enlarge on

enlarge one's holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts

begun by Cheops around 2700 BC as royal tombs in ancient Egypt v enlarge one's holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts v use or deal in (as of stock or commercial transaction) in a pyramid deal v arrange or build up as if on the base of a pyramid v increase rapidly and progressively step by step on a broad base