Benzinga's Top Downgrades

eResearch Technology Inc ERT was downgraded by Benchmark Company from "buy" to "hold." ERT's shares closed at $6.43 yesterday. ERT's trailing-twelve-month profit margin is 6.97%. Deutsche bank downgraded Teekay Tankers Ltd TNK from “buy” to “hold.” TNK's stock closed at $8.39 yesterday. Teekay Tankers' PEG ratio is 3.55. Jefferies & Company downgraded Wal-Mart Stores Inc WMT from “buy” to “hold.” WMT's shares closed at $52.62 yesterday. Wal-Mart's trailing-twelve-month profit margin is 3.87%. Oppenheimer downgraded Teva Pharmaceutical Industries Limited TEVA from “outperform” to “perform.” TEVA's shares closed at $43.76 yesterday. TEVA's trailing-twelve-month ROA is 7.02%.