sentences:  In 1984, after recruiting Bryan Cressey to join the firm from First Chicago, the firm's name was changed to Golder Thoma Cressey and with the promotion of Bruce Rauner to partner the firm would come to be known as Golder, Thoma, Cressey, Rauner, Inc. (GTCR), although it would still often be referred to as Golder Thoma.In 1998, disagreements between the senior partners led Golder, Thoma, Cressey, Rauner, Inc. split into two private equity firms.Both firms continue to invest primarily through consolidations of specific industries, referred to as roll-ups