Founded in 1987, PlainsCapital Corporation is a Dallas-based bank holding company whose family of companies includes PlainsCapital Bank, the No. 3 Dallas-based regional commercial bank with $6.6 billion in assets; PrimeLending, the No. 1 residential mortgage lender nationwide in 2011, and FirstSouthwest, the No. 1 financial advisory firm nationwide in 2011. PlainsCapital employs 3,400 people...