Post-World Cup prediction markets keep growing as Kalshi and Polymarket tighten their grip
A PANews report by GO2MARS argues that prediction markets did not cool off after the World Cup and are now moving into a more durable phase of growth. The piece says September volumes hit a new high, though much of the headline increase came from parlay contracts that inflate notional turnover. On a seven-day basis, Kalshi and Polymarket together accounted for 94.6% of trading volume, leaving the rest of the field with only a small share. The report says the sector’s story is also changing. What began as a sports-betting-like product is increasingly being framed as an information market and, eventually, as a hedging tool and financial infrastructure layer. That shift is being tested by real institutional activity. Cantor Fitzgerald opened Kalshi event contracts to about 3,000 institutional clients, while FalconX and AneraLabs completed an on-chain block trade on Polymarket tied to Nvidia H100 compute pricing. Even so, the article says the industry’s ceiling still depends on two unresolved issues: regulation and capital efficiency. In the US, Kalshi remains at the center of a federal-versus-state fight over whether sports event contracts fall under federal commodities law or state gambling rules. At the same time, full collateralization and limited order-book depth continue to constrain larger hedging flows, pushing institutions toward negotiated block trades and market-maker-supported liquidity.








