Stephen Mandel's prominent hedge fund, Lone Pine Capital, revealed a significant new position in semiconductor equipment manufacturer Applied Materials (AMAT). According to its latest 13F filing, the firm acquired 1.21 million shares valued at approximately $873.19 million as of June 30, 2026. This new holding immediately constitutes a substantial 5.34% of Lone Pine's reported portfolio.

Investors should note that 13F filings are submitted to the SEC up to 45 days after the end of a quarter, reflecting past investment decisions. This particular disclosure, filed on August 14, 2026, details the firm's portfolio as it stood at the end of the second quarter. During that period, Applied Materials reported record quarterly revenue and earnings per share.