The Securities and Exchange Act of 1934 banned insider trading but left it up to the Securities and Exchange Commission and the courts to define it. Which they have -- in recent decades so broadly that confidential information [is now Wall Street's] coin of the realm." If a CEO tells his golf buddy that his company is being taken over, and his buddy makes a killing on that information, no problem. If his buddy leaks the information to a hedge fund manager and doesn't say where it came from, the hedge fund manager can also use the information to make a bundle. CEOs and other top executives ... routinely use their own inside knowledge of when their companies will buy back large numbers of shares from the public -- thereby pumping up share prices -- in order to time their own personal stock transactions. That didn't used to be legal. Until 1981, the Securities and Exchange Commission required companies to publicly disclose the amount and timing of their buybacks. But Ronald Reagan's SEC removed those restrictions. Then, George W. Bush's SEC allowed top executives, even though technically company "insiders" ... to quietly cash in their stock options without public disclosure. Now it's normal practice. Many CEOs are making vast fortunes not because they're good at managing their corporations but because they're good at using insider information.