Meta Platforms shares face volatility on October 16 amid profit-taking ahead of Q3 earnings on October 21, with the stock trading near $720 after recent gains. The primary driver remains the October 12-13 launch of frontier Muse Wonder and Muse Wonder Full large language models, which deliver state-of-the-art performance on agentic tasks, coding, and memory retention, positioning Meta competitively against OpenAI and Anthropic through open-weight releases like Muse Spark. Heavy AI infrastructure investments, including narrowed 2026 capex guidance of $130-145 billion and analyst forecasts exceeding $200 billion for 2027, raise margin concerns despite ad revenue growth and analyst price target increases. Traders weigh these AI ecosystem gains against pre-earnings caution and regulatory scrutiny over data center tax credits.