Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Samsara Inc.
BRK.B vs IOT
+0.843
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
Samsara Inc.
↗IOT
Samsara Inc provides an end-to-end solution for operations. The company's Connected Operations Platform consolidates data from its IoT devices and a growing ecosystem of connected assets and third-party systems, and makes it easy for organizations to access, analyze, and act on data insights using its cloud dashboard, custom alerts and reports, mobile apps, and workflows. The company derives almost all of its revenue from subscription services. Geographically, it derives a majority of its revenue from the United States. The company's customers range from small and medium-sized businesses to state and local governments.
Market cap 18.3B · 4,100 employees
Time Series
Relative Performance
Who Moves First
IOT leads BRK.B by 6 days
IOT tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was +0.850 (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
-0.048
14 periods · Return correlation when both series rose
Both Falling
+0.411
9 periods · Return correlation when both series fell
Diverging
-0.690
12 periods · Return correlation when series moved apart
R-Squared
71.1%
Share of variance in one series explained by the other.
Trend Agreement
56.1%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,080
Deep shared window — 1,080 usable pairs.
Significance
p < 0.001
95% CI: [0.825, 0.860]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,080 paired data points survived the daily window.
Raw input
1,254
1,080
Normalized
1,254
1,080
Prepared
1,254
1,080
Aligned
1,080
1,080
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
174
A: 174 / B: 0
Series A
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
Samsara Inc.
IOT
Market cap 18.3B · 4,100 employees
Stock · 1,080 raw → 1,080 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
0.1283
Linear regression slope.
Intercept
-21.2328
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-iot-daily