Kalshi cofounder Tarek Mansour discussed the evolution and challenges of prediction markets, particularly their sports event contracts, during an interview at Kalshi’s New York City headquarters. Launched in January 2025, Kalshi’s sports event contracts have been a significant area of trading volume, though their share recently declined from over 90% to about 53%. Mansour emphasized that Kalshi’s focus is on what consumers want, advocating for responsible, regulated innovation to meet demand rather than simply responding to controversy or opposition. His company also supports strong regulatory measures such as banning minors and curbing insider trading to protect market integrity.

Mansour confronted criticism from industry figures, including attacks from the DraftKings cofounder, by framing it as a mix of valid regulatory concerns and typical business competition resistance. He likened the situation to the disruption Uber caused to taxis, highlighting that traditional sportsbooks operate on high margins and often limit winning players, whereas prediction markets operate with slimmer margins and empower users to win. Mansour stressed that Kalshi maintains rigorous pre- and post-trade surveillance, including banning insiders like members of Congress and athletes from trading on related markets, to enhance trust and fairness.

Looking ahead, Mansour expressed confidence in the legal protections under federal preemption that support Kalshi’s operations despite ongoing debates, including a potential Supreme Court case on sports event contracts. He believes a ruling that forces state-by-state regulation could disrupt markets regulated by the CFTC and SEC, but Kalshi will continue focusing on product growth and consumer experience. Mansour also revealed that Donald Trump Jr. serves as an advisor, primarily to help Kalshi gain access to policymakers and engage in regulatory discussions, while remaining distanced from regulatory affairs themselves.

Highlighting Kalshi’s growing industry footprint, Mansour spoke about their relationships with notable athletes like Giannis Antetokounmpo, who became an investor after expressing enthusiasm for prediction markets, and investor Kyle Kuzma. Leagues such as the NHL have begun partnering with Kalshi and Polymarket, and talks with the NBA are ongoing. Mansour noted leagues’ interest in prediction markets stems from both integrity concerns and fan engagement opportunities. He welcomed recent CFTC proposed rules aimed at improving market oversight and expects federal regulation to better address problematic markets, such as those tied to commentary on violence or terrorism, which could help counter offshore competitors offering less regulated products.