Correlation Analysis
Agilent Technologies Inc. vs BERKSHIRE HATHAWAY Class B
A vs BRK.B
-0.308
Light inverse
When one moves up, the other tends to move down.
Agilent Technologies Inc.
↗A
Originally spun out of Hewlett-Packard in 1999, Agilent has evolved into a leading life science and diagnostic firm. Today, Agilent's measurement technologies serve a broad base of customers with its three operating segments: life science and diagnostics, cross lab operations consisting of consumables and services, and applied end markets. Over half of its sales are generated from the biopharmaceutical, chemical, and advanced materials end markets, which we view as the stickiest end markets, but it also supports clinical lab, environmental, forensics, food, academic, and government-related organizations. The company is geographically diverse, with operations in the US and China representing the largest country concentrations.
Market cap 32.5B · 18,100 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 A by 6 days
BRK.B tends to move before A.
After testing 13 timing shifts, the strongest relationship was -0.323 (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
+0.014
11 periods · Return correlation when both series rose
Both Falling
-0.361
6 periods · Return correlation when both series fell
Diverging
-0.528
18 periods · Return correlation when series moved apart
R-Squared
9.5%
Share of variance in one series explained by the other.
Trend Agreement
63.3%
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: [-0.357, -0.257]
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
Agilent Technologies Inc.
A
Market cap 32.5B · 18,100 employees
Stock · 1,254 raw → 1,254 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
5
Estimated crossover points between normalized spreads.
Slope
-1.7668
Linear regression slope.
Intercept
616.6905
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-a-vs-stock-brk-b-daily