Fast-growing Polsinelli continued expanding in 2014, with revenue jumping 13.4 percent to $368 million for its fiscal year ending Oct. 31. The Kansas City, Mo.-based firm has more than doubled its revenue since 2010, with that figure rising by double digits every year but one since then. The firm, which has offices in 19 cities, made the Am Law 100 list for the first time last year.

This extraordinary growth has eaten into profit margins, as net income increased only 1.4 percent, to $73 million. Profits per partner dropped 5 percent, to $650,000, partly thanks to the equity partner ranks rising by nearly 7 percent, to 112. Meanwhile, revenue per lawyer rose 1 percent, to $530,000.