Citigroup said Friday that first-quarter profit fell 27%, hurt by a drop in trading and investment banking. The New York-based bank reported a profit of $3.5 billion, or $1.10 per share. That compares with the $4.77 billion, or $1.51 per share, it reported in the same period of 2015. Still, that beat the $1.03 expected by analysts polled by Thomson Reuters. Revenue was down 11%, to $17.56 billion from $19.74 billion a year ago. But that also beat the expectations of analysts, who had predicted $17.46 billion. $C, Citigroup, Inc. / 240