Correlation Analysis
BERKSHIRE HATHAWAY Class B vs PayPal Holdings, Inc. Common Stock
BRK.B vs PYPL
-0.542
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
PayPal Holdings, Inc. Common Stock
↗PYPL
PayPal was spun off from eBay in 2015 and provides electronic payment solutions to merchants and consumers, with a focus on online transactions. The company had 434 million active accounts at the end of 2024. The company also owns Venmo, a person-to-person payment platform.
Market cap 41.9B · 23,800 employees
Time Series
Relative Performance
Who Moves First
in sync
BRK.B and PYPL tend to move at the same time.
After testing 13 timing shifts, the strongest relationship was -0.542 (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
-0.232
6 periods · Return correlation when both series rose
Both Falling
+0.199
6 periods · Return correlation when both series fell
Diverging
-0.344
23 periods · Return correlation when series moved apart
R-Squared
29.4%
Share of variance in one series explained by the other.
Trend Agreement
62.0%
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: [-0.580, -0.502]
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
PayPal Holdings, Inc. Common Stock
PYPL
Market cap 41.9B · 23,800 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
-0.4409
Linear regression slope.
Intercept
268.1943
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
PYPL
PayPal Holdings, Inc. Common Stock
Highest
-0.013
Amazon.Com Inc
AMZN · 1,254 data points
Lowest
-0.854
Exxon Mobil Corporation
XOM · 1,254 data points
Saved 7 hours ago · ID: stock-brk-b-vs-stock-pypl-daily