When someone has privileged or sensitive non-public information about a company that could affect its share price once the information becomes public, they can use that information to either buy or sell stock at the expense of the people they sell to or buy from who don’t have this information. This is called insider trading and it’s illegal. Let’s say you work at a company and know that the company just lost a ton of money, even though the public thinks the company is doing great. If you sell  your stock to the unwitting public, that’s insider trading.

But what if you are just given the information and aren’t actually an “insider” at the company? This is often called “tipping,” and it’s still illegal for you to trade based on that privileged information because the effect is the same – if people think that it’s not safe to invest because they are going to be taken advantage of by sneaky insiders and their friends, they won’t buy stock, and that’s bad for everyone.

Tags: insider trading, SEC, tipping, trading