Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Symbotic Inc. Class A Common Stock
BRK.B vs SYM
+0.518
Moderate 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
Symbotic Inc. Class A Common Stock
↗SYM
Symbotic Inc. is an automation technology company that develops solutions to improve operating efficiencies in modern warehouses. The group designs, commercializes, and deploys end-to-end technology systems that significantly enhance supply chain operations. The company automates the processing of pallets, cases, and individual items within warehouse environments. Its systems strengthen operations at the front end of the supply chain and provide benefits to all supply partners downstream. The company operates in two geographical regions: the United States and international markets, with the majority of its revenue generated in the United States.
Market cap 6.7B · 2,000 employees
Time Series
Relative Performance
Who Moves First
in sync
BRK.B and SYM tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was +0.518 (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
+0.071
7 periods · Return correlation when both series rose
Both Falling
N/A
4 periods · Return correlation when both series fell
Diverging
-0.759
24 periods · Return correlation when series moved apart
R-Squared
26.8%
Share of variance in one series explained by the other.
Trend Agreement
55.0%
How often both series moved in the same direction period-to-period.
Overlap Quality
960
Deep shared window — 960 usable pairs.
Significance
p < 0.001
95% CI: [0.470, 0.562]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
960 paired data points survived the daily window.
Raw input
1,254
960
Normalized
1,254
960
Prepared
1,254
960
Aligned
960
960
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
294
A: 294 / B: 0
Series A
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
Symbotic Inc. Class A Common Stock
SYM
Market cap 6.7B · 2,000 employees
Stock · 960 raw → 960 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
13
Estimated crossover points between normalized spreads.
Slope
0.1059
Linear regression slope.
Intercept
-8.0033
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
BRK.B
BERKSHIRE HATHAWAY Class B
Highest
+0.968
Republic Services Inc.
RSG · 1,254 data points
Lowest
-0.918
United Parcel Service, Inc. Class B
UPS · 1,254 data points
SYM
Symbotic Inc. Class A Common Stock
Highest
+0.736
Alphabet Inc. Class C Capital Stock
GOOG · 960 data points
Lowest
+0.413
Exxon Mobil Corporation
XOM · 960 data points
Saved 7 hours ago · ID: stock-brk-b-vs-stock-sym-daily