Polymarket Launches Private-Company Trading; Anthropic, OpenAI Now Tradeable
Polymarket, the prediction market platform, opened trading on private companies including Anthropic and OpenAI, allowing investors to speculate on valuations and exits for AI's most closely-watched startups without direct equity access.
The move brings traditional finance mechanics—bid-ask spreads, price discovery, secondary liquidity—to unlisted AI leadership, creating a new signal layer for investor sentiment on model company trajectories and fundraising timing.