Correlation Analysis
Ball Corporation vs BERKSHIRE HATHAWAY Class B
BALL vs BRK.B
-0.099
Weak inverse
When one moves up, the other tends to move down.
Ball Corporation
↗BALL
Ball is the world's largest metal can manufacturer with market share over 30% in its three main regions (North America, Europe, and South America). The company is focused on increasing capacity amid a wave of new developed-market demand, while also investing in faster-growing emerging-market economies. Ball spun-off its glass jar business in 1993 and is now owned by Newell. The company reports three segments-beverage packaging, North and Central America (48% of 2025 revenue), beverage packaging, EMEA (30%), beverage packaging, South America (16%)-and it generated $13 billion in revenue in 2025.
Market cap 15.9B · 16,000 employees
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
Time Series
Relative Performance
Who Moves First
BALL leads BRK.B by 6 days
BALL tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was -0.119 (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
+0.204
13 periods · Return correlation when both series rose
Both Falling
-0.086
9 periods · Return correlation when both series fell
Diverging
-0.688
13 periods · Return correlation when series moved apart
R-Squared
1.0%
Share of variance in one series explained by the other.
Trend Agreement
62.8%
How often both series moved in the same direction period-to-period.
Overlap Quality
980
Deep shared window — 980 usable pairs.
Significance
p < 0.01
95% CI: [-0.161, -0.037]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
980 paired data points survived the daily window.
Raw input
980
1,254
Normalized
980
1,254
Prepared
980
1,254
Aligned
980
980
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
274
A: 0 / B: 274
Series A
Ball Corporation
BALL
Market cap 15.9B · 16,000 employees
Stock · 980 raw → 980 prepared
Series B
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
11
Estimated crossover points between normalized spreads.
Slope
-1.1993
Linear regression slope.
Intercept
471.0061
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-ball-vs-stock-brk-b-daily