Kalshi vs Polymarket

The two venues that are ~94% of the category, side by side. Composition from Artemis; totals from our own crawl.

KalshiPolymarket
24h volume$409.96M$102.98M
30d volume$10.76B$2.25B
Open interest$848.43M$313.77M
All-time volume$65.55B$43.86B
Marketscounted differently per venue99,5762,100
Sports share29.2%67.2%
Neither sport nor crypto45.5%11.5%
RegulatoryCFTC DCMOffshore / onchain

Kalshi$10.76B

Click a category to drill into its markets
Exotics$4.48BSports$3.15BCrypto$2.72BCommodities$196.3M

Polymarket$2.25B

Click a category to drill into its markets
Sports$1.51BCrypto$479.1MPolitics$180.7MClimate and …Financials