Prediction Markets Surge on Dec. 19, 2025: Robinhood’s NFL “Combos,” DraftKings’ New Predictions App, Coinbase Lawsuits, and Polymarket’s Latest Turbulence
On Friday, December 19, 2025, the fast-growing world of prediction markets—often framed as “event trading” and sometimes criticized as a backdoor to sports betting—delivered a cluster of developments that show just how quickly the category is moving from crypto niche to mainstream financial battleground. In just 24 hours, headlines ranged from DraftKings launching a standalone prediction-market product, to Coinbase suing three U.S. states over who gets to regulate event contracts, to Polymarket restoring services after a Polygon-related disruption, all while trading apps like Robinhood keep expanding sports-style contracts that look increasingly similar to parlays—only packaged as exchange-traded “yes/no” instruments. Sports Business Journal+3Axios+3Finance Magnates+3