ICE invests $600 million in Polymarket amid intensified state scrutiny

Intercontinental Exchange, the parent of the New York Stock Exchange, on March 27 completed a $600 million direct cash investment in prediction market operator Polymarket and plans to buy up to $40 million of additional securities from existing holders.

The funding advances a commitment announced in October 2025 to invest up to $2 billion in Polymarket. ICE did not disclose the valuation or other terms of the new capital.

The secondary purchase would come from current Polymarket shareholders, increasing ICE’s stake through both primary funding and a buy from existing investors. No timetable was provided for the secondary purchase, and the company did not detail governance rights tied to its position.

The deal expands ICE’s exposure to prediction markets, trading venues where participants buy and sell contracts tied to outcomes of future events.

Regulatory pressure on the sector has intensified. Authorities in at least 11 states have pursued actions involving platforms, including Polymarket and Kalshi. Nevada issued a temporary ban on Kalshi, and Arizona filed criminal charges alleging the platform operated an illegal gambling business. Other states have issued cease-and-desist letters or are considering new rules.

Polymarket recently updated its insider trading rules to explicitly prohibit transactions based on confidential information. Lawmakers and critics have raised the risk of insider-style activity around politics, sports and geopolitics.

Aishwary Gupta, global head of business at Polygon Labs: “Intercontinental Exchange’s investment in Polymarket highlights the growing institutional interest in onchain market platforms.” He added that Polymarket’s growth on Polygon demonstrates the use of blockchain infrastructure for high-frequency, real-time market activity.

ICE did not address how state actions may affect Polymarket’s operations or its own investment plans. In recent years, the company has broadened its business beyond equities and derivatives into data services and other transaction-based lines.

Polymarket runs its markets on blockchain networks, with trading and settlement designed to occur on decentralized systems. Its growth has coincided with increased oversight by state and federal authorities assessing whether such venues fall under gambling, commodities or securities rules. If you are wondering is Polymarket legit in 2026, check out our review of its standing.

ICE and Polymarket did not outline how the new proceeds will be used. No timetable was provided for any further tranches from the October 2025 commitment.