Kalshi partners with Interactive Brokers and dxFeed to expand event contract distribution
Kalshi announced on May 14, 2026 a partnership with Interactive Brokers, one of the world's largest brokers, to offer event contracts to the broker's client base of casual, sophisticated, and institutional investors. The partnership followed a 2021 acquisition offer by Interactive Brokers founder Thomas Peterffy, which co-founders Tarek Mansour and Luana Lopes Lara declined when Kalshi had no users, volume, or name recognition. Separately, dxFeed integrated Kalshi into its Event-Based Contracts Market Data Feed on May 19-20, 2026, giving institutional clients real-time pricing and market data access through the financial data vendor's infrastructure.
Kalshi's dual partnership puts its event contracts inside Interactive Brokers' 2.5 million-account interface and dxFeed's institutional data infrastructure simultaneously. Polymarket and DraftKings must now match that broker-plus-data-vendor distribution stack or cede retail and institutional trader acquisition to Kalshi's integrated model.
Marks Kalshi's second major brokerage integration this month after Clear Street, joining Interactive Brokers' aggregator platform alongside CME Group and ForecastEx to build a three-venue distribution stack that Polymarket and DraftKings have yet to replicate.