Updated from 9:37 a.m. ESTDo you own the stock of a public corporation because of what the company does or because of the person at the top? Perhaps you look at Johnson & Johnson ( JNJ), and think, "This company makes things that are in my medicine cabinet, but that's neither here nor there. I really trust William Weldon." Maybe you see an article on Novartis ( NVS) and say to yourself, "The company's drugs might or might not be successful. I don't care that much. What matters is Daniel Vasella." Or, when you think about Tootsie Roll ( TR), you say, "I'm not sure people will be buying candy in the coming months, but that's irrelevant. Melvin Gordon has my admiration." Is this how you make most of your investing decisions? Probably not. For most investors, the choice to buy shares rests on the belief that a company, because of its products or services, is poised to be profitable, have growing revenue and see its stock price appreciate.