“Rockefeller Rich” still rolls off the tongue better, but Elon Musk can now be considered the wealthiest person who’s ever lived after Forbes’s new ranking. Forbes in a new calculation on Wednesday ...

Once upon a time, John D. Rockefeller defined what it meant to be rich. Now, Elon Musk has surpassed him. The world's most unpredictable billionaire has turned industries upside down to chase visions ...

On Sept. 29, 1916, it was front page news that a surge in Standard Oil's stock price likely made oil tycoon John D. Rockefeller America's first billionaire. More than a century later, the United ...