Citigroup executives are scrambling to convince investors that concerns about the New York financial giant's health are greatly overstated, even as the company's board meets today to discuss options including the possible sale of business units. The price of Citigroup stock has fallen 57 percent this week to trade around $4 this morning amid rising investor concern that the company must raise more money in order to survive massive projected losses on a wide range of problematic investments. Executives say that the company is under assault by investors seeking ... (more)