Analysts at Piper Jaffray downgraded Windstream (NASDAQ: WIN ) from “neutral” to “underweight.” Windstream's shares closed at $8.31 yesterday. Windstream's trailing-twelve-month profit margin is 4.32%. Analysts at Deutsche Bank downgraded Rowan Companies plc (NYSE: RDC ) from “buy” to “hold.” Rowan Companies' shares closed at $30.97 yesterday. Rowan Companies'