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Before Patrick Mahomes laced up his cleats for his 2026-2027 NFL regular-season debut, US prediction markets had already cleared a historic benchmark for the opening week of the season.
Two operators alone – Kalshi and Polymarket – topped the combined $1 billion mark in NFL trading activity over the first six days of Week 1, according to numerous measures this week. During the period, Kalshi recorded NFL volume of $983.4 million, according to DeFi Rate, earning the pole position by a large margin. Mahomes and the Kansas City Chiefs thrashed the Denver Broncos 31-10 on Monday Night Football, capping the largest week for prediction markets ever.
Even before the primetime matchup in Kansas City, it became abundantly clear that the industry would shatter previous marks for weekly activity. The AFC West showdown bolstered the already robust totals. Overall, volume for the week hit a record $15.9 billion, according to Bank of America, up 16% from a week earlier.
How to play Hearthstone
Merging Marlins and rewarding Free Spins build momentum throughout the game, creating opportunities for bigger wins.
About Hearthstone
This followed a period of restrategising for the operator, after rebranding from GVC Holdings and committing to having 100% of its revenues come from regulated markets.
But its share price has taken a tumble over the last year, dropping up to 37% since September 2025. Its market cap currently sits at £3.39 billion.
The operator first started trading on LSEG’s main market in February 2016 under its previous company name GVC Holdings. This followed its delisting from the Alternative Investment Market (AIM exchange).
