Polymarket is growing its sports betting platform with the addition of parlays.
The prediction market platform has filed with regulator the Commodity Futures Trading Commission (CFTC) to list “combinatorial outcome contracts” that are basically parlays.
In sports betting, parlays are a single bet that combines two or more individual wagers together. To win a parlay, every single bet must be correct.
If one bet loses, the entire parlay loses. But if all bets succeed, people get a much bigger payout than if they had placed the bets separately.
In its regulatory filing, Polymarket says that is not so much asking permission to list parlay contracts as it is informing the CFTC that it intends to do so.
The parlays are expected to become available on Polymarket’s sports betting platform today (May 21).
Sports betting is popular on prediction market platforms such as Polymarket and Kalshi.
Polymarket has said that sports betting represents 63% of all trades on its platform and that it is a majority portion of its daily trading volumes.
Sports betting in the U.S. has exploded in recent years as more states legalize the practice. In 2025, Americans legally wagered a record $166.94 billion U.S. on sports.
Polymarket is privately held and its stock doesn’t trade on a public exchange.
