Anthropic filed a Form S-1 with the Securities and Exchange Commission on Monday, taking another step toward going public. Kalshi traders assign a 95% probability that the company will officially announce an IPO by the end of 2026. The filing plans a Nasdaq listing under the ticker ANT, and Anthropic aims to begin trading during the week of November 16, according to The Wall Street Journal. Kalshi puts the odds of trading starting before that date at 14%, while Polymarket gives a 69% chance that Anthropic will list on a public exchange and begin trading by November 20. CNBC disclosed that it has a commercial relationship with Kalshi involving customer acquisition and a minority investment.
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