Meta Muse AI Agent Surges in Popularity, Adds $192 Billion in Market Cap and Lifts Nasdaq to Record

Meta Platforms gained roughly $192 billion in market capitalization on Monday after its new personal AI agent, Muse, drew widespread consumer enthusiasm and soaring download numbers. Meta shares rose about 11 percent on the day, helping drive the Nasdaq to a new record close of 30,618, and lifting the broader group of Magnificent 7 stocks. Analysts at Investor's Business Daily noted at least one price target hike on Meta stock, with the analyst saying Muse "flips the narrative" on concerns about Meta's AI returns. UBS analysts said consumer agentic AI "may power the next phase of the AI trade," putting consumers back at the center of the AI story after months of focus on infrastructure spending.

The centerpiece of the day's news was a partnership between Meta and Shopify, announced by Shopify CEO Tobias Lutke, allowing Muse to browse Shopify-powered stores and complete purchases on behalf of users through Shop Pay, Shopify's one-tap checkout service. Shopify shares surged more than 5 percent in premarket trading and ended the day up roughly 7 percent. The deal positions Shopify as the primary commerce partner for Muse's agentic checkout capability, with Shopify's head of payments saying agentic commerce "excites" the company because agents face fewer friction points than human shoppers.

Not every retailer welcomed Muse. Amazon blocked the agent from its retail site after Meta declined to remove the bot, citing concerns that Muse bypasses Amazon's personalization features, appears to capture and store customer credentials, and scrapes account data. The conflict highlights a broader fight over who controls customer accounts in the AI agent era.

Reuters reported that Meta is separately testing a "human concierge" feature within Muse, adding a layer of live human assistance to the AI agent experience. The chip sector also rallied on Muse's momentum, with AMD joining the trillion-dollar market cap club and shares of ARM and Intel rising alongside AMD on bets that mass consumer AI agent adoption will drive fresh semiconductor demand.