Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Ford Motor Company
BRK.B vs F
-0.485
Moderate inverse
When one moves up, the other tends to move down.
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
Ford Motor Company
↗F
Ford Motor Co. manufactures automobiles under its Ford and Lincoln brands. In March 2022, the company announced that it will run its combustion engine business, Ford Blue, and its BEV business, Ford Model e, as separate businesses but still all under Ford Motor. The company has over 13% market share in the United States, about 10% share in the UK, and just over 1% share in China including Taiwan and unconsolidated affiliates. Sales in the US made up about 65% of 2025 total company revenue. Ford has about 169,000 employees, including about 56,300 UAW employees, and is based in Dearborn, Michigan.
Market cap 46.6B · 169,000 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads F by 6 days
BRK.B tends to move before F.
After testing 13 timing shifts, the strongest relationship was -0.497 (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
+0.043
14 periods · Return correlation when both series rose
Both Falling
+0.622
10 periods · Return correlation when both series fell
Diverging
-0.654
11 periods · Return correlation when series moved apart
R-Squared
23.5%
Share of variance in one series explained by the other.
Trend Agreement
66.8%
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: [-0.526, -0.442]
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
Ford Motor Company
F
Market cap 46.6B · 169,000 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
-0.0147
Linear regression slope.
Intercept
18.5069
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-f-daily