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,

Skyworks sinks after Apple reduces RF component orders, triggering analyst downgrades and concerns over lost revenue

Skyworks’ stock could see its worst day in more than four decades, with analysts noting that Broadcom seems to have gotten in on the action for a lucrative iPhone socket.