As used in this subchapter:
(1) “Bank holding company” means a company, as defined by the federal Bank Holding Company Act of 1956 (12 U.S.C. § 1841 et seq.), which is or becomes a bank holding company within the provisions of the federal act including, without limitation, its provisions for determining what constitutes control.
(2) “Institution” means a national bank whose principal place of business is located in Delaware or a Delaware-chartered bank or bank and trust company.
(3) “Delaware bank holding company” means a bank holding company with bank subsidiaries whose operations are principally conducted in Delaware. For the purposes of this subchapter, the operations of a bank holding company's subsidiaries are principally located in this State if the total deposits of all such subsidiaries in this State are greater than in any other state.