the company operates in Singapore, China, Taiwan, and United States, of which maximum revenue is derived from United States.
Market cap 20.1B · 756 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
in sync
ALAB and COST tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.309 (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
-0.233
7 periods · Return correlation when both series rose
Both Falling
+0.241
9 periods · Return correlation when both series fell
Diverging
-0.674
19 periods · Return correlation when series moved apart
R-Squared
9.5%
Share of variance in one series explained by the other.
Trend Agreement
50.7%
How often both series moved in the same direction period-to-period.
Overlap Quality
513
Robust shared window — 513 usable pairs.
Significance
p < 0.001
95% CI: [0.229, 0.385]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
513 paired data points survived the daily window.
Raw input
513
1,254
Normalized
513
1,254
Prepared
513
1,254
Aligned
513
513
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
741
A: 0 / B: 741
Series A
Astera Labs, Inc. Common Stock
ALAB
Market cap 20.1B · 756 employees
Stock · 513 raw → 513 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
21
Estimated crossover points between normalized spreads.
Slope
0.4983
Linear regression slope.
Intercept
867.2808
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-alab-vs-stock-cost-daily