Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Tyson Foods, Inc.
BRK.B vs TSN
-0.540
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
Tyson Foods, Inc.
↗TSN
Tyson Foods is a protein-focused food producer, selling raw chicken, beef, pork, and prepared foods. Chicken and beef are its two largest segments, composing about 40% and 30% of sales, respectively. Prepared foods constituted 18% of fiscal 2025 sales and include brands like Tyson, Jimmy Dean, Hillshire Farm, Ball Park, and Sara Lee. However, most of these are in product categories rife with competition where Tyson does not have a massive market share lead. Tyson sells some products overseas, but the international segment accounts for just 4% of total revenue. The company is an active acquirer, with more recent years' purchases focused on international and food-service markets.
Market cap 22.7B · 133,000 employees
Time Series
Relative Performance
Who Moves First
TSN leads BRK.B by 6 days
TSN tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was -0.552 (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
-0.188
16 periods · Return correlation when both series rose
Both Falling
-0.066
11 periods · Return correlation when both series fell
Diverging
-0.336
8 periods · Return correlation when series moved apart
R-Squared
29.1%
Share of variance in one series explained by the other.
Trend Agreement
63.5%
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: [-0.578, -0.499]
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
Tyson Foods, Inc.
TSN
Market cap 22.7B · 133,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
7
Estimated crossover points between normalized spreads.
Slope
-0.0818
Linear regression slope.
Intercept
96.0622
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-tsn-daily