Skip to main content
Livermore
Livermore
ZHEN

Aquamarine

Superinvestor

Aquamarine Zurich AG

SEC CIK
0001953324
Manager
Guy Spier
Style
Value
Latest filing
Jul 10, 2026

Predecessor filersAquamarine Capital Management, LLC

BRK.A holding history

Berkshire Hathaway Inc in every 13F filed by Aquamarine, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

BRK.A overviewAll 13F holders of BRK.AFull Q2 2026 holdings

Shares (Q2 2026)
30
Value
$22.5M
% of portfolio
15.6%
Quarters held
16
Since Q3 2022
Holdings of BRK.A by Aquamarine, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 202630$22.5M15.6%00.0%UnchangedHolders
Q1 202630$21.5M15.9%00.0%UnchangedHolders
Q4 202530$22.6M15.3%00.0%UnchangedHolders
Q3 202530$22.6M7.1%00.0%UnchangedHolders
Q2 202530$21.9M7.1%00.0%UnchangedHolders
Q1 202530$24.0M8.2%00.0%UnchangedHolders
Q4 202430$20.4M7.1%00.0%UnchangedHolders
Q3 202430$20.7M7.3%00.0%UnchangedHolders
Q2 202430$18.4M7.0%00.0%UnchangedHolders
Q1 202430$19.0M7.3%00.0%UnchangedHolders
Q4 202330$16.3M7.1%00.0%UnchangedHolders
Q3 202330$15.9M7.9%00.0%UnchangedHolders
Q2 202330$15.5M7.4%00.0%UnchangedHolders
Q1 202330$14.0M7.2%00.0%UnchangedHolders
Q4 202230$14.1M7.6%00.0%UnchangedHolders
Q3 202230$12.2M7.4%–No prior filingHolders