Polymarket, the $9 billion prediction market platform, has acquired Dome, a Y Combinator-backed startup that provides a unified API for developers to build across multiple prediction market platforms. The acquisition was confirmed by both companies in a Feb. 19 post on X, though financial terms were not disclosed.
Dome, part of Y Combinator's Fall 2025 cohort, has developed a single integration layer that allows developers to access live and historical data from various prediction markets. "Dome makes it simple to trade, embed market data into products, and deploy strategies across multiple platforms through one interface," according to Y Combinator's description.
The startup had raised $500,000 from Y Combinator and secured an additional $4.7 million in seed funding. Dome's co-founders, Kunal Roy and Kurush Dubash, previously served as founding engineers at Alchemy, bringing expertise in scalability and user experience to Polymarket.
"We're obsessed with prediction markets and want to have the biggest impact in the space. There's no better place to do that than Polymarket," Dubash wrote on X following the announcement.
This marks Polymarket's first official acquisition focused on developer infrastructure, following its earlier acquisition of QCEX, a derivatives exchange and clearinghouse licensed by the U.S. Commodity Futures Trading Commission. The Dome team will now provide the necessary infrastructure for Polymarket to become the base layer for external applications and data services.
Investors expect this technology to accelerate Polymarket's distribution deals with sports organizations like Major League Soccer (MLS) and the National Hockey League (NHL). The market is also watching to see if this move precedes a new funding round at a higher valuation, reinforcing Polymarket's recent reentry into the United States market.
Since being greenlighted by the CFTC to operate an intermediated trading platform, Polymarket has secured multiple major partnerships with media brands like Yahoo Finance and Google Finance, alongside sports organizations. Last month, the company partnered with Parcl to launch a prediction market tied to real estate trends.
Polymarket has also expanded onto the Solana blockchain through an integration with Jupiter and was recently added to the MetaMask mobile app, widening its retail distribution.
