Polymarket's international prediction market saw another slump in notional trading volume for May while its U.S. platform continues to grow.
Prediction market trading volume has risen from under $5 billion monthly in mid 2025 to nearly $24 billion in April 2026, with sports dominating.
Discover how trade volume measures market activity and liquidity, boosting investor confidence. Learn its significance in ...
Volume is the number of shares of a stock that have changed hands over a certain period of time, typically one day. Stocks with higher volumes have more investors interested in buying or selling them.