The Carlyle Group’s hedge fund group may be under fire because of poor performance, but according to the firm’s co-chief executives the firm is facing another challenge: too much money trying to get into its funds.

Carlyle has benefited as cash-rich institutional investors look for places to park their capital, co-founder and co-chief executive David Rubenstein said on a call on July 29 to discuss the firm's second-quarter earnings. The firm secured $55 billion in gross commitment to its funds and various investment strategies since the beginning of 2013, in the best fundraising period since the exuberant years of 2007 and 2008.