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BRK-B compared with WRB: revenue, margins and what each company keeps, and the suppliers and customers both name
BRK-B
Berkshire Hathaway Inc
Change
Mkt cap
Revenue
Revenue
WRB
W. R. Berkley Corp
Change
Mkt cap
Revenue
Revenue
vs
Compare
BRK-B
Berkshire Hathaway Inc
vs
WRB
W. R. Berkley Corp
Price
Mkt cap
Revenue
Revenue
Change
Change
Revenue flow
Supply chain
Price
Co-movers
Event sensitivity
Earnings history
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BRK-B
Berkshire Hathaway Inc
Change
557.24
▲
+0.20%
· post 556.74
Mkt cap
$1.2T
Revenue
$102B
Q2 FY26
Revenue
$371B
FY25
WRB
W. R. Berkley Corp
Change
75.10
▼
−0.08%
· post 75.10
Closed
Nov 3 '26
Mkt cap
$27.9B
Revenue
$3.7B
Q3 FY26
Revenue
$14.7B
FY25
vs
Compare
Closed
Nov 3 '26
BRK-B
Berkshire Hathaway Inc
vs
WRB
W. R. Berkley Corp
557.24
▲
+0.20%
post 556.74
Price
75.10
▼
−0.08%
post 75.10
$1.2T
Mkt cap
$27.9B
Q2 FY26
$102B
Revenue
$3.7B
Q3 FY26
FY25
$371B
Revenue
$14.7B
FY25
Change
Change
BRK-B
557.24
▲
+0.20%
vs
WRB
75.10
▼
−0.08%
Closed
Nov 3 '26
Revenue flow
Supply chain
Price
Co-movers
Event sensitivity
Earnings history
Price
Supply-chain overlap
Revenue flow
WRB: latest quarter not drawable.
Method
›
Supply-chain overlap
direct ties · both sides
Sources
›
direct ties · both sides
Only BRK-B
0
None
Shared
0
No disclosed counterparties: BRK-B.
Only WRB
1
RYAN
Ryan Specialty
customer
Role chip = supplier or customer
Source: SEC EDGAR
Price
rebased to 0%
1D
1W
1M
3M
YTD
1Y
5Y
1D
1W
1M
3M
YTD
1Y
5Y
BRK-B, solid
WRB, dashed