oprah winfrey

Portfolio's best and worst CEOs

Portfolio.com recently released its list of the world's 20 best and 20 worst CEOs. Taken as a pair, the lists say a lot about American business, but...

Oprah: Room for one more TV network?

Oprah Winfrey, easily the most successful self-made business woman in the United States, has added one more piece to her empire with "OWN," the Oprah...