ACC Capital Holdings (ACCCH) was a national mortgage lender based in Orange, California. The company is the largest privately held retail mortgage lender in the United States and the largest subprime lender by volume. ACCCH was founded by Roland Arnall.
As well as Ameriquest Mortgage, the company also owned Argent Mortgage which made wholesale loans through mortgage brokers, and AMC Mortgage Services which carried out customer services activities for all ACCCH mortgages. Ameriquest closed in 2007, and the rest of the company was acquired by Citigroup.[1]