Until now, predictwire.io focused on the general-purpose prediction markets: Kalshi, Polymarket, PredictIt, Manifold, Metaculus, Smarkets, Zeitgeist. Those platforms remain the best starting point for readers interested in political markets, crypto, and policy forecasts. But for readers who came here specifically looking for sports-event-contract pricing, we were leaving out the exchanges that handle most of that volume.
That changes today.
What is now covered
- Novig (4.5/5): Licensed US peer-to-peer sports exchange. Founded by Jacob Fortinsky and Kelechi Ukah in 2021, launched to retail in 2023. Flat commission on winnings, no traditional vig, sharp-friendly operation. Operates under state sports betting licenses in a growing list of jurisdictions.
- ProphetX (4.4/5): The longest-running US peer-to-peer sports exchange. Founded in 2021. Broad coverage of major leagues and international soccer, commission-only pricing, no winner limiting. A favorite of sharp US bettors.
- Sporttrade (4.2/5): Stock-exchange-style US sports app. Every outcome priced $0 to $100, Jump Trading liquidity, exceptional in-play UX. Live in Colorado, New Jersey, and Iowa as of 2026. The easiest entry point for users new to exchange-style betting.
- Betfair Exchange (4.7/5): The original sports betting exchange. UK-based, owned by Flutter, 20+ years of operating history. Global scale and the industry reference point for peer-to-peer sports markets. Not available to US residents.
Why these four, and why now
Prediction-market-style pricing for sports has been moving quickly. Kalshi launched federally regulated sports event contracts and posted record volume through early 2026. State-licensed exchanges – Novig, ProphetX, and Sporttrade – kept quietly growing state footprints and matched-volume alongside that. A meaningful share of the sharp US sports-betting money is now flowing through exchanges rather than traditional sportsbooks, because exchange pricing is better and exchange operators do not limit winning accounts.
Readers coming to PredictWire from the “prediction market” side of the Venn diagram deserve a full view of that landscape, including the exchange-style platforms that are not, strictly speaking, federally regulated prediction markets but that mechanically do the same thing. Betfair Exchange is the bookend on the international side and the platform every US exchange operator is reverse-engineering.
How the new pages slot into our existing guides
Our best prediction markets for sports guide has been updated with a full section on the four sports-focused exchanges, plus a comparison of how their legal structure differs from Kalshi’s CFTC-regulated sports contracts. The best prediction markets 2026 hub now lists all four, and the homepage has a dedicated sports-exchange card grid.
Our editorial stance is consistent with everything else on the site: we do not make picks, we do not tell readers which market to trade, and we disclose affiliate relationships on every page. If you sign up for one of these platforms through a PredictWire link we may earn a referral fee, at no cost to you, which funds the independence to keep our rankings honest.
PredictWire Daily covers all of these platforms every morning.
5-minute brief on prediction markets plus sports exchanges. Kalshi, Polymarket, Novig, ProphetX, Sporttrade, Smarkets, and more.
About this article: Written and reviewed by The PredictWire Research Team under our Editorial Standards. Platform rankings follow our public Methodology. Prediction market contracts carry risk of total loss. Nothing here is financial advice. Corrections: corrections@predictwire.io.
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