Big 4 firms lost a combined 64 public company audit engagements in 2014 as second-tier national firms snatched up a combined 58 new clients, according to the latest data on auditor changes.

Big 4 firms lost a combined 64 public company audit engagements in 2014 as second-tier national firms snatched up a combined 58 new clients, according to the latest data on auditor changes.