David Tepper's Appaloosa Management holds 975K shares of Micron Technology Inc (MU) worth about $1.1B as of June 30, 2026, according to the 13F-HR filed with the SEC on August 14, 2026. The position is 15.06% of the reported portfolio, the 2nd largest of 25 stock positions. David Tepper trimmed the share count by 41% in 2026 Q2.
What did the 2026 Q2 filing report for MU?
As of June 30, 2026, from the 13F-HR filed August 14, 2026.
| Value | |
|---|---|
| Portfolio weight | 15.06% |
| Shares | 975K |
| Reported value | $1.1B |
| Rank in portfolio | 2nd of 25 |
| Largest holding | AMZN at 15.95% |
| Top three holdings | 41.56% of the book |
| Change this quarter | -41% shares |
How concentrated is David Tepper in MU?
MU at 15.06% is 3.8 times the average stock position in the David Tepper portfolio, which is 4%. The largest holding is AMZN at 15.95%. The three largest stocks together are 41.56% of the reported book. A quarter earlier MU was 9.48% of the book.
Where does MU sit in the David Tepper portfolio?
MU ranks 2nd of 25 stock positions in the David Tepper portfolio at 15.06%, above the fund's average stock position of 4%. The MU cut was the largest of the quarter's 34 position changes by percent change to portfolio. Across the 2026 Q2 portfolio, David Tepper reported 25 stock positions, with 6 opened and 12 closed. The total portfolio value is about $7.5B, up 26% from the prior quarter.
How long has David Tepper held MU?
David Tepper first reported MU in the quarter ended March 31, 2015. The fund sold out of the name in 2022 Q3 and came back in 2023 Q2. The weight peaked at 28.62% in 2018 Q3. Last quarter the fund added to the position by 11%. Every reported trade is on the David Tepper MU trade history page.
Did other funds buy or sell MU in 2026 Q2?
Among the other tracked funds that had filed for 2026 Q2 as of August 14, 2026, 2 hold MU. Of those, one opened it this quarter. The largest buyer of MU this quarter was Paul Lountzis. The largest seller was Parnassus Endeavor Fund. Every tracked holder of MU is on the MU ownership page.
FAQ
What share of the David Tepper portfolio is MU?
MU is 15.06% of the David Tepper portfolio as of 2026 Q2, the 2nd largest of 25 stock positions.
What is the MU stake of David Tepper worth?
David Tepper holds 975K shares of MU, worth about $1.1B at June 30, 2026 prices, 15.06% of the reported portfolio.
What are the largest holdings of David Tepper?
The largest stock positions of David Tepper as of 2026 Q2 are AMZN (15.95%), MU (15.06%) and TSM (10.55%), together 41.56% of the book.
Did David Tepper's Appaloosa Management change its MU position in 2026 Q2?
David Tepper trimmed the share count by 41% in 2026 Q2.