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Filing-backed signals

Latest ownership changes

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13F manager update

MARKEL GROUP INC.

Thomas Gayner

13F Smart money
CIK
0001096343
Security
BERKSHIRE HATHAWAY INC DEL, ALPHABET INC, BERKSHIRE HATHAWAY INC DEL, BROOKFIELD CORP, DEERE & CO
Source
SEC Form 13F
Action
Latest 13F portfolio update
Magnitude
$11,914,512,575
Period
Q1 2026

Top reported holdings: BERKSHIRE HATHAWAY INC DEL, ALPHABET INC, BERKSHIRE HATHAWAY INC DEL, BROOKFIELD CORP, DEERE & CO.

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Insider signal

Gregory E. Abel

Des Moines, IA

Insider Ownership
CIK
0001646348
Security
BRK.A
Source
SEC Forms 3/4/5
Action
Reported ownership activity
Magnitude
$182,591,700
Period
04 Mar 2026

Top reported symbols: BRK.A.

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Large-stake radar

Track 13D/G ownership changes

Large holders and activist-style filings

13D/G Large stake
Source
SEC Schedule 13D/G
Action
Review new and amended beneficial ownership reports
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Company filing context

AMAZON COM INC

AMZN

AMZN Issuer
CIK
0001018724
Security
AMZN
Source
SEC company facts
Action
Open company facts and ownership context
Magnitude
Seattle, WA

Industry: Retail-Catalog and Mail-Order Houses.

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Related SEC paths

Additional CIK/CUSIP links surfaced from recent recovery signals.

037833100 13F holders 594918104 13F holders SCHEDULE 13D/A Howard Hughes Holdings Inc.

SEC-backed rankings

Company-fact rankings

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Cash and Equivalents Operating Cash Flow Capital Expenditures

Ownership move preview

Largest parsed ownership moves

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Insider buying

Largest net insider buys in the current 3 months window.

Insider market mover

Berkshire Hathaway Inc

BRK-B, BRK-A

Form 4 Insider
CIK
BRK-B, BRK-A
Source
SEC Forms 3/4/5 aggregate
Action
Insider net buying
Magnitude
$15,308,372
Period
11 May 2026 - 11 Aug 2026

1 net insiders bought over the current 3 months window.

View details Save insider mover
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