norways sovereign wealth fund had investments in svb financial group and signature bank that were valued last week at a combined 28 billion norwegian kroner 2633 million it said monday silicon valley bank collapsed friday after a run on deposits doomed the techfocused lenders plans to raise fresh capital while signature bank suffered a similar fate over the weekend as investors became concerned about its high share of uninsured deposits both banks are now under the control of us authorities norges bank investment management the arm of the central bank that manages the sovereignwealth fund commonly known as the oil fund said that as of wednesdays closethe day before the us banking turmoil beganthe fund had a stake worth nok17 billion in svb equities and nok11 billion in bonds while its equity stake in signature bank was worth nok400000 this is the biggest us bank collapse since the financial crisis and we are closely monitoring the situation in the market nbim said in an emailed statement