Correlation Analysis
BERKSHIRE HATHAWAY Class B vs GE Aerospace
BRK.B vs GE
+0.922
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
GE Aerospace
↗GE
GE Aerospace is the global leader in designing, manufacturing, and servicing commercial aircraft turbine engines, along with partner Safran in their CFM joint venture. With its massive global installed base of nearly 80,000 commercial and military engines, GE Aerospace earns most of its profits on recurring service revenue of that equipment, which operates for decades. GE Aerospace is the remaining core business of the company formed in 1892 with historical ties to American inventor Thomas Edison; that company became a storied conglomerate with peak revenue of $130 billion in 2000 until GE spun off its appliance, finance, healthcare, and wind and power businesses between 2016 and 2024.
Market cap 301.6B
Time Series
Relative Performance
Who Moves First
BRK.B leads GE by 6 days
BRK.B tends to move before GE.
After testing 13 timing shifts, the strongest relationship was +0.924 (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
+0.102
17 periods · Return correlation when both series rose
Both Falling
-0.109
6 periods · Return correlation when both series fell
Diverging
-0.644
12 periods · Return correlation when series moved apart
R-Squared
85.1%
Share of variance in one series explained by the other.
Trend Agreement
64.7%
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: [0.914, 0.930]
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
GE Aerospace
GE
Market cap 301.6B
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
52
Estimated crossover points between normalized spreads.
Slope
0.9568
Linear regression slope.
Intercept
-229.5834
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-ge-daily