https://www.cnbc.com/2018/12/19/jefferies-joins-wall-street-in-cutting-iphone-expectations-but-says-services-still-make-apple-a-buy.html > Jefferies became the latest Wall Street firm to lower expectations for Apple's stock on weakness in the iPhone supply chain. > "It could get worse before it gets better," Jefferies analyst Timothy O'Shea said in a note Wednesday. "It appears that [Wall Street] estimates may still be too high."