Quarter-end position / Version 1 · published

AON PLC.

Reporting manager / owner
Berkshire Hathaway Inc
Relationship
Associated institution
Record date
2025-12-31
Date meaning
Original Form 13F report period
CUSIP / security class
G0403H108 / SHS CL A
Quantity
3,602,995 shares
Reported value / amount
$1,271,424,876
Weight / denominator
0.463753% · Calculated: issuer/class value divided by the complete original reported table; not personal wealth
Quarter-end reported price
Not disclosed; not purchase cost
Derived value per reported unit
352.88; reported value ÷ quantity, not observed market price
Source-reported activity
Not disclosed
Coverage
Complete original information table grouped by CUSIP and security class
Reviewed by
DeepSeek AI
Published
20 Oct 2026

Original regulatory disclosure; 3 original filing line(s) grouped within this issuer/class. Absence from a disclosed table is not private account verification.

Reporting-entity association

Original filing attribution · 3 line(s)

Reporting manager: Berkshire Hathaway Inc. 13F HOLDINGS REPORT. These are reported investment-discretion relationships, not proof of beneficial ownership or a personal account. Each original line is counted once, including lines naming multiple managers.

Other included managers: 1 / Berkshire Hathaway Homestate Insurance Co.; 2 / Berkshire Hathaway Life Insurance Co of Nebraska; 3 / BH Finance LLC; 4 / Buffett Warren E; 5 / Columbia Insurance Co; 6 / Cypress Insurance Co; 7 / General Re Corp; 8 / GEICO Corp; 9 / Medical Protective Corp; 10 / National Fire & Marine Insurance Co; 11 / National Indemnity Co; 12 / National Liability & Fire Insurance Co; 13 / Nebraska Furniture Mart; 14 / U.S. Investment Corp.

ORIGINAL LINEREPORTED QUANTITY / VALUEOTHER MANAGER / DISCRETIONVOTING AUTHORITY
1041,806,995 shares$637,652,396Buffett Warren EOriginal field: 4 · Discretion: DFNDSole 1,806,995Shared 0 · None 0
10543,806 shares$15,458,261Berkshire Hathaway Life Insurance Co of Nebraska; Buffett Warren E; National Indemnity CoOriginal field: 2,4,11 · Discretion: DFNDSole 43,806Shared 0 · None 0
1061,752,194 shares$618,314,219Buffett Warren E; National Indemnity CoOriginal field: 4,11 · Discretion: DFNDSole 1,752,194Shared 0 · None 0

Read the full editorial review note ↗

Copy a dated citation ↗

Sources.

Berkshire Hathaway Inc — 13F-HR — 2025-12-31 · U.S. SEC EDGAR · Published 17 Feb 2026 · Collected 20 Oct 2026 · Evidence details ↗

Version history.

Version 1 · published · 20 Oct 2026 · Full review note

Suggest a correction ↗

Copy a dated citation.

If copying is unavailable, select the text above and copy it manually.