The Motley Fool has advised investors not to buy pre-IPO Anthropic shares or synthetic derivatives until the company makes its financial details publicly available. The guidance comes as interest grows in Anthropic, the developer of Claude, amid preparations for a potential public listing. Anthropic is currently valued at $965 billion after a Series H funding round, placing it among the most highly valued private AI firms. Its latest model releases, including Claude Opus 5.5, have kept attention focused on the company as it competes with OpenAI. Market sentiment around a possible IPO appears uncertain, with market-cap predictions declining and several prediction-market sub-markets showing higher YES odds for a valuation below $1.25 trillion. Investors are watching for IPO pricing, changes to financial disclosures, underwriter guidance, major revenue disclosures, regulatory interactions and shifts in the broader AI market, all of which could affect perceptions of Anthropic's listing and subsequent market-cap forecasts.