Robinhood Drives Half of Kalshi Trading

Diving deeper into

Underdog Fantasy

Company Report
Robinhood drove roughly half of Kalshi’s Q3 trading.
Analyzed 9 sources

This shows Kalshi is turning into infrastructure, not just a destination app. When one broker can contribute about half of exchange activity, the scarce asset is no longer just contracts, it is distribution. Robinhood puts sports event contracts in front of a huge base of retail traders inside an app they already use for stocks and crypto, while Kalshi supplies the regulated exchange, order book, and settlement layer underneath.

  • The partnership follows the same pattern as exchanges in equities and crypto, where the venue that owns liquidity can let brokers own the customer relationship. Internal research on adjacent markets describes Kalshi and Robinhood as the clearest example of this playbook, with brokerage distribution feeding volume back into the exchange.
  • Sports is where this matters most. Research across the category shows sports now makes up most prediction market usage, and Robinhood has expanded from March 2025 launch contracts into NFL and college football. That matters because sports creates repeat weekly trading instead of one off election spikes.
  • For Underdog, the threat is not only another place to bet on games. It is a lower friction funnel into the same habit loop. Robinhood can turn a stock and crypto user into a sports trader with one wallet and one app, which is the same bundling logic fantasy operators use to move users into higher value products.

The next step is prediction markets spreading through more broker and sportsbook front ends while exchanges compete to be the back end utility. If Kalshi keeps winning distribution deals and adds sportsbook style formats like custom combos, regulated event contracts will look less like a niche financial product and more like a nationwide sports trading rail.