Meta Platforms shares, trading near $728 in early October 2026 after a 25%+ September rally, reflect strong trader focus on AI monetization momentum from the early-September launch of the Muse personal AI agent, which quickly led iOS download charts and shifted narratives around practical large language model applications. This has lifted ad revenue growth expectations through tools like Advantage+ while competitive positioning improves versus OpenAI and Google. However, elevated 2026 capex guidance of $130-145 billion continues to compress free cash flow and margins, creating volatility ahead of the October 28 earnings report that will test early Muse adoption metrics and enterprise platform traction. Traders are weighing these catalysts against typical seasonal patterns and any last-minute regulatory or macroeconomic shifts.