Correlation Analysis
BERKSHIRE HATHAWAY Class B vs United Parcel Service, Inc. Class B
BRK.B vs UPS
-0.918
Very strong 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
United Parcel Service, Inc. Class B
↗UPS
As the world's largest parcel delivery company, UPS manages a massive fleet of more than 500 planes and 100,000 vehicles, along with many hundreds of sorting facilities, to deliver an average of about 22 million packages per day to residences and businesses across the globe. UPS' domestic US package operations generate around 65% of total revenue, while international package makes up 20%. Air and ocean freight forwarding and contract logistics make up the remainder.
Market cap 82.6B · 460,000 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads UPS by 6 days
BRK.B tends to move before UPS.
After testing 13 timing shifts, the strongest relationship was -0.926 (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
-0.032
11 periods · Return correlation when both series rose
Both Falling
+0.284
7 periods · Return correlation when both series fell
Diverging
-0.642
17 periods · Return correlation when series moved apart
R-Squared
84.2%
Share of variance in one series explained by the other.
Trend Agreement
64.5%
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: [-0.926, -0.909]
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
United Parcel Service, Inc. Class B
UPS
Market cap 82.6B · 460,000 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
-0.4297
Linear regression slope.
Intercept
318.3698
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
-0.897
The Estee Lauder Companies Inc. Class A
EL · 1,254 data points
UPS
United Parcel Service, Inc. Class B
Highest
-0.213
Johnson & Johnson
JNJ · 1,254 data points
Lowest
-0.939
Meta Platforms, Inc. Class A Common Stock
META · 1,107 data points
Saved 4 hours ago · ID: stock-brk-b-vs-stock-ups-daily