Most big law firms Chicago report revenue, profit increase in this year.

Almost all of law firms Chicago outpaced the national increases in revenue and net operating income: 2.7 percent and 3.3 percent, respectively. The firm posted $24 million more in revenue in 2015 and, because of law’s fixed-cost structure, that “falls to the bottom line.” That said in a statement that the firm’s profits resulted from “a combination of factors, including a focus on expense management, growth in strategic practices and an increase in the number of equity partners.”

Two other exceptions were Winston & Strawn, which had a 1 percent decrease in net operating income while revenue grew 4 percent to $786 million, and McDermott Will & Emery, which saw 1 percent decreases in both categories.

Jenner & Block had a good year, posting a 14 percent increase in revenue, to $465 million, and a 15 percent increase in net operating income.