Stephen Mandel's Lone Pine Capital opened a new position in Applied Materials Inc (AMAT) in 2026 Q2, according to the 13F-HR filed with the SEC on August 14, 2026. The filing lists 1.21M shares worth about $873.2M at June 30, 2026, 5.34% of the reported portfolio. AMAT enters the book as the 5th largest of 34 stock positions.
What did the 2026 Q2 filing report for AMAT?
As of June 30, 2026, from the 13F-HR filed August 14, 2026.
| Value | |
|---|---|
| Shares | 1.21M |
| Reported value | $873.2M |
| Portfolio weight | 5.34% |
| Rank in portfolio | 5th of 34 |
How big is the new AMAT position?
Stephen Mandel opened 13 stock positions in 2026 Q2; AMAT is the 4th largest of them by weight. An average stock position in the Stephen Mandel portfolio is 3% of the reported value, so the new name comes in above the fund's typical size.
Where does AMAT sit in the Stephen Mandel portfolio?
AMAT ranks 5th of 34 stock positions in the Stephen Mandel portfolio at 5.34%, above the fund's average stock position of 3%. The AMAT purchase was the 5th largest of the quarter's 49 position changes by percent change to portfolio. The largest stock position is NBIS at 7.19%. Next come ASML at 6.92% and STX at 5.9%. The three largest stocks together are 20.01% of the book. Across the 2026 Q2 portfolio, Stephen Mandel reported 34 stock positions, with 13 opened and 15 closed. The total portfolio value is about $16.4B, up 30% from the prior quarter.
Has Stephen Mandel held AMAT before?
Stephen Mandel has not reported AMAT before in the filings we track. Our data starts with the quarter ended June 30, 2013.
Did other funds buy or sell AMAT in 2026 Q2?
Among the other tracked funds that had filed for 2026 Q2 as of August 14, 2026, 9 hold AMAT. Of those, one opened it this quarter. The largest buyer of AMAT this quarter was John Armitage. The largest sellers were Lewis Sanders, Chase Coleman III and William Von Mueffling. Every tracked holder of AMAT is on the AMAT ownership page.
FAQ
How many AMAT shares does Stephen Mandel hold?
Stephen Mandel holds 1.21M shares of AMAT as of June 30, 2026, worth about $873.2M.
What is AMAT's weight in the Stephen Mandel portfolio?
AMAT is 5.34% of the Stephen Mandel portfolio and ranks 5th of 34 stocks by weight.
Has Stephen Mandel owned AMAT before?
No. Stephen Mandel has not reported AMAT before in the filings we track, which start with the quarter ended June 30, 2013.
How many other tracked funds hold AMAT?
9 other tracked funds that had filed for 2026 Q2 hold AMAT. One of them opened it this quarter.