Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Sun Communities, Inc
BRK.B vs SUI
-0.644
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
Sun Communities, Inc
↗SUI
Sun Communities is a residential REIT that focuses on owning manufactured housing and residential vehicle communities. The company currently owns a portfolio of 513 properties, which includes 347 manufactured housing communities and 166 residential vehicle communities. Sun targets owning properties that are desirable as second homes or vacation properties, with nearly 50% of the portfolio located in either Florida or Michigan near major bodies of water.
Market cap 15.8B · 3,614 employees
Time Series
Relative Performance
Who Moves First
SUI leads BRK.B by 6 days
SUI tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was -0.651 (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
-0.028
11 periods · Return correlation when both series rose
Both Falling
+0.011
9 periods · Return correlation when both series fell
Diverging
-0.524
15 periods · Return correlation when series moved apart
R-Squared
41.5%
Share of variance in one series explained by the other.
Trend Agreement
62.1%
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: [-0.675, -0.610]
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
Sun Communities, Inc
SUI
Market cap 15.8B · 3,614 employees
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
-0.1955
Linear regression slope.
Intercept
217.7740
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-sui-daily