Apple races past $4 trillion market value as latest models revitalize iPhone sales

Apple's shares have gained about 13% since the new launches on September 9, in a remarkable turnaround that pushed the stock into positive territory for the first time this year. "The iPhone accounts for over half of Apple's profit and revenue and the more phones they can get into the hands of people, the more they can drive people into their ecosystem," said Chris Zaccarelli, chief investment officer for Northlight Asset Management, ahead of the milestone. Apple shares had struggled earlier this year on concerns over tough competition in China and uncertainties around how the company would navigate high U.S. tariffs on Asian economies such as China and India, its major manufacturing hubs.