After the World Cup boom fades, prediction markets turn to brokerages to sustain user trading

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After the World Cup-driven trading boom faded, prediction markets such as Kalshi and Polymarket turned to brokerage partnerships, entertainment topics, and social sharing to convert event-driven attention into sustained trading. Combined trading volume on platforms associated with Kalshi and Polymarket fell from $50.6 billion in July to $45.3 billion in August, a decline of 14.5%; Robinhood generated $156 million in event contract revenue in Q2 2026.