Jensen Huang resigned as Nvidia CEO on Thursday, ending his 33-year tenure, after reports that he had an extramarital affair. Nvidia’s board launched an independent investigation to determine whether Huang had become a target of foreign intelligence agencies; the board said there was no evidence that company secrets or national security had been compromised. CFO Colette Kress was appointed interim CEO. Nvidia shares fell more than 14% at Thursday’s opening, and closed down about 4.6%. The Financial Times reported that the board had approached Arm CEO Rene Haas to ask whether he would be willing to replace Huang; Nvidia said speculation about candidates was premature.