California Home Loan 360

Fourth-quarter results and an $18-billion sub-prime write-down shake Wall Street's confidence. The sub-prime mortgage crisis hit Wall Street with full fury Tuesday as Citigroup Inc. reported a nearly $10-billion fourth-quarter loss, and both Citigroup and Merrill Lynch & Co. got cash infusions to shore up their financial stability.

Major indexes inch lower in the U.S. and foreign shares gain as central banks make more cash infusions.