Polymarket US recorded a notional trading volume of $2.72 billion for the week ending in early October 2026. This figure marks a significant increase from the $60.8 million reported in early January of the same year.
The platform reached a daily peak of $698.8 million on October 11, 2026. As of that date, the total volume for the preceding 30 days exceeded $11.39 billion, indicating a period of sustained growth.
The surge in activity is largely attributed to sports betting markets, specifically NFL and NCAA football contracts. The introduction of combo and parlay-style contracts in August 2026 further accelerated trading activity.
In September 2026, Polymarket US achieved a milestone by surpassing the trading volume of its international counterpart. Despite this growth, the platform continues to compete for market share against Kalshi.
The broader sector also saw record-breaking figures, with Polymarket and Kalshi combined reaching $8.56 billion in two-day volume and $22.2 billion in weekly volume around October 11, 2026.
Polymarket US operates under the regulation of the Commodity Futures Trading Commission. The platform reached its current status following the acquisition of QCEX and a subsequent relaunch in late 2025.
