Piper Jaffray lowered its rating for SBUX from "overweight" to "neutral" following Tuesday's close. The firm based much of this downgrade on a lack of confidence that Starbucks can grow in its greatly important domestic market. "We believe the stock is range bound at best until U.S. trends improve," analyst Nicole Regan wrote in a note to clients. "Our perspective is that there are issues around inconsistent results, credibility of guidance, and management transitions."