Prediction markets just had their biggest week ever. Trading volume hit $10.8 billion in the seven days through Sunday, according to data from venture capital firm Andreessen Horowitz's crypto arm, A16z crypto. It's the first time weekly volume has crossed the $10 billion mark, fueled by a pair of massive events — the SpaceX initial public offering and the World Cup.
The $10.8 billion week
The record comes from A16z crypto's internal tracking. The firm didn't break down which specific markets drove the surge, but the timing lines up neatly. The SpaceX IPO, which closed its first trading day up 38% on Tuesday, had been one of the most anticipated listings of the year. The World Cup, meanwhile, has been running for nearly two weeks now, with bets on match outcomes, goal totals, and even yellow cards piling up across platforms like Polymarket and Kalshi.
This isn't just a one-off spike. Weekly volumes have been climbing steadily since spring, when the Super Bowl and a string of Fed rate decisions turned prediction markets into a go-to venue for event-driven speculation. The $10.8 billion figure is roughly double the weekly average from the first quarter of 2026.
Prediction markets have long been a niche corner of crypto — useful for political betting and the occasional sports final, but rarely a headline grabber. The $10 billion week changes that. It signals that these platforms are starting to absorb the kind of liquidity that used to flow into derivatives exchanges like Deribit or Binance Futures.
The timing isn't great for traditional bookmakers. Regulated sportsbooks in the U.S. have been struggling with thin margins and state-level tax hikes. Crypto-based prediction markets, which often operate with lighter oversight, can offer better odds and faster settlement. That's drawing in a crowd that might otherwise have placed a parlay at DraftKings or FanDuel.
Volume could stay elevated. The World Cup final is still a week away, and the SpaceX IPO mania has spilled over into secondary markets — there are already contracts trading on whether Elon Musk will step down as CEO by year-end. A16z crypto hasn't said whether it plans to publish weekly data regularly, but the firm's researchers are expected to release a broader report on prediction market growth next month.
For now, the record stands. And with the U.S. presidential election cycle already generating chatter on platforms like PredictIt, the $10 billion week might not be the last one.
