Silicon Valley Bank, which announced that it was looking to raise more than $2 billion in additional capital after suffering a $1.8 billion loss on asset sales, has been closed by regulators. The Federal Deposit Insurance Corp. has taken control of the bank’s deposits, and insured depositors will have access to their deposits no later than Monday morning. The move represents a rapid downfall for SVB, and its parent company SVB Financial Group's shares fell 60% on Thursday, and dropped another 60% in premarket trading on Friday before being halted.