Goal-Line Stand: Kalshi x ADI Predictstreet Bring $14.5B Prediction Market Circus to World Cup ⚽

Prediction market trading hit an all-time high last week, with weekly volumes across the sector reaching $14.5 billion and outstanding bets climbing to a record $1.6 billion for the third consecutive week, according to data from Artemis cited by Andreessen Horowitz, an investor in Kalshi and Robinhood. Kalshi accounted for 62% of total trading volume during the period, while Polymarket held 28%. The figures arrive as Kalshi unveiled a strategic partnership with ADI Predictstreet, the Gibraltar-licensed platform that became an official FIFA partner earlier this year, to expand prediction market access during the FIFA World Cup 2026™ knockout stage.

Under the agreement, Kalshi branding will appear alongside ADI Predictstreet in stadium, television, and online placements as the tournament moves into its later rounds. The companies will jointly launch a co-branded hub featuring football prediction markets, live updates, and exclusive fan content, with plans to extend market expansion into ADI Predictstreet's international footprint after the competition. Both firms will also explore infrastructure integrations on ADI Chain's technology, including stablecoins, Web3 products, and on-chain settlement solutions for global markets. ADI Predictstreet CEO Dimitrios Psarrakis said the deal aims to build a global ecosystem spanning sports, news, entertainment, and real-world events, while Kalshi co-founder and CEO Tarek Mansour stated, "The World Cup™ is the largest stage for any brand. We see this as a massive opportunity to increase global awareness and fan engagement. We're excited to partner with ADI PredictStreet to bring more fans into the prediction market action."

Kalshi enters the partnership during a record-breaking stretch, having posted daily volumes exceeding $1 billion during the first two weeks of World Cup play. The platform has also secured tournament-focused agreements with the Argentine Football Association, the Croatian Football Federation, podcasting duo Men in Blazers, and Croatian star Luka Modrić. According to Bank of America, Kalshi holds roughly 90% of the regulated US prediction market share. ADI Predictstreet holds a Gibraltar operating license and recently integrated Chainlink oracle infrastructure for settlement data, operating on ADI Chain's compliance-ready blockchain.

The broader prediction market sector is drawing additional entrants ahead of the tournament. DraftKings announced on Friday the launch of DKeX, noting that its DraftKings Predictions product is expected to expand next month amid heightened World Cup interest. The 2026 FIFA World Cup opens Thursday across North American stadiums, featuring 104 matches in an expanded 48-team format, with analysts at Bernstein projecting more than $3 billion in incremental handle. Rothera, an exchange that Robinhood began routing wagers to in late May, has seen weekly trading volumes climb to $805 million from $2.1 million, according to Artemis.