Correlation Analysis
BERKSHIRE HATHAWAY Class B vs SoFi Technologies, Inc. Common Stock
BRK.B vs SOFI
+0.476
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
SoFi Technologies, Inc. Common Stock
↗SOFI
SoFi is a financial-services company that was founded in 2011 and is based in San Francisco. Initially known for its student loan refinancing business, the company has expanded its product offerings to include personal loans, credit cards, mortgages, investment accounts, banking services, and financial planning. The company intends to be a one-stop shop for its clients' finances and operates solely through its mobile app and website. Through its acquisition of Galileo in 2020, the company also offers payment and account services for debit cards and digital banking.
Market cap 20.7B · 6,100 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads SOFI by 6 days
BRK.B tends to move before SOFI.
After testing 13 timing shifts, the strongest relationship was +0.491 (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
-0.209
8 periods · Return correlation when both series rose
Both Falling
-0.219
9 periods · Return correlation when both series fell
Diverging
-0.495
18 periods · Return correlation when series moved apart
R-Squared
22.6%
Share of variance in one series explained by the other.
Trend Agreement
57.3%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,218
Deep shared window — 1,218 usable pairs.
Significance
p < 0.001
95% CI: [0.431, 0.518]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,218 paired data points survived the daily window.
Raw input
1,254
1,218
Normalized
1,254
1,218
Prepared
1,254
1,218
Aligned
1,218
1,218
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
36
A: 36 / B: 0
Series A
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
SoFi Technologies, Inc. Common Stock
SOFI
Market cap 20.7B · 6,100 employees
Stock · 1,218 raw → 1,218 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.0388
Linear regression slope.
Intercept
-2.6011
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
SOFI
SoFi Technologies, Inc. Common Stock
Highest
+0.778
Tesla, Inc. Common Stock
TSLA · 1,218 data points
Lowest
-0.006
Exxon Mobil Corporation
XOM · 1,218 data points
Saved 7 hours ago · ID: stock-brk-b-vs-stock-sofi-daily