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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.
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Warren Buffett, arguably the most celebrated investor of the modern era, is stepping back. As the 96-year-old “Oracle of Omaha” transitions to chairman emeritus, his legendary career concludes just as Americans are gambling at record levels—a speculative culture he has spent decades criticizing.
After leading his financial conglomerate for more than six decades, Warren Buffett is stepping down as Berkshire Hathaway chairman, effective immediately. Buffett has transitioned to the role of chairman emeritus and will remain on the company’s board of directors.
Greg Abel took over as CEO of the $1 trillion organization in early 2026. While Buffett continued to visit the office daily, he indicated he is now ready for a slower pace.
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A total of 22 participants were purposely recruited to provide detailed insights.
Participants broadly accepted the principle that gambling information should be transparent and accessible, but many reported difficulty interpreting or using it effectively in practice.
Technical data such as odds and rules were often obscured by delivery timing that came too late to influence decisions.