Data compiled by Woofun AI indicates that US users may be generating between $11 billion and $34 billion in trading volume on offshore prediction markets, representing 12.5% to 31.5% of the nation's total prediction market activity. Polymarket alone accounts for an estimated $11 billion to $27 billion of this figure, a range the consulting firm Crane Zeg characterizes as 'conservative.'

Concurrently, projections suggest that if current market shares persist, annual offshore trading volume from US participants could escalate to $133 billion by 2030. This growth occurs despite regulatory friction; while the CFTC has adopted a more lenient stance toward domestic entities like Kalshi, unlicensed offshore platforms remain prohibited from serving US clients. Polymarket was previously banned from US operations in 2022 for failing to register its services with American regulators.