21+ in most US states. Gambling and event trading involve risk of loss. Play responsibly.
Trade on real-world outcomes: politics, sports, economics and pop culture. Compare the leading event contract platforms, fee structures and legal statuses.
Editorial comparison only. Play Radar may earn a commission when affiliate partnerships go live. Last reviewed 8 October 2026.
Featured platforms
Ranked on regulation, liquidity and total cost of trading. Editorial links only until partner offers are connected.
Offer terms, eligibility and promotional values are provided or published by the advertiser and may change without notice. Verify the current offer and location rules with the operator before registering. Play Radar may earn commission from certain links. How our links work.
Welcome offer
readers comparing US event contracts
US product only. Account approval, physical location and individual contract restrictions still apply. This review does not establish eligibility in every US state. Do not use the international product as a workaround for US restrictions.
Welcome offer
sports fans comparing Prediction Picks
Prediction Picks require age 18+ and physical presence in an eligible state, according to Underdog. The current published list omits Arizona, Michigan, Nevada and New York. Other Underdog products have different access rules; verify the live state list before trading.
Welcome offer
researching a developing prediction offering
US campaign. The operator’s live banner advertises Predictions in CA, NJ, CO, LA, IN, WV, ID, ME and AL. Verify current onboarding restrictions. The social gaming state list is not a prediction-account list. Do not transfer sweepstakes rules or promotions to an event-contract account.
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Guide
Event contracts price probability through an order book. Sportsbooks sell you a fixed price with a margin baked in. That single difference changes fees, market range and how you exit a position.
Prediction markets
Dynamic pricing driven by peer-to-peer liquidity ($0.01 to $0.99 contracts)
Sportsbooks
Bookmaker sets the line and takes a house cut (vig or juice)
Prediction markets
Politics, economics, Fed rates, box office, weather, sports
Sportsbooks
Purely athletic events and standard prop bets
Prediction markets
An early sale may be possible when trading is open and a counterparty is available
Sportsbooks
Most bets must ride until the final outcome
Prediction markets
Regulated by the CFTC for US exchange platforms
Sportsbooks
State gaming boards and casino commissions
Comparing the sportsbook side too? See our sportsbook rankings or read how we rate every platform.
Questions
The legality, pricing and tax questions readers ask us most about event contracts.
Public-source research, platform screenshots and product-specific restrictions. Inclusion does not establish availability in your location.
Disclaimer: Prediction market trading involves risk. Content on this page is for informational and educational purposes only and does not constitute financial, investment or legal advice. Ensure you comply with local regulations before participating. 18+ only, 21+ in the US.