Polymarket launches private company prediction markets with Nasdaq data

Polymarket moved deeper into the financialization of startup speculation on Tuesday, launching prediction markets tied to private company valuations, IPO timing and secondary-market activity. The company said Nasdaq Private Market will be the exclusive resolution data provider for the contracts, giving the markets a formal data backbone as they turn some of Silicon Valley’s most closely watched names into tradable outcomes.

The structure matters. Nasdaq Private Market runs an institutional secondary marketplace for private company shares, and its data product aggregates pricing, ownership and financing intelligence across the private market universe. By plugging that information into prediction markets, Polymarket is not just letting users wager on whether a startup will go public or how it will be valued. It is building a live price on the probability of those events, one that can be traded by retail users and watched by institutional investors as a real-time signal.

Polymarket said the new offering gives retail users exposure to some of the most sought-after private companies while also creating a market-based read on private-company milestones. The company already hosts IPO-related contracts, including questions about whether SpaceX will go public and what its IPO closing market cap might be. That creates a feedback loop in which investor sentiment, startup gossip and hard market data can all feed the same betting screen, blurring the line between information markets and pure speculation.

The timing is notable. Reuters reported on May 15, 2026, that Polymarket and rival Kalshi had seen a surge in suspicious trades this year, a reminder that popularity in prediction markets has arrived alongside sharper scrutiny. In Washington, regulators are paying closer attention to the sector as it grows quickly in 2025 and 2026, especially when contracts begin to resemble wagers on corporate outcomes rather than traditional financial instruments. Polymarket, which has described itself as the world’s largest prediction market, is now extending that model into the private-company world, where valuation gossip is often already treated like a tradable asset.

For startups, the appeal is obvious: more visibility, more attention and another market that can amplify the signal around a fundraise or listing. For everyone else, the risk is equally clear. When IPO timing and private valuations become contracts, the market can start rewarding the most viral narrative rather than the most durable business.