Silicon Valley Bank Fallout Poses New Risks for Markets, Fed

A Silicon Valley Bank worker in Santa Clara, Calif., told people waiting to get in on Friday that the bank’s headquarters was closed. Bank regulators were racing over the weekend to sort out Friday’s stunningly hasty collapse of Silicon Valley Bank and are facing high stakes as they try to shield the banking system from wider fallout. A plan that soothes nerves about access to uninsured deposits—most of the bank’s deposits are sizable enough that they don’t carry Federal Deposit Insurance Corp. protection—could tamp down the crisis and limit any...