This is what is called a "ladder attack" in the stock market. Essentially you and a small group of people pick a low volume penny stock, and trade it back and

This is what is called a "ladder attack" in the stock market. Essentially you and a small group of people pick a low volume penny stock, and trade it back and forth amongst yourselves for more and more money each trade. Then other people see the fast rise and want to get in on the action. Volume picks up and the original traders cash out at a much higher price.