PANews June 24 news, according to The Block, prediction market platform Polymarket saw the "Soccer" category surpass $2 billion in trading volume in the first 10 days after the World Cup kicked off, up about 300% compared with the previous 10-day period, with the category’s average daily volume rising from $53 million to approximately $220 million. Over the same period, compliant prediction platform Kalshi’s aggregate open interest exceeded $1.16 billion for the first time last week, growing about 350% since the start of the year. The report noted that Polymarket’s overall open interest remained broadly flat during the World Cup, while Kalshi, supervised by the CFTC and supporting direct USD deposits, is attracting more U.S. institutions and high-net-worth users to hold long-term positions, and its positioning directly rivals compliant sports betting platforms such as DraftKings and FanDuel.