NVIDIA Corporation (NASDAQ:

) was downgraded by ThinkEquity from "buy" to "hold." NVDA's shares closed at $25.67 on Friday. NVIDIA's PEG ratio is 2.84. Analysts at Citigroup downgraded Corning Incorporated (NYSE:

) from “buy” to “hold.” GLW's stock closed at $23.37 on Friday. Corning's trailing-twelve-month ROA is 3.78%. JP Morgan downgraded Sanderson Farms Inc (NASDAQ:

) from “neutral” to “underweight.” SAFM's shares closed at $42.99 on Friday. Sanderson Farms' PEG ratio is 2.96. Analysts at Goldman downgraded CB Richard Ellis Group Inc (NYSE:

) from “buy” to “neutral.” CBG's shares closed at $23.95 on Friday. CBG's trailing-twelve-month profit margin is 3.56%.