It's Tim Cook's last day as Apple CEO. Investors are $4 trillion richer because of him. - Yahoo Finance

Tim Cook turned Apple into a $4 trillion behemoth during his 15 years as CEO.

Apple's (AAPL) Tim Cook is stepping down as CEO today, turning over the role to senior vice president of hardware engineering John Ternus.
Cook will stay on at Apple as its executive chair and "assi…

წყარო: Yahoo Entertainment