Anthropic’s late-October S-1 filing and reported target for a Nasdaq listing under ticker ANT in the week of November 16 have anchored trader sentiment around mid-to-late November dates. Explosive first-half 2026 revenue of $16.3 billion and the first quarterly operating profit contrast with an $80.7 billion net loss, while expected proceeds of up to $100 billion at a $1.5–2 trillion valuation underscore the scale. With implied probabilities for November 18–20 clustered within a few points and “no IPO by November 30” nearly as likely, the tight spread reflects uncertainty over the precise roadshow start after the November 3 midterms, book-building pace, and pre-Thanksgiving constraints. Market-implied odds aggregate capital-at-risk views on these execution variables.