Polymarket Sports and Esports: $376.7M in Weekly Volume
Prediction Frontier analysed Polymarket sports and esports trading for September 14–20, 2026: $376.7M in volume, wallet activity, NFL ticket sizes and liquidity.
PF Sports · Week 1 · September 14–20, 2026
Sports and esports traded $376.7M on Polymarket's order book this week, measured trade by trade on-chain. That is 69% of everything that changed hands on the exchange. Sports alone took $299.3M from 37,608 wallets, and esports added $77.4M from 13,070. Two things happened at once: soccer supplied between $14.8M and $27.0M every single day, and the NFL arrived at full size, with its Week 2 Sunday slate trading 3.8 times what Week 1's did.
Polymarket sports and esports volume: September 14–20
| Category | Trading volume | Wallets |
|---|---|---|
| Sports | $299.3M | 37,608 |
| Esports | $77.4M | 13,070 |
Polymarket soccer volume and the international break
Soccer traded $137.6M, 46% of all sports volume, and had more wallets than any other sport on all seven days. The FIFA international window takes the top European leagues off the board for two weekends. The four international breaks of the past year cut soccer volume by 34% to 62% (sections 7 and 11).
NFL ticket sizes and trading concentration
It traded $59.7M in the window, 64% of it on Sunday, and 69% of its money arrived in single tickets of $5,000 or more, against 37% for soccer and under 30% for tennis and esports (sections 5 and 7).
Large Polymarket trades near settlement
The two largest single trades, $4.85M on the Chiefs and $3.27M on Betis, were sales at 99.9c by wallets that had bought before kickoff. A fifth of soccer volume and a quarter of esports volume traded at 97c or above, so headline volume overstates how much genuine price risk changed hands (sections 5 and 6).
Sports prediction market activity by time of day
Esports did 52% of its volume before 10am ET and tennis 42%. MLB did 58% after 6pm and UFC 81%. Depth in any given market depends as much on the hour as on the sport (section 4).
Esports wallet loyalty and concentration
40% of esports wallets traded nothing else, the median wallet spent $124, and the ten largest wallets held 16% of volume, against 41% to 42% in soccer and the NFL (section 5).
Sources and methodology
Prediction Frontier rebuilt September 14–20, 2026 from Polymarket’s on-chain trade record. Taker fills on the Polygon exchange were pulled through Dune, classified by sport and analysed by day, hour, wallet and ticket size. Sports and esports are reported separately.
The full PF Sports Week 1 report runs 22 pages with 27 charts, compares Polymarket with Kalshi on price and depth, and sets out market calls for September 21–27. Section references above refer to that PDF.
Related PF Sports research
Read our analysis of the liquidity behind Polymarket’s $299 million sports week, then follow the trade-level findings in the Ravens’ 12¢ NFL comeback on Kalshi and Polymarket and our October sports prediction market analysis.