Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Constellation Energy Corporation Common Stock
BRK.B vs CEG
+0.913
Very 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
Constellation Energy Corporation Common Stock
↗CEG
Constellation Energy Corp producer of carbon-free energy and a supplier of energy products and services. The company offers generating capacity that includes nuclear, wind, solar, natural gas, and hydroelectric assets. It sells electricity, natural gas, and other energy-related products and sustainable solutions to various types of customers, including distribution utilities, municipalities, cooperatives, and commercial, industrial, public sector, and residential customers in markets across multiple geographic regions. Its operating segments and reporting units are Mid-Atlantic, Midwest, New York, ERCOT, and Other Power Regions.
Market cap 99.7B · 15,339 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads CEG by 6 days
BRK.B tends to move before CEG.
After testing 13 timing shifts, the strongest relationship was +0.916 (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
-0.159
14 periods · Return correlation when both series rose
Both Falling
-0.358
7 periods · Return correlation when both series fell
Diverging
-0.720
14 periods · Return correlation when series moved apart
R-Squared
83.4%
Share of variance in one series explained by the other.
Trend Agreement
58.7%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,047
Deep shared window — 1,047 usable pairs.
Significance
p < 0.001
95% CI: [0.902, 0.923]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,047 paired data points survived the daily window.
Raw input
1,254
1,047
Normalized
1,254
1,047
Prepared
1,254
1,047
Aligned
1,047
1,047
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
207
A: 207 / B: 0
Series A
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
Constellation Energy Corporation Common Stock
CEG
Market cap 99.7B · 15,339 employees
Stock · 1,047 raw → 1,047 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
41
Estimated crossover points between normalized spreads.
Slope
1.1665
Linear regression slope.
Intercept
-286.1229
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
BRK.B
BERKSHIRE HATHAWAY Class B
Highest
+0.968
Republic Services Inc.
RSG · 1,254 data points
Lowest
-0.918
United Parcel Service, Inc. Class B
UPS · 1,254 data points
CEG
Constellation Energy Corporation Common Stock
Highest
+0.968
JPMorgan Chase & Co.
JPM · 1,047 data points
Lowest
+0.306
Johnson & Johnson
JNJ · 1,047 data points
Saved 7 hours ago · ID: stock-brk-b-vs-stock-ceg-daily