Despite the debut of a slew of new Mac products in June, Apple's PC sales dipped in the second quarter of 2017, though greater losses from competitors helped buoy the tech giant's overall market share, according to estimates from market research firm Gartner. 

According to Gartner's latest statistics, published on Wednesday, Apple rose one spot to end the quarter in fourth place with 4.24 million units shipped. The performance was down 0.4 percent compared to last year, when the company sold 4.25 million Macs. For the quarter, Apple captured 6.9 percent of the worldwide market, up from 6.7 percent in the second quarter of 2016.