Meta's stock rallied sharply on October 12 after the company released its Muse Wonder and Muse Wonder Full frontier large language models, which Zuckerberg described as matching leading rivals in agentic capabilities for tasks like coding and complex reasoning. The announcement highlighted Meta's accelerated AI infrastructure buildout and successful early traction for its Muse personal AI agent, reinforcing trader confidence that heavy capital spending is translating into competitive positioning and potential new monetization. With Q3 earnings scheduled for October 21, sentiment remains tied to whether the post-announcement momentum sustains or faces typical pre-report caution around AI return-on-investment concerns.