Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Yum! Brands, Inc.
BRK.B vs YUM
+0.824
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
Yum! Brands, Inc.
↗YUM
As of the end of 2025, Yum Brands generated over $68 billion in systemwide sales from more than 63,000 restaurants across 155 markets, making it the world's second-largest restaurant firm by dollar sales. Its portfolio includes KFC (33,897 stores), Pizza Hut (19,974), Taco Bell (9,030), and Habit Burger (384), with 72% of locations in international markets. As 97% of its portfolio is franchised, Yum's business model is tilted toward recurring franchise royalties and marketing contributions (64% of revenue), with the balance derived from sales at company-owned locations. The company traces its roots to a 1997 spinoff of PepsiCo's restaurant assets.
Market cap 43.5B · 49,000 employees
Time Series
Relative Performance
Who Moves First
in sync
BRK.B and YUM tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.824 (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
+0.053
14 periods · Return correlation when both series rose
Both Falling
+0.097
8 periods · Return correlation when both series fell
Diverging
-0.647
13 periods · Return correlation when series moved apart
R-Squared
67.8%
Share of variance in one series explained by the other.
Trend Agreement
62.7%
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: [0.805, 0.841]
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
Yum! Brands, Inc.
YUM
Market cap 43.5B · 49,000 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
0.1218
Linear regression slope.
Intercept
86.5485
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-yum-daily