Anthropic's push toward a November 2026 IPO, with a pre-IPO investor day underway on October 14 and formal marketing eyed for the week of November 9, centers trader focus on whether closing market cap clears key thresholds near $1.8–2 trillion. Strong Claude model updates including Haiku 5.5, Sonnet 5.5, and Opus 5.5, plus enterprise partnerships, underpin revenue momentum that reached a $65 billion run rate, yet the leaked prospectus highlights a $42 billion 2025 net loss and $518 billion compute commitments that temper multiples. AI safety scrutiny and competition from OpenAI add uncertainty, while Nasdaq listing expectations and index inclusion potential could support demand if third-quarter results hold.