(FILES) In this file photo taken on September 14, 2016 the Apple logo at the entrance to the Fifth Ave. Apple store is seen in New York. - Shares of Apple plunged at the start of trading on January 3, 2019, weighing on the broader market after the tech giant cut its sales forecast due to weakness in China.The tech-rich Nasdaq Composite Index fell 1.1 percent to 6,593.58, with Apple shedding 8.8 percent.The Dow Jones Industrial Average tumbled 1.0 percent to 23,106.83, while the broad-based S&P 500 slid 0.7 percent to 2,492.77. (Photo by Don EMMERT / AFP)