NFL Prediction Market Volume Tops $1.035B as Kalshi Reaches $983.36M
NFL prediction market volume reached at least $1.035 billion from Sept. 7-13, with Kalshi accounting for $983.36 million as regular-season trading spread across the Week 1 slate.
Updated Sept. 15, 2026: This article has been updated to include final game-board volume from Monday’s Broncos-Chiefs matchup. Headline weekly totals continue to cover Sept. 7-13.
NFL prediction markets generated at least $1.035 billion in tracked contract volume from Sept. 7-13, up from $72.72 million in our previous weekly volume report.
Kalshi accounted for $983.36 million, including $537.48 million in direct NFL contracts and $445.88 million in NFL-only combo contracts. Polymarket Global added $28.00 million, while Polymarket US had reported $23.20 million across five days when we collected the data.
The volume was not confined to the opening prime-time games. After Monday’s Broncos-Chiefs matchup was finalized, four Week 1 games had generated more than $100 million across the available venues.
Week 1 also provides the first regular-season checkpoint against our projection that Kalshi NFL volume could reach about $57 billion this season.
Our headline weekly reporting window ended at 12:00 a.m. UTC on Sept. 14. The Week 1 game-board figures below were refreshed after Monday’s Broncos-Chiefs matchup, while the headline and venue-wide weekly totals remain limited to Sept. 7-13. Polymarket US game-board volume remains a lower bound because its Sept. 10 Daily Market Report has not posted.
NFL-only combos added $445.9M on Kalshi
Week 1 game markets and game-specific props generated $495.92 million on Kalshi, up from $3.56 million in the prior week. Other direct NFL contracts contributed another $41.55 million, taking direct NFL volume to $537.48 million.
NFL-only combo contracts added $445.88 million, up from $52.25 million a week earlier. Those combos accounted for 45.3% of Kalshi’s NFL volume, with direct NFL contracts making up the remaining 54.7%.
Week 1 NFL Game Markets vs Combos
4,087,331 Game markets 742,422 Combos 4,829,753 Total transactions
| Date (UTC) | Direct NFL volume | NFL-only combo volume | Total NFL volume |
|---|---|---|---|
| Monday, Sept. 7 | $3.7M | $11.7M | $15.4M |
| Tuesday, Sept. 8 | $7.7M | $16.8M | $24.6M |
| Wednesday, Sept. 9 | $30.6M | $40.7M | $71.2M |
| Thursday, Sept. 10 | $112.5M | $51.8M | $164.4M |
| Friday, Sept. 11 | $79.0M | $41.6M | $120.6M |
| Saturday, Sept. 12 | $6.5M | $30.1M | $36.7M |
| Sunday, Sept. 13 | $297.4M | $253.1M | $550.5M |
| TOTAL | $537.5M | $445.9M | $983.4M |
Updated Sep 23, 2026
NFL volume tops $1B across three venues
Kalshi’s NFL volume rose to $983.36 million from $70.85 million the previous week, an increase of $912.51 million, or 1,288%. Polymarket Global reached $28.00 million, up from $626,401.82, while Polymarket US had already reached $23.20 million across five reporting days.
| Venue | Aug. 31-Sept. 6 | Sept. 7-13 | Increase | WoW | Status |
|---|---|---|---|---|---|
| Kalshi | $70.85M | $983.36M | $912.51M | 1,288% | Complete |
| Polymarket Global | $626.40K | $28.00M | $27.38M | 4,371% | Complete |
| Polymarket US | $1.25M | $23.20M | $21.95M | 1,760% | Partial: five daily reports |
| Tracked total | $72.72M | At least $1.035B | At least $961.84M | At least 1,322% | Partial due to Polymarket US |
Four Week 1 games topped $100M
Cowboys-Giants finished as the largest Week 1 matchup with at least $151.83 million across the available venues. Broncos-Chiefs followed at $130.61 million, ahead of 49ers-Rams at $118.61 million and Patriots-Seahawks at $112.42 million.
| # | Game | Date | Kalshi | Poly Global | Poly US* | Total* |
|---|---|---|---|---|---|---|
| 1 | Dallas Cowboys–New York Giants | Sept. 13 | $112.80M | $5.90M | $33.13M | $151.83M |
| 2 | Denver Broncos–Kansas City Chiefs | Sept. 14 | $110.97M | $15.84M | $3.80M | $130.61M |
| 3 | San Francisco 49ers–Los Angeles Rams | Sept. 10 | $96.76M | $5.26M | $16.59M | $118.61M |
| 4 | New England Patriots–Seattle Seahawks | Sept. 9 | $105.48M | $4.73M | $2.21M | $112.42M |
| 5 | Green Bay Packers–Minnesota Vikings | Sept. 13 | $39.61M | $2.25M | $8.96M | $50.81M |
| 6 | Washington Commanders–Philadelphia Eagles | Sept. 13 | $39.51M | $1.83M | $8.79M | $50.14M |
| 7 | Arizona Cardinals–Los Angeles Chargers | Sept. 13 | $33.82M | $1.07M | $7.25M | $42.14M |
| 8 | Buffalo Bills–Houston Texans | Sept. 13 | $34.10M | $2.64M | $399.20K | $37.14M |
| 9 | New Orleans Saints–Detroit Lions | Sept. 13 | $29.52M | $1.65M | $270.90K | $31.44M |
| 10 | Miami Dolphins–Las Vegas Raiders | Sept. 13 | $16.03M | $1.31M | $4.19M | $21.54M |
| 11 | Atlanta Falcons–Pittsburgh Steelers | Sept. 13 | $17.29M | $1.38M | $223.65K | $18.89M |
| 12 | Chicago Bears–Carolina Panthers | Sept. 13 | $15.39M | $789.24K | $334.73K | $16.52M |
| 13 | Tampa Bay Buccaneers–Cincinnati Bengals | Sept. 13 | $15.24M | $617.37K | $179.16K | $16.03M |
| 14 | Baltimore Ravens–Indianapolis Colts | Sept. 13 | $13.78M | $1.53M | $281.12K | $15.59M |
| 15 | Cleveland Browns–Jacksonville Jaguars | Sept. 13 | $12.84M | $310.86K | $384.23K | $13.54M |
| 16 | New York Jets–Tennessee Titans | Sept. 13 | $8.46M | $460.33K | $258.44K | $9.18M |
* Polymarket US and combined game totals are lower bounds because the Sept. 10 Daily Market Report remains unavailable. The ranking covers direct markets assigned to the 16 Week 1 matchups; NFL-only combo contracts are reported separately and are not allocated to individual games.
The other 12 matchups generated another $322.98 million. Across the full 16-game board, available venue volume reached at least $836.45 million: $701.61 million on Kalshi, $47.58 million on Polymarket Global and $87.26 million in confirmed Polymarket US Daily Market Report volume.
NFL accounted for 30.1% of Kalshi sports volume
Kalshi generated $3.26 billion in sports contract volume during the week and $12.98 billion across all markets in our prediction-market volume tracker. NFL contracts, including NFL-only combos, represented 30.1% of Kalshi sports volume and 7.6% of its total market volume.
Polymarket Global recorded $695.21 million in sports volume and $1.12 billion across all markets. Its $28.00 million in NFL trading represented 4.0% of sports volume and 2.5% of total volume.
| Venue | NFL volume | Sports volume | NFL share of sports | Total volume | NFL share of total |
|---|---|---|---|---|---|
| Kalshi | $983.36M | $3.26B | 30.1% | $12.98B | 7.6% |
| Polymarket Global | $28.00M | $695.21M | 4.0% | $1.12B | 2.5% |
Methodology
Our analysis uses deduplicated hourly contract-volume and trade-count data for the Monday-Sunday UTC windows of Aug. 31-Sept. 6 and Sept. 7-13. For each provider market and hour, the latest value by computation time was selected before summing. The Sept. 7-13 window ended at 12:00 a.m. UTC on Sept. 14.
Kalshi’s direct NFL total covers current catalog markets attributable only to the NFL. Its combo total includes complete combo structures only when every resolved leg was NFL-related. Mixed-category combos, unresolved combos, Netflix ticker false positives, college football, CFL and Olympic flag-football markets were excluded. Direct legs and combo contracts were counted once each as separate provider markets.
Sports and platform totals use our category and provider aggregates for the same window. The refreshed game-board figures use final Kalshi public volume, Polymarket Global data through 5:00 a.m. UTC on Sept. 15 and posted Polymarket US Daily Market Report Trade Volume through Sept. 14. The Sept. 10 Polymarket US report remains unavailable. Volume measures contracts traded, not dollar notional.
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