The board is real brands only. No composites. They sit on three platform types: regulated, research, and state-licensed. Mash them into “prediction apps” and the state map stops making sense. So do the fees.
Standalone exchanges — Kalshi and Polymarket US
Kalshi is a CFTC-registered U.S. event-contract exchange. Dollars in, dollars out. Cents on the screen. Not a wallet. Whether you get in still depends on the state and the contract. We list it. We don’t open the account.
Polymarket US is the U.S. app. QCX LLC, doing business as Polymarket US, was designated a CFTC contract market on July 9, 2025, and trading is in U.S. dollars. Polymarket’s international crypto site is a separate product.
Brokerage tab — Robinhood
Robinhood offers event contracts through other CFTC-registered exchanges. Where they show up, the quote is usually the same $0–$1 band. Being able to buy a stock is not the same as being able to buy a contract.
Sports-branded verticals — FanDuel Predicts and DraftKings Predictions
Two sports brands. Two prediction products. Two launch maps. Closest pair on the board, and still not the sportsbook. When they quote cents, read cents. We won’t paste an odds boost onto these pages.
Same family, different door — Crypto.com, OG.com and Fanatics Markets
Crypto.com’s prediction contracts are offered by CDNA, a CFTC-designated contract market. OG.com is Crypto.com’s dedicated prediction-market brand, described on its own homepage as NADEX / CDNA event contracts. Fanatics Markets offers CDNA contracts through a Fanatics futures commission merchant. Same platform type. Different doors. Different screens. Underdog, on this snapshot, says it operates its own exchange.
Research and state-licensed
PredictIt is on a research / no-action platform type. Sporttrade stopped taking bets on May 25, 2026, and is not currently operating. Novig and ProphetX sit on the board as regulated listings with their own screens. Don’t copy a Kalshi habit onto any of them.
What they share
A cents format, and a need for a resolution rule. Not a fee card. Not a partnership with us.