Billionaire Stephen Mandel Dumped His Fund's Entire Stake in Meta Platforms -- Meaning This AI Stock Is Lone Pine's New No. 1 Holding
The Motley Fool
by newsfeedback@fool.com (Sean Williams)February 26, 2026
AI-Generated Deep Dive Summary
Billionaire investor Stephen Mandel of Lone Pine Capital made a significant shift in his portfolio, completely eliminating his stake in Meta Platforms (META) during the fourth quarter. This move marked the end of Meta's reign as one of his top holdings. Instead, an industry-leading artificial intelligence (AI) stock has now taken its place as his No. 1 holding. This change reflects Mandel's strategic focus on AI infrastructure, a sector he sees as critical to future growth.
The timing of this portfolio adjustment was notable, as it coincided with the Feb. 17 deadline for institutional investors managing at least $100 million in assets to file their Form 13F with regulators. These filings provide insight into the buys and sells made by Wall Street's most sophisticated money managers. Mandel's decision to ditch Meta entirely was unexpected, as he had previously held a significant stake in the social media giant. However, his new focus on an AI stock suggests a strategic pivot toward companies that play a key role in the AI supply chain.
The AI company now at the
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Originally published on The Motley Fool on 2/26/2026