•    Research In Motion (NASDAQ:RIMM) has purchased Scoreloop, a Munich-based social gaming company. The acquisition will enhance the Blackberry maker’s messenger application as it looks to compete against Apple (NASDAQ:AAPL) and other companies.

•    Oil company Exxon Mobil Corp (NYSE:XOM) said it has discovered an oil field in the Gulf of Mexico which may generate over 700 million barrels of oil

•    Shares of Colo-based Molycorp, Inc (NYSE:MCP) fell more than 9% after the company announced plans to raise around $200 million from the market via a debt offering

•    Canaccord Genuity raised natural-gas producer Cabot Oil & Gas Corp (NYSE:COG) from “Hold” rating to “Buy” rating

•    Drilling and construction services provider Layne Christensen Co. (NASDAQ:LAYN) posted its first quarter earnings results beating analysts’ estimates

•    Share prices of Drug developer Pharmasset Inc. (NASDAQ:VRUS) spiked up 10.38% after the company said it was expanding trials for a potential treatment of Hepatitis C

•    Share prices of Ulta Salon, Cosmetics & Fragrance Inc. (NASDAQ:ULTA) gained 12.68% on Wednesday’s trade after the maker of beauty products posted better than expected first quarter earnings results

•    Analysts at Dahlman Rose upgraded ENSCO PLC (NYSE:ESV) to “Buy” rating from “Hold” rating with a target price of $70.00

•    Analysts at Keybanc upgraded G-III Apparel (NASDAQ:GIII) to “Buy” rating from “Hold” rating with a target price of $42.00

•    Analysts at Goldman Sachs (NYSE:GS) upgraded Knight Capital Group Inc. (NYSE:KCG) to “Buy” rating from “Neutral” rating with a target price of $14.00

•    Analysts at CapitalOne Southcoast upgraded shares of Northern Oil & Gas, Inc. (AMEX:NOG) to “Strong Buy” rating from “Add” rating with a target price of $37.00

•    Analysts at Sidoti downgraded Stifel Financial Corp. (NYSE:SF) to “Neutral” rating from “Buy” rating
 
APPLE INC (AAPL): Free Stock Analysis Report
 
CABOT OIL & GAS (COG): Free Stock Analysis Report
 
ENSCO PLC (ESV): Free Stock Analysis Report
 
G-III APPAREL (GIII): Free Stock Analysis Report
 
GOLDMAN SACHS (GS): Free Stock Analysis Report
 
KNIGHT CAP GP (KCG): Free Stock Analysis Report
 
LAYNE CHRISTENS (LAYN): Free Stock Analysis Report
 
MOLYCORP INC (MCP): Free Stock Analysis Report
 
NORTHRN OIL&GAS (NOG): Free Stock Analysis Report
 
RESEARCH IN MOT (RIMM): Free Stock Analysis Report
 
STIFEL FINL (SF): Free Stock Analysis Report
 
ULTA SALON COSM (ULTA): Free Stock Analysis Report
 
PHARMASSET INC (VRUS): Free Stock Analysis Report
 
EXXON MOBIL CRP (XOM): Free Stock Analysis Report
 
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