Needham & Co. analyst Charlie Wolf has issued a slight downgrade to Apple stock, dropping his rating from "Strong Buy" to simply "Buy." Apple's share price has grown less than 15 percent over a recent $200 price target, he notes, meeting "admittedly arbitrary" criteria for a lower valuation. Also bearing blame is said to be the economy, which remains in recession and may be the ultimate arbiter of whether Apple makes any gains during the holiday season.