Correlation Analysis
BERKSHIRE HATHAWAY Class B vs Expedia Group, Inc. Common Stock
BRK.B vs EXPE
+0.575
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
Expedia Group, Inc. Common Stock
↗EXPE
Expedia is the world's second-largest online travel agency by bookings, offering services for lodging (80% of total 2025 sales), air tickets (3%), rental cars, cruises, in-destination, and other (9%), and advertising revenue (8%). Expedia operates a number of branded travel booking sites, but its three core online travel agency brands are Expedia, Hotels.com, and alternative accommodations brand Vrbo. It also has a metasearch brand, Trivago. Transaction fees for online bookings account for the bulk of sales and profits.
Market cap 28.1B · 16,000 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads EXPE by 6 days
BRK.B tends to move before EXPE.
After testing 13 timing shifts, the strongest relationship was +0.578 (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
-0.019
13 periods · Return correlation when both series rose
Both Falling
+0.418
8 periods · Return correlation when both series fell
Diverging
-0.409
14 periods · Return correlation when series moved apart
R-Squared
33.0%
Share of variance in one series explained by the other.
Trend Agreement
63.1%
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: [0.537, 0.611]
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
Expedia Group, Inc. Common Stock
EXPE
Market cap 28.1B · 16,000 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
19
Estimated crossover points between normalized spreads.
Slope
0.3191
Linear regression slope.
Intercept
32.2867
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
EXPE
Expedia Group, Inc. Common Stock
Highest
+0.778
JPMorgan Chase & Co.
JPM · 1,254 data points
Lowest
+0.112
Exxon Mobil Corporation
XOM · 1,254 data points
Saved 7 hours ago · ID: stock-brk-b-vs-stock-expe-daily