45,000 Polymarket Markets Recorded Zero Trading Volume, CNBC Analysis Shows

Roughly 70% of all closed markets on Polymarket recorded under $10,000 in reported trading volume between 2021 and the end of May 2026, a CNBC analysis found. The findings land as prediction markets post surging volume, driven by the 2026 FIFA World Cup. That gap shows how a small group of marquee contracts, rather than