Robinhood's prediction markets run on Kalshi
Robinhood does not operate a prediction market exchange. When you buy an event contract in the Robinhood app, the order routes to KalshiEX LLC, Kalshi's CFTC-regulated Designated Contract Market. A smaller set of contracts routes to ForecastEx, the Interactive Brokers exchange. Robinhood is the storefront. Kalshi is the venue.
That makes this a different comparison from Kalshi vs Polymarket, where two separate exchanges compete on markets and liquidity. Here the contracts are largely the same. The question is what kind of access you want to them.
Robinhood entered with presidential election contracts in October 2024 and launched its full prediction markets hub on March 17, 2025. It carries economics and sports, with sports contracts unavailable in Maryland, New Jersey, and Nevada. Kalshi's own exchange lists far more: politics, economics, weather, sports, and a long tail of event markets.
Robinhood gives you the simplest possible door. Kalshi direct gives you the exchange itself. The gap between those two doors is the whole comparison.
Fees. Flat and simple against formula and cheap
Robinhood charges $0.01 commission per contract per side, and the exchange adds $0.01 more. Every trade costs $0.02 per contract, at any price (DeFi Rate's fee survey, August 2026).
Kalshi direct prices takers by formula: 0.07 times price times one minus price. That peaks at $0.0175 per contract on a 50 cent contract and falls toward zero at the extremes. A 95 cent contract costs about $0.0033 per contract to take. Makers pay on a coefficient a quarter of that size, capping near $0.0044. Price doubles as probability in these contracts, which is why the fee peaks at the coin flip. The mechanics are in implied probability.
Run the math and Robinhood costs more at every price point for takers, and several times more against maker pricing. On a 95 cent contract, Robinhood's flat 2 cents is six times Kalshi's taker fee.
Cheap access has been Robinhood's brand since commission-free stock trading. On event contracts, the venue undercuts the broker. Kalshi wins the fee column. The full formula, with worked examples, is in Kalshi fees.
The tooling gap is bigger than the fee gap
Robinhood's event contract interface shows you a price and a buy button. No order book. No depth. No volume by price level. No limit orders (DeFi Rate's review, August 2026).
That is a real product decision, and for a casual user it is a defensible one. A first time buyer of a Fed contract does not want an order ladder.
A trader does. Without the book you cannot see where liquidity sits, cannot rest an order inside the spread, and cannot avoid paying the taker price on every entry. You are trading a market you are not allowed to look at.
Kalshi direct restores the book and adds a REST API. In July 2026 Kalshi moved further up the stack with Kalshi Pro, a beta platform for active traders that tracks roughly 2,000 markets with a live trade feed and resting orders (Yahoo Finance, July 13, 2026).
The exchange itself concedes that its default web app was built for browsing. For the full read on the platform, see the Kalshi review.
2026 changes the map. Robinhood is leaving Kalshi
In January 2026 Robinhood acquired MIAXdx, a CFTC-licensed derivatives exchange and clearinghouse, in partnership with Susquehanna International Group. It is rebranding the entity as Rothera Exchange and plans to process its own prediction market trades instead of routing them to Kalshi (Yahoo Finance, July 13, 2026).
The stakes are real on both sides. Robinhood-routed traffic ran near 16 percent of Kalshi's monthly volume, and Kalshi cleared $31.5 billion to $33 billion notional in June 2026 alone.
For a trader the lesson is structural. Prediction markets keep fragmenting into more venues. Kalshi, Polymarket, ForecastEx, and now Rothera. Every new venue splits liquidity a little further, and every split makes trading from inside a single venue's app a little weaker.
That is the map Kairos was built for.
How serious traders trade Kalshi
Kairos is a professional trading terminal for prediction markets. It puts Kalshi, Polymarket, and Predict.fun in one book: sub-second data, a global best bid and best ask across venues, advanced order types, low latency execution.
The Robinhood question resolves itself at that point. Robinhood simplified Kalshi for people who trade twice a year. Kairos does the opposite job. It gives the Kalshi order book institutional grade tooling and puts every other major venue next to it.
Same CFTC-regulated contracts. A terminal built for the people who trade them.
The sports-exchange field widened in June 2026. Novig alternatives and ProphetX alternatives cover the two new CFTC sports exchanges and where their books actually stand. The sportsbook side of the same decision is mapped in Kalshi vs FanDuel.
- Choose Robinhood if you already keep money there and want to place one or two event trades a year with zero learning curve.
- Choose Kalshi direct if you want the order book, limit orders, and the API.
- Choose Kairos if you trade prediction markets seriously and want Kalshi and Polymarket in one terminal with sub-second data.