St. Louis firms with strong corporate practices are keeping busy with steady mergers and acquisitions work, according to Armstrong Teasdale managing partner Michael Chivell. For its size, St. Louis has an unusually large number of publicly traded companies, he said.

Across the board, those companies have been “in the acquiring mode, and some have been acquired in the last year, so it’s been very active.” Armstrong Teasdale, for example, has added 16 attorneys so far in 2011, with litigation, intellectual property and corporate law leading the way.