Anthropic’s S-1 filing in late October and subsequent investor feedback have become the dominant driver of market-implied odds, with expectations for its November IPO valuation cooling from earlier $2T targets to the $1.25–1.75T range amid broader tech-sector volatility and higher borrowing costs. Explosive revenue growth—Q3 annualized run-rate exceeding $65B and strong enterprise adoption of Claude models—supports the tight clustering around the 1.2–1.8T brackets, yet massive losses exceeding $80B, $500B-plus compute commitments, and analyst skepticism over sustainable margins create uncertainty. Competitive pressure from OpenAI and others, plus upcoming roadshow sessions, remain key swing factors that could shift sentiment toward the higher or lower brackets depending on final pricing and demand.