MU
Micron Technology Inc
Micron Technology Inc historical holders
total: 21
Aquamarine Capital Micron Technology Inc transactions over time
- Total transactions:
- 4
- New positions:
- 1
- Sold out:
- 1
- Added:
- 1
- Reduced:
- 1
- Held since:
- 2019 Q3
- Held for:
- 25 quarters
- Latest activity:
- 2025 Q4
Guy Spier has been an institutional investor in Micron Technology Inc (MU) since 2019 Q3. According to 2026 Q2 report, Guy Spier doesn't hold any shares. The fund/company first acquired MU in 2019 Q3, initially purchasing 120,000 shares. Since the initial investment, Aquamarine Capital has made 3 more transactions in this position.
Estimated cost basis*
- Weighted AVG buy price:
- $55.78
- Weighted AVG sell price:
- $167.32
MU transactions history by Aquamarine Capital
4 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2025 Q4
|
0.00%
|
0
|
$167.32
|
|
-100% (-80,000)
|
-4.22%
|
|
2025 Q3
|
4.22%
|
80,000
|
$167.32
|
$13,386,000
|
-60.00% (-120,000)
|
-6.48%
|
|
2020 Q4
|
8.77%
|
$75.18
|
+66.67% (+80,000)
|
|||
|
2019 Q3
|
2.60%
|
$42.85
|
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.
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.