Shares of Skyworks Solutions slid, after the Apple supplier said tougher competition for the iPhone maker's semiconductor business would cut into sales. Apple is the company's largest customer. Late Wednesday,

The last couple of years have been challenging as the competitive landscape has intensified, says the company’s chief financial officer.

Apple ( AAPL) supplier Skyworks Solutions ( SWKS) saw its stock drop nearly 25% Thursday as the semiconductor firm said that it's losing business with the iPhone maker to one of its competitors, which analysts believe to be Broadcom ( AVGO ).

Apple shares rose 2% Friday morning, after the company reported stronger-than-expected earnings. Net income rose to $36.3 billion, topping analysts' estimates, as did earnings per share. iPhone sales fell nearly 1% on the year to $69.