Trading volume for NFL contracts on Polymarket’s global platform surged by approximately 4,399% week-over-week between September 7 and 13, 2026, reaching $27.62 million. The platform’s US division saw a 1,760% increase, totaling $23.20 million for the same period.
Total sports trading volume on Polymarket Global rose by about 104.7%, hitting $499 million. The combined weekly volume for Polymarket and its US-based competitor Kalshi reached approximately $14.1 billion in September 2026.
Kalshi recorded $983 million in NFL volume during the first week of the 2026 season. Since launching its US operations in late 2025, Polymarket has captured roughly 43.8% of Kalshi’s football trading volume.
College football betting volume reached hundreds of millions in early September 2026. Polymarket experienced temporary platform outages during peak trading times, which impacted its market share.
Polymarket operates a CFTC-regulated US arm established in late 2025. The platform previously used the 2026 World Cup to build momentum before the start of the NFL season.
