Определение pump and dump в Английский Язык Английский Язык словарь
A form of financial fraud where the fraudster buys stocks cheaply, generates artificial excitement about those stocks to create a temporary price increase, then sells the stocks before the price goes back down
an illegal scheme for making money by manipulating stock prices; the schemer persuades other people to buy the stock and then sells it himself as soon as the price of the stock rises