Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Howmet Aerospace Inc.
BRK.B vs HWM
+0.887
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
Howmet Aerospace Inc.
↗HWM
Howmet Aerospace Inc offers engineered solutions for the aerospace and transportation industries. The company's products and solutions include investment castings for jet engines and industrial gas turbines; seamless rolled rings for jet engines; fastening systems for aerospace, industrial and commercial transportation applications; forged jet engine components (e.g., jet engine disks); machined and forged aircraft parts; and forged aluminum commercial vehicle wheels, all of which are sold directly to customers or through distributors. It has four reportable segments: Engine Products, which derives key revenue, Fastening Systems, Engineered Structures, and Forged Wheels. Geographically, the company derives maximum revenue from the USA, followed by France, Japan, Germany, and other markets.
Market cap 94.9B · 25,430 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads HWM by 6 days
BRK.B tends to move before HWM.
After testing 13 timing shifts, the strongest relationship was +0.891 (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
-0.330
15 periods · Return correlation when both series rose
Both Falling
N/A
4 periods · Return correlation when both series fell
Diverging
-0.613
16 periods · Return correlation when series moved apart
R-Squared
78.6%
Share of variance in one series explained by the other.
Trend Agreement
66.5%
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: [0.874, 0.898]
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
Howmet Aerospace Inc.
HWM
Market cap 94.9B · 25,430 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
16
Estimated crossover points between normalized spreads.
Slope
0.6625
Linear regression slope.
Intercept
-168.1988
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-hwm-daily