The confidence game"Pump and dump" schemes, also known as "hype and dump manipulation," involve the touting of a company's stock (typically microcap companies) through false and misleading statements to the marketplace. After pumping the stock, fraudsters make huge profits by selling their cheap stock into the market.
Pump and dump schemes often occur on the Internet where it is common to see messages posted that urge readers to buy a stock quickly or to sell before the price goes down, or a telemarketer will call using the same sort of pitch. Often the promoters will claim to have "inside" information about an impending development or to use an "infallible" combination of economic and stock market data to pick stocks. In reality, they may be company insiders or paid promoters who stand to gain by selling their shares after the stock price is "pumped" up by the buying frenzy they create. Once these fraudsters "dump" their shares and stop hyping the stock, the price typically falls, and investors lose their money.