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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
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BRK-A

BERKSHIRE HATHAWAY INC

Fire, Marine & Casualty Insurance · SIC 6331CIK 1067983Held by 18 tracked managersEDGAR filings ↗10-K/10-Q ↗

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18 managers · Q2 2026 13F
Punch Card Management
Norbert LouPosition history →
42.4%
—
Chou Associates
Francis ChouPosition history →
29.7%
—
Greenlea Lane Capital
Josh TarasoffPosition history →
13.0%
—
Gardner Russo & Quinn
Thomas RussoPosition history →
12.0%
(1.9%)
Semper Augustus
Christopher BloomstranPosition history →
10.2%
+3.4%
Tweedy Browne
Tweedy BrownePosition history →
8.2%
—
Markel Group
Tom GaynerPosition history →
6.4%
—
Davis Advisors
Christopher DavisPosition history →
2.8%
(6.0%)
Ashford Capital Management
Ashford Capital ManagementPosition history →
1.8%
—
Ruane Cunniff
Ruane CunniffPosition history →
1.2%
(6.4%)
First Eagle Investment Management
First EaglePosition history →
0.70%
—
Fairholme Capital
Bruce BerkowitzPosition history →
0.55%
+450.0%
Giverny Capital
Francois RochonPosition history →
0.23%
(18.2%)
Fairview Capital Investment Management
Fairview Capital Investment ManagementPosition history →
0.04%
—
Capital World Investors
Capital World InvestorsPosition history →
0.04%
NEW
Mairs & Power
Mairs & PowerPosition history →
0.03%
—
Fairfax Financial Holdings
Prem WatsaPosition history →
0.03%
—
Dodge & Cox
Dodge & CoxPosition history →
<0.01%
—

Weight = position value ÷ the manager's total 13F long-equity value in the same filing — one definition for every row. “1st obs.” marks a position with no earlier stored 13F to compare against — it is not shown as a purchase.