Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Reliance, Inc.
BRK.B vs RS
+0.834
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
Reliance, Inc.
↗RS
Reliance Inc operates a network of companies providing diversified metal solutions and is the metals service center company. It distributes a full line of over 100,000 metal products, including alloy, aluminum, brass, copper, carbon steel, stainless steel, titanium and other specialty steel products. The company services more than 125,000 customers in a variety of industries, including consumer products, general manufacturing, non-residential construction, transportation, aerospace, energy, electronics and semiconductor fabrication, industrial machinery and heavy industry. It also services the auto industry, through its toll processing operations where it processes customer-owned metal for a fee.
Market cap 15.8B · 15,700 employees
Time Series
Relative Performance
Who Moves First
in sync
BRK.B and RS tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.834 (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
-0.059
17 periods · Return correlation when both series rose
Both Falling
+0.228
8 periods · Return correlation when both series fell
Diverging
-0.858
10 periods · Return correlation when series moved apart
R-Squared
69.6%
Share of variance in one series explained by the other.
Trend Agreement
67.3%
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: [0.817, 0.850]
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
Reliance, Inc.
RS
Market cap 15.8B · 15,700 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
25
Estimated crossover points between normalized spreads.
Slope
0.5788
Linear regression slope.
Intercept
25.8826
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-rs-daily