Tepper's Appaloosa opened 7.5 million shares in AAL and 800,000 in Boeing as Berkshire and Druckenmiller also entered aviation the same quarter. Tepper tripled Appaloosa's Micron stake in early 2026, helping the fund return 32% in H1 2026 as MU surged 677% over the trailing year. Boeing delivered 171 aircraft in Q2, its highest total since 2018, and holds a $715 billion backlog, while AAL posted record revenue up 16% year-over-year.
Act now: the analyst who called NVIDIA in 2010 just named his top 10 AI stocks — and Boeing didn't make the cut. Grab the names FREE today. David Tepper's Appaloosa Management disclosed brand-new stakes in American Airlines and Boeing in its Q2 2026 13F filing (positions as of June 30, 2026, disclosed roughly 45 days later).
That filing pulls the billionaire who nailed the memory-chip cycle into aviation. The move deserves scrutiny because of what it signals about where he is hunting next. Tepper tripled Appaloosa's Micron stake in early 2026.
Micron Technology (NASDAQ:MU) has since ripped: shares closed at $971.66 on August 14, 2026, up 240.65% year to date and 676.79% over the trailing year. Rising fundamentals continue to validate the trade: fiscal Q3 revenue of $41.5 billion (up 346% year-over-year), non-GAAP EPS of $25.11, and Q4 guidance of $50 billion in revenue with EPS of $31 plus or minus $1. SanDisk (Nasdaq: SNDK), a position that Tepper completely sold out of last quarter, just issued 2028 to 2030 guidance that points to gross margins stayign elevated at 80% in that period.
That's extremely bullish for memory stocks, as it points to longer duration pricing power than the market is currently expecting. Appaloosa returned 32% in the first half of 2026, and Bloomberg reported on July 6, 2026 that the gain was driven by memory-chip makers. Even after trimming in Q2 2026, Micron remained one of Appaloosa's largest disclosed lines at 975,000 shares valued at $1,125,432,750, with the position reduced by 690,000 shares.
He took some chips off the table but did not walk away. The fresh disclosures tell the story. Appaloosa opened a new position in American Airlines of 7,500,000 shares valued at $135,525,000, one of its largest new positions by share count in the entire filing.
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