A betting exchange is a marketplace where you bet against other bettors instead of a sportsbook, and the exchange earns by matching the two sides rather than by pricing a margin into the odds. In the US that model now comes in two forms: peer-to-peer sports marketplaces like BettorEdge, where you bet in American odds against other people, and federally regulated prediction markets that sell sports event contracts priced in cents. Both remove the house as your opponent.
How a betting exchange works
At a sportsbook, the book writes the line, takes your bet, and pays you out of its own pocket when you win. It protects itself by pricing both sides a little worse than fair, which is the vig, and by limiting customers who win too often. An exchange takes itself out of that fight. One bettor offers a price on a side, another bettor accepts the opposite side at that price, and the exchange holds both stakes until the game settles. The winner is paid from the loser's stake. The operator makes money from a commission or fee for running the market, so it does not care which side wins.
So prices come from supply and demand, you can post your own number, and a bettor who wins consistently is a good customer rather than a risk to limit. The trade-off is liquidity: your bet only fills when another person wants the other side at your price.
Read the line, then beat it.
Once you can read a price you can spot a bad one. BettorEdge shows real peer-to-peer odds, and they are often better than the book you would get stuck with.
One bet, sportsbook vs exchange
Take a game where a sportsbook hangs both sides at -110. To win $100, you risk $110. That price implies 52.38% (110 divided by 210), so you have to win 52.38% of the time just to break even. Add both sides together and you get 104.76%, and the 4.76% above 100 is the house margin. You can check any two-sided price this way with the no-vig calculator.
On an exchange, two bettors who think the game is a coin flip can meet at even money. You take one side at +100, risking $100 to win $100, and another bettor takes the other side on the same terms. Your break-even drops to 50.00%, both sides add up to exactly 100.00%, and any fee the exchange charges is shown separately instead of being baked into the price.
The gold sliver is the 4.76% house margin. On the exchange it is gone, and any fee is charged separately.
About 2.4 points of break-even sounds small on one bet. Across a season it separates needing to be right 52.38% of the time from needing to be right half the time.
Who runs a betting exchange in the US
The US field changed more in 2026 than in any year before it. Several operators that ran sweepstakes models moved to federal regulation, and one of the original exchanges left sports betting altogether. Here is where each one stands as of September 2026.
1. BettorEdge
BettorEdge is a peer-to-peer sports betting marketplace: you bet against other real people in American odds, set your own line if you want, and there is no house on the other side. It is legal across 45+ states with ID verification built in, and it has matched over $100M in bets across 35,000+ bettors. On top of the market sit the social pieces, like competitions, leaderboards and group chats. See the full list on the features page.
2. Novig
Novig started as a peer-to-peer sports app on a sweepstakes coin model. The CFTC approved its exchange, Ludlow Exchange, as a designated contract market in June 2026, and Novig relaunched on August 4, 2026 as a federally regulated sports prediction market, retiring the sweepstakes coins. It is now an exchange for sports event contracts rather than a sweepstakes app.
3. ProphetX
ProphetX also began on a sweepstakes model. In June 2026 the CFTC approved it as both a designated contract market and a derivatives clearing organization, and it launched as a sports-focused prediction market that month, retiring the sweepstakes version. It is reported as available in every state except Nevada.
4. Kalshi
Kalshi is a CFTC-regulated exchange for event contracts across many topics, sports included. Contracts are priced in cents and pay $1 if the outcome happens. Its sports contracts are the subject of ongoing litigation, it is not available in Nevada, and a court order has required it to block sports contracts in Michigan.
5. Polymarket
Polymarket runs a CFTC-regulated US app, separate from its global crypto platform. The US app opened to all US users in May 2026 and launched with sports event contracts first.
6. Sporttrade
Sporttrade was one of the first state-licensed sports betting exchanges in the US. It closed its sports betting exchange in May and June 2026, shutting down in New Jersey on May 25 and in Arizona, Colorado, Iowa and Virginia in June, and it has applied to the CFTC to return as a prediction market. As of this writing it does not offer sports betting. For side-by-side breakdowns of these and other options, see the BettorEdge comparisons.
How to pick the best betting exchange
The best betting exchange is the one where your bet actually fills at a fair price. Check three things: whether the markets you bet have enough people on the other side, whether prices are quoted in a format you can read quickly (American odds or cents per contract), and whether it is available where you live. If you want a deeper walkthrough of the model itself, our guide to peer-to-peer betting covers it.
Betting exchange FAQ
What is a betting exchange?
A betting exchange is a marketplace where bettors wager against each other instead of against a sportsbook, with the exchange matching the two sides and holding both stakes until the event settles. Because the operator earns a fee for running the market rather than profiting when you lose, there is no house margin built into the odds, and prices are set by supply and demand.
Are betting exchanges legal in the US?
Yes, betting exchanges operate legally in the US in two forms: peer-to-peer sports marketplaces such as BettorEdge, legal across 45+ states, and CFTC-regulated prediction markets such as Kalshi, Novig and ProphetX that sell sports event contracts. Availability still varies by state, and some states, including Nevada, restrict prediction market sports contracts.
What is the best betting exchange in the US?
The best betting exchange in the US is the one with enough liquidity in the markets you bet, fair pricing and availability in your state, and BettorEdge fits that for sports bettors who want American odds and a peer-to-peer market with over $100M matched across 35,000+ bettors. Prediction markets like Novig, ProphetX and Kalshi suit bettors comfortable trading contracts priced in cents.
The whole point of an exchange is the price: the house margin comes out and the number reflects what real bettors think. On BettorEdge community odds you bet against other people at a number you can set yourself. Open BettorEdge and get this price for real, peer-to-peer.
Read the line, then beat it.
Once you can read a price you can spot a bad one. BettorEdge shows real peer-to-peer odds, and they are often better than the book you would get stuck with.