Benzinga's Top Downgrades (CEPH, ATHR, NBL, STJ)

Cephalon Inc CEPH was downgraded by Cowen from "outperform" to "neutral." CEPH's shares closed at $61.42 yesterday. Cephalon's PEG ratio is 1.33. Atheros Communications Inc ATHR was downgraded by Piper Jaffray from "overweight" to "neutral." ATHR's stock closed at $44.00 yesterday. Atheros Communications' trailing-twelve-month ROA is 7.48%. Credit Suisse downgraded Noble Energy Inc NBL from "outperform" to "neutral." NBL's shares closed at $84.40 yesterday. Noble Energy's PEG ratio is 3.03. St. Jude Medical Inc STJ was downgraded by RBC Capital from "outperform" to "sector perform." STJ's shares closed at $41.17 yesterday. STJ's trailing-twelve-month profit margin is 17.75%. More Analyst Ratings here