(stock market) a series of transactions in which the speculator increases his holdings by using the rising market value of those holdings as margin for further purchases1
a polyhedron having a polygonal base and triangular sides with a common vertex1
increase rapidly and progressively step by step on a broad base1
arrange or build up as if on the base of a pyramid1
use or deal in (as of stock or commercial transaction) in a pyramid deal1
enlarge one's holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts1