Correlation Analysis
BERKSHIRE HATHAWAY Class B vs EQT CORP
BRK.B vs EQT
+0.749
Strong positive
When one moves up, the other tends to follow.
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
EQT CORP
↗EQT
EQT is an independent natural gas production company. It focuses its operations in the cores of the Marcellus and Utica shales, located in the Appalachian Basin in the Eastern United States. Its main customers include marketers, utilities, and industrial operators in the Appalachian Basin. The company has three reportable segments in production, gathering, and its transmission segment, which is now an operated joint venture with Blackstone. All the firm's operating revenue is generated in the US, with most revenue flowing from the Marcellus Shale field and through the sale of natural gas.
Market cap 37.7B · 1,523 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads EQT by 6 days
BRK.B tends to move before EQT.
After testing 13 timing shifts, the strongest relationship was +0.753 (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
+0.502
13 periods · Return correlation when both series rose
Both Falling
+0.401
5 periods · Return correlation when both series fell
Diverging
-0.783
17 periods · Return correlation when series moved apart
R-Squared
56.0%
Share of variance in one series explained by the other.
Trend Agreement
60.0%
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: [0.723, 0.772]
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
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
EQT CORP
EQT
Market cap 37.7B · 1,523 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.1059
Linear regression slope.
Intercept
-0.9711
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-eqt-daily