Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Tractor Supply Co
BRK.B vs TSCO
+0.848
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
Tractor Supply Co
↗TSCO
Tractor Supply is the largest operator of retail farm and ranch stores in the United States. The company targets recreational farmers and ranchers and has little exposure to commercial and industrial farm operations. Currently, the company operates 2,395 of its namesake banners in 49 states, along with 207 Petsense by Tractor Supply stores. Stores are generally concentrated in rural communities rather than urban and suburban areas. In fiscal 2025, revenue consisted primarily of livestock, equine & agriculture (around 30%), companion animal (25%), and seasonal & recreation (around 25%).
Market cap 23.9B · 52,000 employees
Time Series
Relative Performance
Who Moves First
TSCO leads BRK.B by 6 days
TSCO tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was +0.857 (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
+0.012
15 periods · Return correlation when both series rose
Both Falling
+0.827
8 periods · Return correlation when both series fell
Diverging
-0.799
12 periods · Return correlation when series moved apart
R-Squared
72.0%
Share of variance in one series explained by the other.
Trend Agreement
61.8%
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: [0.832, 0.863]
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
Tractor Supply Co
TSCO
Market cap 23.9B · 52,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.0685
Linear regression slope.
Intercept
21.1617
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-tsco-daily