Northern Trust reported $778.6 billion in assets under management as of March 31, up 2.8% from the prior quarter and up 3% from the year before. Of that total, the firms institutional assets under management came to $632.6 billion, up 3.9% from the prior quarter and up 3% from the previous year, said spokesman John OConnell. The broader company, including its global custody business, reported net income of $385.2 million for the quarter, more than triple the prior quarters $125 million total and more than double its year-earlier income, buoyed by a $167.9 million gain from the companys restricted stock holdings in Visa USA Inc., San Francisco, which went public in March. Even without the Visa gains, Northern Trusts net income would have been up 23% from the year before, Mr. OConnell noted. The parent companys consolidated revenues, meanwhile, came to $1.15 billion, up 13% from the prior quarter and up 39% from the year before.