Prediction market volumes are booming in 2026, on pace to more than quadruple this year alone and reach an estimated $1 trillion in the next four years, according to Bernstein. Volumes have already surged in the first few months of this year, the investment bank wrote in a report Tuesday, with Kalshi and Polymarket, the two largest platforms, seeing about $60 billion in market volume year-to-date — more than the $51 billion in total prediction market volume in all of 2025. Growth rates for the