Terry Duffy, CEO of CME, is about to step down, causing CME's stock price to drop 4% in pre-market trading The CEO of CME, Terry Duffy, is about to step down, and CME's stock price fell 4% before trading. Terry Duffy expressed concern about the recent approval of perpetual contracts by US regulators, stating that perpetual contracts have little practical use for institutional investors and expose retail traders to excessive risk. He also disagreed with the decision of the US Commodity Futures Trading Commission (CFTC) to approve the first batch of encrypted perpetual contracts, warning that perpetual contracts and prediction markets are sparking a frenzy of retail speculation.