Anthropic’s public S-1 filing on October 26 and reports of a roadshow starting the week of November 9 have solidified trader consensus around a November 2026 debut, reflected in the dominant 81.8% implied probability. The company behind the Claude large language model has disclosed explosive revenue growth alongside steep losses and over $500 billion in compute commitments, positioning the IPO as a key test of AI sector appetite amid competition from OpenAI and others. Market-implied odds favor completion before Thanksgiving, consistent with historical timelines from confidential filing to listing and the absence of major regulatory or market disruptions. Potential catalysts include final pricing and Nasdaq trading under ticker ANT, while any valuation shortfalls or broader AI funding pullback could still shift timing into December.