Tim Cook CEO, Apple Tim Cook is the man behind the company with the world's largest market capitalization (more than $610 billion as of December 2016) and the most profitable business in America--Apple brought in more than $9 billion in net income in its recent quarter. He's a hugely influential player in technology, design, publishing, and entertainment. But 2016 presented some new challenges. In the spring Apple's revenue declined for the first time in 13 years; many fear that the iPhone, which makes up about 60% of the tech company's sales, has peaked. In September, the company announced that it removed the headphone jack out of its newest handset, a move that received mixed reviews.