Insider Trading

What happened was people who worked for the company gets information that their stocks ae going down. Once they know that it will go down and they tell others about it, they would sell their stock and miss a loss of profit when the stock does go down. That is why its illegal and is insider trading. Information that shouldn't be given out but is, like the Martha Stewart case, she had insider information about a company that was going out of business and she sold her shares before it closed down.