The Commission shall have general supervisory powers with respect to all state associations, state savings banks and their holding companies, foreign savings institutions transacting business in the Commonwealth, savings institution holding companies whose principal place of business is located in the Commonwealth, service corporations that are owned or controlled by one or more state savings banks, service corporations the principal offices of which are located in the Commonwealth or that are owned or controlled by one or more state associations, and any other person who is subject to the provisions of this chapter.