Lynnae Williams Journalist
Lynnae is a journalist covering the intersection of technology, culture, and gambling. She has more than five years of experience as a writer and editor, with bylines at SlashGear and MakeUseOf. On the iGaming side,...
Read Full BioOn-chain prediction market giant Polymarket announced yesterday that it had acquired Dome, a Y Combinator–backed startup that specializes in developer infrastructure for prediction markets.
Dome co-founder Kurush Dubash confirmed the acquisition in a LinkedIn post. Polymarket made a separate announcement on X, welcoming Dome’s team and technology. The deal is the second major acquisition for Polymarket as it strives to maintain its lead in the quickly growing sector.
While the companies didn’t disclose the financial terms of the deal, Dome, a graduate of Y Combinator’s Fall 2025 cohort, previously raised approximately $5.2 million in funding.
By acquiring Dome, Polymarket seeks to streamline the developer experience, making it easier for third-party creators to build trading bots, analytics dashboards, and embedded widgets that pull data across fragmented platforms.
Acquisition Targets Infrastructure Behind Prediction Markets
With its acquisition of Dome, Polymarket is making a strategic play for technical infrastructure. What Dome does is provide Polymarket with a unified API, basically a universal remote that allows developers to access data from different platforms using a single piece of code.
Before the deal, Dome’s technology normalized data from both Polymarket and its primary regulated rival, Kalshi. Polymarket is now integrating this technology into its own stack, giving it control over the primary gateway developers use to access and aggregate real-time data across competing prediction platforms.
“We’re excited to bring our focus on speed, reliability, and dev experience to the world’s largest prediction market,” Dubash said on LinkedIn. Dubash and his co-founder, Kunal Roy, both founding engineers at the blockchain giant Alchemy, have a long history with Polymarket, including building the custom infrastructure to help the platform scale during high-volume periods.
Pattern of Strategic Expansion
The Dome deal is Polymarket’s second public acquisition, following its $112 million purchase of the U.S.-regulated derivatives exchange QCEX in July 2025. That deal was an important part of the prediction market’s re-entry into the United States under a fully compliant network.
As Polymarket Founder and CEO Shayne Coplan said at the time, “Demand is greater than ever — not just in user growth and trading volume, but in how mainstream audiences are turning to Polymarket to separate signal from noise, bias, and speculation. Now, with the acquisition of QCEX, we are laying the foundation to bring Polymarket home — re-entering the US as a fully regulated and compliant platform that will allow Americans to trade their opinions.”
Since its return to the U.S., the company has also set its sights on sports leagues, already closing deals with Major League Soccer and the National Hockey League. According to a report from PM Insights, Polymarket is valued at $11.6 billion on the secondary market and continues to dominate decentralized prediction activity, holding over 70% of the market share.
Competition Heats Up for Institutional Access
Polymarket’s Dome acquisition comes as prediction markets increase competition for the institutional “trading stack.” On the same day as the Dome announcement, Tradeweb and Kalshi announced they have partnered to integrate prediction market data directly into Tradeweb’s global electronic trading platform.
As the prediction market continues to mature, the battle lines appear to be shifting from liquidity to infrastructure and connectivity. Polymarket’s acquisition of a tool that unifies industry data helps position it as the primary gateway for the next wave of developers and institutional participants entering the prediction market space.
