Challengers continue to make progress against established, old-line firms in the minds of senior counsel at big corporations, the latest ranking by Acritas, the United Kingdom-based market research firm, shows.

DLA Piper jumped to second place in the Acritas Global Elite Law Firm Brand Index 2015, gaining 12 points and two places from last year, to rank behind Baker & McKenzie, which has topped the index since its inception in 2010.