Correlation Analysis
BERKSHIRE HATHAWAY Class B vs RBC Bearings Incorporated
BRK.B vs RBC
+0.850
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
RBC Bearings Incorporated
↗RBC
RBC Bearings Inc is an international manufacturer and marketer of engineered precision bearings, components, and essential systems for the industrial, defense, and aerospace industries. The offering includes plain bearings, roller bearings, ball bearings, and engineered products. The company has two reportable segments: Industrial, which derives maximum revenue, and Aerospace/Defense. The Aerospace/Defense segment represents the end markets for the company's engineered bearings and precision components used in commercial aerospace, defense aerospace, and sea and ground defense applications; and the Industrial segment represents the end markets for its products used in various industrial applications. Geographically, the company generates a majority of its revenue from the United States.
Market cap 17.5B · 5,334 employees
Time Series
Relative Performance
Who Moves First
RBC leads BRK.B by 5 days
RBC tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was +0.851 (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
-0.159
12 periods · Return correlation when both series rose
Both Falling
+0.712
7 periods · Return correlation when both series fell
Diverging
-0.646
16 periods · Return correlation when series moved apart
R-Squared
72.3%
Share of variance in one series explained by the other.
Trend Agreement
66.3%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,009
Deep shared window — 1,009 usable pairs.
Significance
p < 0.001
95% CI: [0.832, 0.867]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,009 paired data points survived the daily window.
Raw input
1,254
1,009
Normalized
1,254
1,009
Prepared
1,254
1,009
Aligned
1,009
1,009
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
245
A: 245 / B: 0
Series A
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
RBC Bearings Incorporated
RBC
Market cap 17.5B · 5,334 employees
Stock · 1,009 raw → 1,009 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
19
Estimated crossover points between normalized spreads.
Slope
1.0330
Linear regression slope.
Intercept
-122.9600
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-rbc-daily