Polymarket launches private company trading so investors can speculate on Anthropic, OpenAI

Polymarket is launching prediction markets (contracts where traders bet on whether specific events will happen) tied to private companies like OpenAI and Anthropic, allowing regular investors to speculate on milestones such as IPO timing and company valuations without actually owning shares. Nasdaq Private Market will provide the data to determine whether these contracts pay out, and for the first time will make valuation data publicly available for free. This addresses a frustration where ordinary investors are typically excluded from investing in private companies that have created enormous value before going public.