NYSE owner doubles down on Polymarket with fresh $600 million investment

Intercontinental Exchange (ICE), the parent company of the New York Stock Exchange (NYSE), said it added another $600 million to its investment in prediction market platform Polymarket, closing out a previously announced funding agreement between the two firms.

The new capital comes on top of a $1 billion investment ICE made in October. ICE also plans to buy up to $40 million in additional shares from existing holders, bringing its total commitment close to $2 billion. The company said the investment will not materially affect its financial results.

Polymarket runs a marketplace where users trade on the outcome of real-world events, from elections to economic data releases. A trader, for example, might buy shares that pay out if inflation rises above a specified level. Prices shift in real time, reflecting crowd expectations.

The backing from ICE gives Polymarket more than capital. It ties the platform to one of the upcoming names in global markets. Rival platform Kalshi recently raised more than $1 billion at a $22 billion valuation, roughly double its previous mark. The company is already generating an estimated $1.5 billion in annual revenue, highlighting strong demand for event-based trading.

Investor interest has grown even as lawmakers question whether prediction markets are vulnerable to manipulation or insider activity. These concerns could shape how regulators treat both Polymarket and its peers in the coming years.

Polymarket has taken steps to position itself for that scrutiny. It acquired a licensed exchange and clearinghouse earlier this year while expanding its political and financial ties. It also recently announced a partnership with Palantir and TWG AI to build a surveillance system aimed at detecting suspicious trading and manipulation in its sports prediction markets.

ICE’s investment signals that large, traditional market operators see potential in the sector. If prediction markets gain broader approval, they could sit alongside stocks and futures as another way for traders to express views on the forthcoming events.