U.S. senators from both parties asked Kalshi and Polymarket to explain before November 3 how they prevent insider trading and market manipulation in election betting and disclose the number of suspected violations.
SEC CFTC Director of Enforcement David Woodcock said that the SEC is monitoring fraud, insider trading, and manipulation in prediction markets and expects it may take enforcement action in this area in the future.
The report claims that Brazil's election saw a reversal and that prediction markets became an “insider cash-out machine,” but provides no evidence of election results, markets, or insider trading.
Robinhood CEO Vladimir Tenev filed on September 21 under a prearranged trading plan to sell 259,166 HOOD shares valued at approximately $31.05 million.
Sources say that a Robinhood employee was charged by the U.S. Department of Justice with commodities fraud for allegedly engaging in insider trading on Hyperliquid.