Noun
buying or selling corporate stock by a corporate officer or other insider on the basis of information that has not been made public and is supposed to remain confidential
Source: WordNetInsider trading is hard to prove. To be convicted, a person must have bought or sold a stock based on material information that is both unknown to the general public and likely to have had an important effect on a company's stock price. Alex Berenson
Unfortunately, from what I can see from my vantage point as the U.S. Attorney here, illegal insider trading is rampant and may even be on the rise. Preet Bharara
If companies tell us more, insider trading will be worth less. James Surowiecki
Insider trading tells everybody at precisely the wrong time that everything is rigged, and only people who have a billion dollars and have access to and are best friends with people who are on boards of directors of major companies - they're the only ones who can make a true buck. Preet Bharara
Tiptoeing on a tightrope past insider trading laws may be deft and clever, but it doesn't make it right. Andrew Ross Sorkin
Securities fraud generally and insider trading in particular should be eminently deterrable crimes. Preet Bharara