BMW Championship, US Open Drove Huge Week For Sports On Prediction Markets Volume
Prediction markets continued to see sturdy development throughout the week of Aug. 17-23.
Across Kalshi and Polymarket Global, merchants exchanged greater than 10.27 billion contracts for $3.36 billion in quantity. Trading exercise accelerated even sooner, with mixed trades rising 7.9% week over week to 77.28 million transactions.
The week’s greatest driver was sports activities, which accounted for roughly 76.5% of mixed quantity. Politics and regulatory markets adopted at 14.2%, whereas macroeconomic and pop-culture markets made up the rest.
| Metric | Kalshi | Polymarket Global | Combined |
|---|---|---|---|
| Contract quantity | 9.06B | 1.21B | 10.27B |
| WoW contract development | +4.5% | +9.6% | +5.1% |
| Execution-price quantity | $2.74B | $620.7M | $3.36B |
| WoW execution-dollar development | +4.0% | +7.7% | +4.7% |
| Trades | 64.14M | 13.14M | 77.28M |
| WoW commerce development | +7.1% | +12.0% | +7.9% |
| Open curiosity* | 662.4M | 249.9M | — |
| Active markets* | 107,425 | 186,852 | — |
Polymarket US is tracked individually as a result of its Daily Market Reports use a distinct reporting methodology and don’t present comparable weekly trade-count information.
What drove buying and selling final week?
Sports remained the clear major engine of prediction-market exercise, accounting for about $2.57 billion, or 76.5%, of quantity.
PGA Tour BMW Championship
The BMW Championship generated important exercise on Kalshi forward of Thursday’s opening spherical.
Kalshi’s Top 5, Top 10, and Top 20 end markets generated greater than $200,000 in quantity on Wednesday alone. Scottie Scheffler’s Top 5 and Top 10 contracts attracted $303,634.68 in complete quantity, whereas Rory McIlroy and Xander Schauffele additionally drew some motion.
European soccer and tennis
European soccer markets have been one other main supply of quantity on each platforms. La Liga and Premier League matches generated greater than $300 million in mixed worth.
Tennis additionally contributed loads of exercise, with US Open tune-up matches producing greater than $6.7 million in single-day order stream on Kalshi for some matchups.
Politics remained energetic
Political markets generated roughly $478 million, or 14.2% of mixed quantity.
The Michigan Democratic Senate primary was one of many week’s greatest political markets, producing greater than $7.5 million in weekly quantity throughout Kalshi and Polymarket US.
Other notable exercise included:
- Florida Republican gubernatorial major: $5.9 million in public-facing commerce quantity on Polymarket US.
- South Carolina Senate markets: $11.40 million in complete execution-price quantity throughout Kalshi and Polymarket Global.
- UK Clacton by-election: $4.79 million in complete execution-price quantity on Polymarket Global.
Fed and interest-rate markets
Interest-rate markets generated roughly $55.2 million in weekly notional quantity.
Traders overwhelmingly anticipated the Federal Reserve to depart charges unchanged on the upcoming FOMC meeting, with the chance of no change remaining above 97% throughout the related markets.
Taylor Swift leads weekly artist view-count markets
Kalshi noticed $257,594.55 in complete buying and selling quantity throughout its weekly artist view-count markets.
Taylor Swift led the class with $130,041.24 in complete buying and selling quantity—$78,689.11 greater than Bad Bunny (2.5×; $51,352.13 complete), $110,935.14 greater than Drake (6.8×; $19,106.10 complete), and $115,793.89 greater than Ariana Grande (9.1×; $14,247.35 complete). Swift accounted for 50.5% of the class’s $257,594.55 in complete quantity.
Three fascinating issues from this week’s buying and selling
Looking at contract costs, market density, and open curiosity reveals some notable variations in how the 2 platforms are getting used.
Traders on Kalshi are buying and selling extra low-priced contracts
Kalshi recorded 9.06 billion contracts price $2.74 billion in quantity. That works out to a mean execution value of roughly 30.3 cents per contract.
Polymarket Global recorded 1.21 billion contracts and $620.7 million in quantity, producing a mean of roughly 51.4 cents per contract.
In different phrases, a bigger share of Kalshi’s contract exercise occurred at decrease costs. That helps clarify why Kalshi generated considerably extra contract quantity with out the identical kind of improve in greenback quantity.
Polymarket has extra markets, however Kalshi concentrates extra exercise
Polymarket Global had roughly 186,852 energetic markets, in contrast with 107,425 on Kalshi.
But the quantity of quantity generated per energetic market was dramatically completely different:
- Kalshi: ~$25,544 per energetic market
- Polymarket Global: ~$3,322 per energetic market
The numbers level to 2 completely different market buildings.
Kalshi’s exercise is extra concentrated in a smaller variety of closely traded contracts, whereas Polymarket Global spreads exercise throughout a a lot bigger variety of markets.
Kalshi has a lot larger buying and selling turnover
Kalshi generated roughly 7.5 instances extra weekly contract quantity than Polymarket Global:
- Kalshi: 9.06 billion contracts
- Polymarket Global: 1.21 billion contracts
But its Sunday open curiosity was solely about 2.65 instances larger:
- Kalshi: 662.4 million
- Polymarket Global: 249.9 million
That hole suggests considerably extra turnover on Kalshi. Traders seem like coming into and exiting positions extra continuously, whereas a bigger proportion of Polymarket Global positions stay excellent relative to the platform’s weekly buying and selling quantity.
Week-over-week momentum
The trade continued to develop throughout the foremost exercise metrics.
| Metric | WoW Change |
|---|---|
| Kalshi commerce depend | +7.1% |
| Polymarket Global commerce depend | +12.0% |
| Combined execution-dollar quantity | +4.7% |
| Combined contract quantity | +5.1% |
| Polymarket US open curiosity (Aug. 22) | 111.4M |
One notable takeaway is that commerce counts grew sooner than greenback quantity. That suggests the week’s development was pushed partially by elevated buying and selling frequency relatively than merely bigger quantities of capital being deployed.
Broader trade developments
Sweepstakes operators proceed shifting towards prediction markets
Regulatory stress on dual-currency sweepstakes gaming continues to push operators towards prediction-market infrastructure.
ProphetX has already moved away from its sweepstakes mannequin and launched its prediction markets platform. And Fliff, by means of Fliff FCM LLC, recently applied for registration as a Futures Commission Merchant with the National Futures Association.
The developments level to an more and more blurred line between the sweepstakes and prediction market industries.
Bottom line
The Aug. 17-23 interval was one other sturdy week for prediction markets.
The headline numbers:
- 10.27 billion mixed contracts traded
- $3.36 billion in mixed quantity
- 77.28 million mixed trades
- +7.9% weekly development in commerce depend
- +5.1% weekly development in contract quantity
- Sports accounted for roughly 76.5% of quantity
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