This 2009 Australian report from KPMG (one of the world’s largest accounting firms) finds that gambling was the most common motivator of fraud with an average value of $1.1 million per incident.
“New York City Launches Sweeping Investigation Into Polymarket and Kalshi” | The Wall Street Journal
August 12, 2026
By Kevin T. Dugan, Katherine Long “The New York City Council is investigating four prediction markets for alleged deceptive marketing