Citigroup Inc. has reported that in the fourth quarter of 2012 it made net income of $1.2bn, equating to $0.38 per diluted share. This is an improvement compared to the corresponding period last year, when the firm made net income of $956m, or $0.31 per diluted share. Quarterly revenues rose, year-on-year, from $17.2bn to $18.2bn. [...]