Polymarket traders see 32% chance Anthropic leads 2026 IPOs

Odds that Anthropic tops SpaceX for the year's biggest listing fell from about 46% to 31.7% in a week A week ago, Polymarket traders thought Anthropic had close to a coin flip’s chance of pulling off 2026’s largest IPO. That optimism has cooled. The AI company’s odds of claiming the title now sit at 31.7% , down from about 46% one week earlier. Traders are increasingly betting that SpaceX, which already went public this year, will keep the crown. The Polymarket contract asks a simple question: which company will have the largest IPO by market cap in 2026?