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Berkshire Hathaway Inc

BRK-A

Berkshire Hathaway Inc

Berkshire Hathaway Inc historical holders

total: 18

Aquamarine Capital Berkshire Hathaway Inc transactions over time

Total transactions:
1
New positions:
1
Held since:
2014 Q4
Held for:
47 quarters
Latest activity:
2014 Q4
Guy Spier has been an institutional investor in Berkshire Hathaway Inc (BRK-A) since 2014 Q4. According to 2026 Q2 report, Guy Spier holds 30 shares with a market value of roughly $22.47M representing 15.59% of their equity portfolio. The fund/company first acquired BRK-A in 2014 Q4, initially purchasing 30 shares.

Does Guy Spier still hold BRK-A?

Yes, Guy Spier continues to hold Berkshire Hathaway Inc (BRK-A). According to their 2026 Q2 report, they maintain a position of 30 shares valued at approximately $22.47M, representing 15.59% of their equity portfolio.

When did Guy Spier first invest in BRK-A?

Guy Spier first invested in Berkshire Hathaway Inc (BRK-A) in 2014 Q4 at the reported quarter-end price of $226,000.00 per share, acquiring 30 shares in their initial purchase.

What is Guy Spier's average cost basis for BRK-A?

Based on historical transaction data, Guy Spier's estimated cost basis for Berkshire Hathaway Inc (BRK-A) is approximately $226,000.00 per share. This represents their average reported price* across all buy transactions.

Estimated cost basis*

Weighted AVG buy price:
$226,000.00

BRK-A transactions history by Aquamarine Capital

1 result
Period % of
portfolio
Shares
held after*
Reported
price*
Value* % (shares)
of activity
% change
to portfolio
2014 Q4
4.49%
$226,000.00
new
* Shares, change to shares, sold shares, shares held after: split-adjusted.
* Reported price: this doesn't represent the actual buy or sell price. It is the split-adjusted price of the security as of the last day of the reported period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
* Estimated cost basis: based on "Reported price*" (not earlier than 2013 Q2). Calculation starts from the latest "new buy" activity to the latest "close out" activity (if any).
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* New buy or own: this means there is no earlier reporting (for us or in general). So we can't know if the actual purchase of the security happened at the reported period or earlier.