Aquamarine Capital Berkshire Hathaway Inc transactions over time
BRK-B
Berkshire Hathaway Inc historical holders
total: 35
Transactions details
- Total transactions:
- 2
- New positions:
- 1
- Reduced:
- 1
- Held since:
- 2014 Q4
- Held for:
- 47 quarters
- Latest activity:
- 2025 Q4
Guy Spier has been an institutional investor in Berkshire Hathaway Inc (BRK-B) since 2014 Q4. According to 2026 Q2 report, Guy Spier holds 97,600 shares with a market value of roughly $48.84M representing 33.89% of their equity portfolio. The fund/company first acquired BRK-B in 2014 Q4, initially purchasing 140,600 shares. Since the initial investment, Aquamarine Capital has made 1 more transaction in this position.
Estimated cost basis*
- Weighted AVG buy price:
- $150.15
- Weighted AVG sell price:
- $502.65
* 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.
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.