Why Muse really just added billions to Meta's market cap and to Mark Zuckerberg's net worth — Live Feedhttps://www.live-feeds.com/feed/why-muse-really-just-added-billions-to-meta-s-market-cap-and-to-mark-zuckerberg-s-net-worthContinuously updated, source-cited coverage. Meta Stock Surges 11% as Muse AI Agent Tops App Chartshttps://www.live-feeds.com/feed/why-muse-really-just-added-billions-to-meta-s-market-cap-and-to-mark-zuckerberg-s-net-worthhttps://www.live-feeds.com/feed/why-muse-really-just-added-billions-to-meta-s-market-cap-and-to-mark-zuckerberg-s-net-worth#u81889Wed, 23 Sep 2026 22:35:08 +0000Meta Platforms shares rose 11% on Monday following the rapid adoption of its Muse AI agent, which became the top free app on both Apple and Google app stores. The surge in popularity contributed $25 billion to Mark Zuckerberg's net worth in a single day. Muse has surpassed 2.5 million downloads, marking the fastest adoption rate since ChatGPT. While the agent has driven significant market cap growth, some analysts note that Meta's AI tools have yet to generate meaningful revenue.Why it mattersThe launch of Muse comes ahead of a keynote address by Mark Zuckerberg at a developers confe