CBS CBS Corp

•    Monsanto Co. (NYSE:MON) reported its fiscal fourth-quarter loss of $0.22 cents a share, better than the Zacks Consensus Estimate of a loss of $0.27. Revenues rose 15.1% year-over-year to $2.25 billion from $1.95 billion

•    Reacting to news that Microsoft (NASDAQ:MSFT) is considering a bid for Yahoo (NASDAQ:YHOO), shares of the company gained 3.30% to close at $25.89

•    Share prices of lightning manufacture Acuity Brands Inc. (NYSE:AYI) increased 11.67% to close at $37.73 after the company posted a profitable fourth quarter results

•    Share prices Lufkin Industries Inc. (NASDAQ:LUFK) fell 8.79% during the early hours of the days trade after the company lowered its outlook for the third-quarter

•    Analysts at Citigroup upgraded shares of Acorda Therapeutics (NASDAQ:ACOR) to "Buy" rating from "Hold" rating

•    Analysts at Citi upgraded shares of Cbeyond Inc (NASDAQ:CBEY) to "Buy" rating from "Hold" rating

•    Analysts at Citigroup upgraded shares of CBS Corporation (NYSE:CBS) to "Buy" rating from "Hold" rating

•    Analysts at Credit Suisse upgraded shares of CTC Media (NASDAQ:CTCM) to "Neutral" rating from "Underperform" rating