Correlation Analysis
BERKSHIRE HATHAWAY Class B vs The Hershey Company
BRK.B vs HSY
-0.402
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
The Hershey Company
↗HSY
Hershey is a leading US confectionery manufacturer (around a $55 billion market, according to Euromonitor), controlling 35% of the domestic chocolate aisle. Beyond its namesake label, the firm's portfolio has expanded over the last 85 years and now comprises 100 brands, including Reese's, Kit Kat, Kisses, and Ice Breakers. Hershey's products are sold in about 80 countries, albeit with just a high-single-digit percentage of sales coming from markets outside the US, including Brazil, India, and Mexico. The firm has sought inorganic opportunities to extend its reach beyond its core confectionery business, adding Amplify Snack Brands and its Skinny Pop ready-to-eat popcorn to its portfolio, as well as Pirate Brands, Dot's Pretzels, and LesserEvil over the past few years.
Market cap 42.2B · 19,595 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads HSY by 6 days
BRK.B tends to move before HSY.
After testing 13 timing shifts, the strongest relationship was -0.416 (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
-0.021
12 periods · Return correlation when both series rose
Both Falling
+0.455
7 periods · Return correlation when both series fell
Diverging
-0.652
16 periods · Return correlation when series moved apart
R-Squared
16.2%
Share of variance in one series explained by the other.
Trend Agreement
59.9%
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: [-0.448, -0.355]
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
The Hershey Company
HSY
Market cap 42.2B · 19,595 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
-0.1285
Linear regression slope.
Intercept
247.7141
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 7 hours ago · ID: stock-brk-b-vs-stock-hsy-daily