Winners:

Peabody Energy Corp. (NYSE:BTU) is up 5.09% today after being upgraded to “Buy” from “Neutral” by Goldman Sachs (NYSE:GS).

Monster Worldwide Inc. (NYSE:MWW) shares are up 7% after UBS (NYSE:UBS) analysts raised their rating from “Neutral” to “Buy”.

Cognizant Technology Solutions Corp. (NASDAQ:CTSH) shares are up 6.11% after nonprofit NPower said in a press release that Cognizant would financially support NPower services that provide free information technology training and career development to disadvantage youths and nonprofits.

Tower Bancorp (NASDAQ:TOBC) shares shot up 31.57%, mostly in pre-market trading, after announcing late Monday they would be acquired by Susquehanna Bancshares (NASDAQ:SUSQ).

Research In Motion Ltd. (NASDAQ:RIMM) shares gained 10.27% today after a five-day drop of 27% as investors swooped in while prices were low amid hopes they might climb after future developments.

Whole Foods Markets Inc. (NASDAQ:WFM) shares are up 6.17% after BMO Capital Markets raised its recommendation on the health food chain from “Perform” to “Outperform”, also citing that the recent decline meant stocks were well-priced for buyers.

Tesoro Corp. (NYSE:TSO) shares are up 4.19% along with the S&P 500 energy sector.

Baidu.com Inc. (NASDAQ:BIDU) shares are up 7.97% after the company said in a press release that it would be teaming up with China Real Estate Information Corp. (NASDAQ:CRIC), allowing the company exclusive rights to sell Baidu’s real-estate keyword advertising product.

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Losers:

Prospect Capital Corp. (NASDAQ:PSEC) shares are down 5.06% after pricing a public offering of 10 million shares at $10.15, significantly below the $10.68 prices as of close Monday.

Walgreen Co. (NYSE:WAG) shares have dropped 4.21% after ending their contract with Express Scripts‘ (NASDAQ:ESRX) prescription service.

Motorola (NYSE:MMI) shares are down 2.86% after being downgraded by Credit Suisse (NYSE:CS) from “Outperform” to “Underperform”.

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