Wells Fargo & Co. would need to raise at least $40 billion in new debt to cover federal regulations requiring large national banks to cover their losses without taxpayer assistance in the event of a financial collapse similar to the one that occurred in 2008, MarketWatch reported. John Shrewsberry, Wells Fargo’s chief financial officer, said at an investor conference that his bank and others are “victims” of upcoming regulatory requirements. There is a possibility that bank would need an extra $20 billion on top of the $40 billion, he said. The new debt depends on a range of factors, including Wells Fargo’s risk-weighted asset growth, when and how quickly it issues debt, and how much of an internal buffer the bank holds, Shrewsberry said.