Old Second isn't a thrift shop, but it does cater to the thrifty. Old Second Bancorp is the holding company for Old Second National Bank, which operates about 30 branches in the Chicago metropolitan area. Serving consumers and business clients, the bank provides checking and savings accounts, credit and debit cards, CDs, mortgages, and loans, as well as trust, retirement, and wealth management services. The company formed River Street Advisors in 2010 to provide investment management and advisory services. Another subsidiary, Old Second Affordable Housing Fund, provides home-buying assistance to lower income customers.