Citigroup Inc. (C) could raise money through a $20 billion equity offering to repay the bailout money it has received from the government for its participation in the Troubled Asset Relief Program (TARP) at the height of the credit crisis last year. Citigroup’s chairman, Vikram Pandit, has revealed yesterday that the company is in a position [...] ($C) Citigroup Plans $20 Billion Equity Offering