
Kalshi set daily records of $2.426 billion on Saturday and $2.433 billion on Sunday in NFL Week 1. Combined sector volume reached $14.10 billion for the week, up 9.3%. NFL, combo contracts and platform milestones drove the activity.
SCCG Take — Kalshi’s lower vig on standard bets versus DraftKings and FanDuel shows pricing pressure in prediction markets. Sustained volume growth requires operators to track allocation effects.
Kalshi recorded consecutive daily volume records during the opening week of the 2026 NFL season. The platform posted $2.426 billion in total volume on Saturday before reaching $2.433 billion on Sunday. Multi-leg contracts contributed heavily while football generated hundreds of millions in additional activity.
The sector experienced broad gains in the week of September 7-13. Combined contract volume across Kalshi and Polymarket Global reached $14.10 billion, up 9.3% from $12.90 billion the prior week. Kalshi accounted for $12.98 billion, or 92.1% of the total.
NFL trading on Kalshi exceeded $617 million from the Wednesday opener through Sunday. The exchange recorded $388.1 million in NFL volume on Sunday excluding combos, or 76% of the $510.9 million across seven operators. Straight football contracts produced $328.7 million on Saturday and $409.9 million on Sunday. Multi-leg contracts added approximately $1.47 billion on Saturday and $1.48 billion on Sunday.
Combo markets represented more than half of Kalshi activity on the record days. Weekly non-additive combo volume rose 11.1% to $1.93 billion. Kalshi generated fees near prior highs with $15.99 million on Saturday and $16.02 million on Sunday.
Weekly volume rose from $8.069 billion for the week ending August 9 to $12.983 billion for the week ending September 13, an increase of 60.9%. Month-to-date volume through September 13 reached $23.45 billion, 53.4% above the comparable August figure. Sports volume across Kalshi and Polymarket Global totaled $3.76 billion, with Kalshi at $3.265 billion and Polymarket Global up 104.7% to $498.81 million.
Competing platforms set records. DraftKings Predictions reached $139.8 million on Sunday after first exceeding $100 million on Saturday. Crypto.com exceeded $100 million for the first time on Sunday. As reported by World Casino News, Citizens analysts found Kalshi offered 3% lower implied vig than FanDuel and 4% lower than DraftKings on standard Week 1 bets.
Reporting: World Casino News
Generated by SCCG’s automated editorial system from published source reporting. SCCG Management holds editorial responsibility.
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