Prediction markets hit a record $10.8 billion in weekly trading volume for the week ending June 15, marking the largest week ever for event-contract platforms. The a16z Crypto data snapshot also placed open interest near $1.5 billion, with both metrics hitting all-time highs in the same week. The volume surge came as several major events overlapped, including the SpaceX IPO, a U.S.-Iran peace deal, the NBA Finals, the Stanley Cup and the opening week of the World Cup.