Correlation Analysis
Astera Labs, Inc. Common Stock vs BERKSHIRE HATHAWAY Class B
ALAB vs BRK.B
+0.422
Moderate 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
BERKSHIRE HATHAWAY Class B
↗BRK.B
Berkshire Hathaway is a holding company with a wide array of subsidiaries engaged in diverse activities. The firm's core business segment is insurance, run primarily through Geico, Berkshire Hathaway Reinsurance Group, and Berkshire Hathaway Primary Group. Berkshire has used the excess cash thrown off from its operations to acquire Burlington Northern Santa Fe (railroad), Berkshire Hathaway Energy (utilities and energy distributors), and the companies that make up its manufacturing, service, and retailing operations (which include Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis. Berkshire is expected to generate close to $375 billion in revenue in 2025.
Market cap 1T
Time Series
Relative Performance
Who Moves First
BRK.B leads ALAB by 6 days
BRK.B tends to move before ALAB.
After testing 13 timing shifts, the strongest relationship was +0.431 (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
+0.339
5 periods · Return correlation when both series rose
Both Falling
+0.162
9 periods · Return correlation when both series fell
Diverging
-0.612
21 periods · Return correlation when series moved apart
R-Squared
17.8%
Share of variance in one series explained by the other.
Trend Agreement
47.5%
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: [0.348, 0.490]
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
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
24
Estimated crossover points between normalized spreads.
Slope
0.2944
Linear regression slope.
Intercept
440.0305
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
ALAB
Astera Labs, Inc. Common Stock
Highest
+0.825
JPMorgan Chase & Co.
JPM · 513 data points
Lowest
+0.095
Eli Lilly & Co.
LLY · 513 data points
Saved 7 hours ago · ID: stock-alab-vs-stock-brk-b-daily