Some corporate executives can't be relied on to look after the interests of workers or shareholders, as the scandals, from Enron to Tyco to WorldCom, have made clear. But you can trust the top dogs to look after their own pocketbooks. So when groups of execs spend their cash on shares of the companies they run, it's a reliable sign that they expect good things down the road--and it may be time for you to tag along.
Watching insiders became even more useful this month, thanks to new disclosure rules requiring top corporate officers, board members and majority shareholders to report...