Nvidia named longtime CFO Colette Kress interim CEO on Thursday after Jensen Huang resigned Wednesday, ending his leadership of the company, which he had led since its 1993 founding. According to Sina Finance, Kress had sometimes opposed deals Huang championed and worked to prevent Nvidia's financial risks from becoming too concentrated among a few companies. One proposed deal would have had Nvidia guarantee $250 billion in credit support for OpenAI to fill 8 gigawatts of data center capacity with Nvidia's latest chips; in August, Nvidia split the deal into two parts and had so far committed to guarantee about $100 billion for the first part. The board said Thursday it would seek a permanent successor from both inside and outside the company. Nvidia shares fell nearly 7% Thursday and had lost more than 25% over the previous two weeks amid scandals at the company.