Correlation Analysis
BERKSHIRE HATHAWAY Class B vs WEC Energy Group, Inc.
BRK.B vs WEC
+0.457
Moderate 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
WEC Energy Group, Inc.
↗WEC
WEC Energy Group's electric and gas utility businesses serve electric and gas customers in Illinois, Michigan, Minnesota, and Wisconsin service territories. The company also owns a 60% stake in American Transmission Co. WEC's asset mix is approximately 49% electric generation and distribution, 30% gas distribution, 10% electric transmission, 9% unregulated renewable energy, and 2% LNG distribution and generation.
Market cap 38B · 7,151 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads WEC by 6 days
BRK.B tends to move before WEC.
After testing 13 timing shifts, the strongest relationship was +0.465 (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
+0.183
14 periods · Return correlation when both series rose
Both Falling
+0.618
5 periods · Return correlation when both series fell
Diverging
-0.578
16 periods · Return correlation when series moved apart
R-Squared
20.9%
Share of variance in one series explained by the other.
Trend Agreement
63.4%
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: [0.413, 0.500]
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
WEC Energy Group, Inc.
WEC
Market cap 38B · 7,151 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.0538
Linear regression slope.
Intercept
75.2143
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-wec-daily