META Stock Rose 35% in a Month, Now Begins to Fall Due To Muse AI

The Nasdaq-listed social media giant META saw an unprecedented surge of 35% in a month, as the launch of Muse, its personalized AI agent, reached the top of the App Store, with more than three million users downloading it. This shifted the company’s perspective from the ‘AI burning-cash laggard’ to a ‘potential monetization leader’. The stock went through the roof, going from a low of $578 to a high of $779 in September 2026.

However, while Muse was the reason for META stock’s rise, it is also the reason for its decline this week. A new report from the Guardian sheds light on how META’s Muse AI gave a user’s home address to a potential buyer on Facebook Marketplace, raising fresh concerns that the app is not safe and leaks personal information of the people listing their items for sale. The AI agent directed the buyer to visit the seller’s house to pick up the item, without the seller even knowing about it.

The report led to META stock falling from a high of $779 to $715 in just two trading sessions. CEO Mark Zuckerberg also lost $11 billion in the last two days, as the equity slid in the charts. The seller was unaware that the Muse AI agent sent his home address to the buyer to pick up the item and complete the transaction. The AI agent initiated the deal by itself, and the market is now worried about Muse’s features.

META Stock Under the Scanner For Privacy and Safety Concerns

Privacy concerns about Muse are keeping investors skeptical about META stock. The Zuckerberg-led company has to close the loop to protect users’ privacy and safety. AI agents cannot close deals on behalf of the seller and must not give out home addresses simply because a buyer messaged them to inquire about a listed product for sale. This could make META stock fall below the $690 mark if the situation is not brought under control.