Morgan Stanley quarterly profit drops 42 percent, shares plunge

``The bank, whose shares fell as 6.3 percent to $31.81 in early trading on Monday, said its trading revenue fell 17.2 percent to $2.03 billion in the period, contributing to a 42.4 percent drop in profit attributable to shareholders... Among the big six U.S. banks, only Wells Fargo & Co managed an increase in revenue, while Citi turned in the biggest rise in net profit - 51 percent - largely due to cost cuts.''