Prediction Markets Hit a Record $10.8 Billion in Weekly Trading Volume
Data from venture capital firm Andreessen Horowitz’s crypto division, A16z crypto, show prediction market trading volume reached a record $10.8 billion during the week ending June 15, 2026, marking the first time weekly activity exceeded the $10 billion threshold.
The milestone followed a year of rapid expansion across leading platforms, with total volume more than doubling from levels recorded earlier this spring.
A16z crypto stated on June 19 in a post on X:
“ Prediction markets hit a record $10.8 billion in weekly trading volume in the week ending June 15 — their biggest week ever.”
SpaceX IPO, Sports Finals, and Global Events Drive Prediction Market Surge
Several major events gave traders a wide set of contracts to price during the record week. Activity centered on the SpaceX IPO, a U.S.-Iran peace deal, the NBA Finals, the Stanley Cup Final, and the early stages of the World Cup, creating simultaneous demand across finance, geopolitics, and sports markets.
A16z explained:
“Several big events coincided that contributed to the all-time high: the SpaceX IPO, a U.S.-Iran peace deal, the NBA Finals, the Stanley Cup, and the opening of the World Cup, among them.”
The SpaceX listing was one of the key drivers of activity. Its debut at a $2.1 trillion valuation drew significant interest from traders, who turned to prediction contracts to assess expectations for the company’s future developments.
Meanwhile, the sports calendar delivered its own drama. Championship showdowns in basketball and hockey, combined with the World Cup’s opening stage, attracted a broad wave of traders seeking exposure to some of the year’s most closely watched events.
Prediction Platforms Drive Record Weekly Trading Volume
Platform rankings in the chart shared by A16z on X indicate Kalshi and Polymarket accounted for the largest portions of weekly volume. Additional activity came from platforms including Opinion, Predictdotfun, Limitless, Myriad, Probable, HIP-4, and Rothera. Combined trading across those venues pushed industrywide volume to a new high-water mark.
Growth trends visible in the data show a sustained rise beginning in the second half of 2025. Weekly volume moved from hundreds of millions of dollars during mid-2025 to several billion dollars by late 2025, before accelerating further during the first half of 2026.
Market Growth Lifts Baseline Activity Far Above Prior-Year Levels
Historical comparisons highlight how sharply participation has increased over the past year. Weekly prediction market turnover hovered around $500 million during a typical week one year earlier. Even the strongest weeks during that period remained below the $1 billion mark, according to the figures shared by A16z crypto.
“A year ago, a typical week on prediction markets ran around half a billion dollars, and even the busiest weeks stayed under $1 billion,” A16z crypto noted, emphasizing:
“That floor has climbed steadily since. It climbed past $1 billion last fall, past $4 billion by winter, and into the $6–7 billion range this spring.”
