Pump and dump groups manipulate the price and the volume of a coin — generally lesser known, lower cap coins. They initially pump the price in a short amount of time by coordinating the purchase of large amounts and subsequently they sell it dumping the price. The caveat is that these groups have different levels and the higher levels communicate which coin is getting pumped to the lower levels only when they already bought it. The lower levels are the ones that are getting dumped on.
Home pump and dump schemes
