Polymarket is in talks with investors to raise $400 million in funding, valuing the prediction market operator at $15 billion including new money, The Information reported on Sunday, citing two people familiar with the talks.

The funding would add to the $600 million invested by the Intercontinental Exchange in late-March, with the New York Stock Exchange parent having earlier pledged to invest up to $2 billion in Polymarket. 

The prediction market operator is looking to add more strategic investors beyond Intercontinental Exchange to the funding round, which could total $1 billion, the Information report said. 

The wave of new funding comes amid the growing popularity of online prediction markets such as Polymarket and rival Kalshi. A report in March put Kalshi’s valuation at $22 billion, roughly twice a late-2025 valuation of $11 billion. 

The two allow users worldwide to wager on a host of outcomes, across sports, entertainment, politics, and more recently, even the U.S.-Israel war on Iran. Prediction markets have become wildly popular among U.S. consumers, with Polymarket seeing daily volumes of about $478 million as of March 2026.