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Pump and Dump
pump and dump
Pump and dump.
In a pump and dump scheme, a scam artist manipulates the stock market by buying shares of a low-cost stock and then artificially inflating the price by spreading rumors, typically using the Internet and phone, that the stock is about to hit new highs.
Investors who fall victim to the get-rich-quick scheme begin buying up shares, and the increased demand drives up the price. At the peak of the market, the scammer sells out at a profit, shuts down the rumor mill, and disappears. The price of the stock invariably drops dramatically and the investors who got caught in the scam lose their money.