When the boss talks you're supposed to listen, or at least pretend to, right? Well, the boss has plenty to say about the stock market these days--mostly that it's too high--so pay attention. After all, the top dog must have known something to earn that office with a view.
What do corporate chiefs know about the market? Individually, very little. Star honchos like Jack Welch at General Electric and Bill Gates at Microsoft can't time the Dow any better than the Beardstown Ladies. But they clearly know more about their own companies than anyone on Wall Street. So their actions as...