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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.
About Gigantoonz
His appointment signals a continuation of UK influence within GREF, even as the Gambling Commission undergoes personnel changes. Ruth Evans was named the new Gambling Commission chair, taking over from Charles Counsell after over a year in the position.
In addition, Olivia Petit has been appointed as board secretary of GREF. Petit is an associate professor at KEDGE Business School, where her research specialises in consumer behaviour in digital environments and emerging technologies.
Kathryn covers bitesize breaking news with a primary focus on EMEA and US legislation. A proud North Walian, fluent Welsh speaker and lifelong Wrexham FC fan – long before Hollywood came calling.
About Gigantoonz
Top non-lottery activities during the period included scratchcards (13%), betting (10%) and online instant win games (8%).
Betting skewed male, with 16% of men gambling on betting compared to 4% of women. Age-wise, overall gambling participation peaked among 45- to 64-year-olds (56%-59%), when excluding lotteries the highest participation was among 35- to 44-year-olds (35%).
Respondents cited motivations predominantly as seeking large winnings and entertainment, while 42% reported positive feelings about their most recent gambling expenditure.
