Citi Research is starting coverage of Apple shares with a $675 price target. An investor memo produced by the firm notes that the target implies a return of about 20 percent. The memo also describes a long stock slide that began on September 21st as a "correction," one in line with other slides in Apple's history, as well as the history of its competition. Citi's target is nevertheless about 11 percent below Wall Street consensus, something attributed to risks "increasingly coming into focus."