Insider information (also known as material nonpublic information or MNPI) is confidential data about a publicly-traded company that, if released to the public, would likely have a significant impact on its stock price. Think of it as the ultimate “spoiler alert” for the financial markets. This isn't just a vague rumor or a gut feeling; it's specific, credible information that has not been shared with the public. Using this information to buy or sell securities, or tipping off others to do so, is an illegal activity known as insider trading. Regulators on both sides of the Atlantic, like the Securities and Exchange Commission (SEC) in the United States and the European Securities and Markets Authority (ESMA) in Europe, take this very seriously. The principle is simple: markets should be a level playing field. When insiders use a secret information advantage to profit, it erodes trust and fairness, turning the market into a rigged game.
To qualify as insider information, the data must generally meet two criteria: it must be material (important enough to influence an investor's decision) and nonpublic (not legally available to the general public). While there's no exhaustive list, the following are classic examples:
The definition of an “insider” is much broader than you might think. It’s not just the people in the boardroom. The net is cast wide to include anyone who has a fiduciary duty or a duty of trust and confidence to the company.
This is the most obvious group. It includes directors, senior officers, and any employee with access to sensitive information. Large shareholders (typically those owning more than 10% of a company's shares) are also considered insiders.
These are individuals or firms that work with a company and are given access to confidential information to do their jobs. This group includes:
This is where the average person must be most careful. A “tippee” is someone who receives insider information from an insider (the “tipper”). If you receive a hot stock tip from a friend who works at a company, and you know (or should reasonably know) that the information is confidential, you become an insider, too! Trading on that tip is just as illegal as if you were the CEO. The old saying, “loose lips sink ships,” is a perfect warning here.
For a value investing practitioner, the entire concept of insider information is a dangerous distraction. The goal of a value investor isn't to get a secret tip; it's to develop a superior understanding of a business through public information that everyone else ignores or misinterprets. The true edge comes from diligent fundamental analysis:
In short, while others might chase the thrill of a “hot tip,” a wise investor knows that sustainable wealth is built on a foundation of hard work, independent analysis, and ethical conduct—not on a whisper that could cost you your freedom and your fortune.