Principal Phil B. Nelson helps clear NYSE/Archipelago merger.

The Justice Department announced that it would not challenge the New York Stock Exchange’s acquisition of Archipelago, the owner of the world’s largest electronic stock market. DOJ reported that imminent entry would prevent the acquisitions from reducing competition. EI Principal Philip B. Nelson, assisted by other EI economists, worked with attorneys from Wachtell Lipton and Sullivan & Cromwell LLP in defending the acquisitions.