Correlation Analysis
BERKSHIRE HATHAWAY Class B vs DoorDash, Inc. Class A Common Stock
BRK.B vs DASH
+0.610
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
DoorDash, Inc. Class A Common Stock
↗DASH
Founded in 2013 within the confines of the San Francisco application renaissance, DoorDash is an online delivery demand aggregator. Consumers can use its app to order food on demand for delivery or in-store pickup from participating merchants. Following the 2022 acquisition of Wolt, the firm also provides this service in Europe and Asia. DoorDash creates a marketplace for merchants to establish an online presence, market their offerings, and meet demand through delivery. The firm provides similar services to non-restaurant businesses, such as grocery, retail, and pet supplies. DoorDash is also rolling out emerging technologies, such as drone delivery, to continually innovate and deliver the best possible service to both supply-side and demand-side participants in its marketplace.
Market cap 67.4B · 31,400 employees
Time Series
Relative Performance
Who Moves First
BRK.B leads DASH by 6 days
BRK.B tends to move before DASH.
After testing 13 timing shifts, the strongest relationship was +0.615 (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
+0.160
13 periods · Return correlation when both series rose
Both Falling
+0.405
6 periods · Return correlation when both series fell
Diverging
-0.552
16 periods · Return correlation when series moved apart
R-Squared
37.2%
Share of variance in one series explained by the other.
Trend Agreement
54.8%
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: [0.574, 0.644]
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
DoorDash, Inc. Class A Common Stock
DASH
Market cap 67.4B · 31,400 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
35
Estimated crossover points between normalized spreads.
Slope
0.4500
Linear regression slope.
Intercept
-35.0046
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
DASH
DoorDash, Inc. Class A Common Stock
Highest
+0.886
NetFlix Inc
NFLX · 1,254 data points
Lowest
-0.011
Exxon Mobil Corporation
XOM · 1,254 data points
Saved 6 hours ago · ID: stock-brk-b-vs-stock-dash-daily