The firm is upgrading Apple from Neutral to Buy, and has given the company a $540 price target. This price target suggests a 20% increase from the stocks current price of $428.35. BTIG had downgraded Apple to Neutral last April when the stock price was $633.68.
http://www.dividend.com/news/2013/btig-upgrades-apple-to-buy-aapl/
This analyst called it right when Apple was in decline, before everyone else. So I am more inclined to listen this time...