Dialog Semiconductor plunges after analyst warns Apple may use fewer of its chips

Dialog Semiconductor shares fell by as much as 16% on Tuesday after an analyst warned that Apple may use fewer of the company's chips in the iPhone. 
Karsten Iltgen, an analyst at Bankhaus Lampe, said in a note that there is "strong evidence" Apple is working on its own power-management integrated circuits, according to Bloomberg. About 80 engineers at Apple are working on chips for use as soon as 2019, he said, citing unnamed industry sources. He downgraded the stock to "sell" from "h