Kalshi, Polymarket Combined Volume Decreases 15% in August

2026-09-04

The combined trading volume for Kalshi and Polymarket experienced a 15% monthly decline in August, marking the first such decrease in a year. Kalshi reported $37.17 billion in volume, while Polymarket and its US platform collectively handled $8.16 billion.

Source: The Block

Reported by VERA Newswire.