Legacy firm Patton Boggs, Kenyon & Kenyon, McKenna Long & Aldridge, Bingham McCutchen and Dickstein Shapiro were the Am Law 200 firms that saw their attorney head counts drop the most over the last 12 months, according to data compiled by ALM’s RivalEdge. A handful of other Am Law 200 rivals such as Stinson Leonard Street saw double-digit percentage increases, mostly as a result of mergers.

The Am Law Daily tapped RivalEdge, an online “listening platform” acquired two years ago by our parent company ALM Media, as a means of determining which firms were expanding and contracting over the past year. In early 2012, in a far less scientific exercise, we used a somewhat different methodology to determine those firms that were busy hiring lateral partners and others feeling picked on in the lateral market.