http://www.addictinginfo.org/2015/12/11/donald-trump-frantically-trying-to-scrub-mob-ties-from-internet-video/
"Sater pleaded guilty in 1998 to one count of racketeering for his role in a $40 million stock fraud scheme involving the Genovese and Bonanno crime families, according to court records. Prosecutors called the operation a pump-and-dump scheme, in which insiders manipulate the price of obscure stocks and then sell them to hapless investors at inflated prices."