Major Gainers and Losers on August 31; ESL, FB, MDVN, LLNW, AUQ, ZUMZ

Shares of Esterline Technologies Corp. (NYSE: ESL), a manufacturing company serving aerospace and defense customers, surged in trading on Friday.

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Major Gainers and Losers on August 30; SRPT, CIEN, SHLD, VC, TGT, FB

Shares of Sarepta Therapeutics Inc. (NASDAQ: SRPT), a biopharmaceutical company focused on rapidly advancing the development of its disease-modifying Duchenne muscular dystrophy drug candidates, surged in trading today.

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EMarketer Lowers Facebook’s 2012 Revenue Estimate (FB)

Ever since social networking giant Facebook Inc. (NASDAQ: FB) completed its much-hyped IPO in May this year, there has been increasing concern over how the company will boost its advertising revenue growth. The latest to raise concerns over FB’s advertising revenue growth is research firm EMarketer.

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Major Gainers and Losers on August 29; YELP, ZNGA, JOSB, TFM, FB, JOY, HNZ

Shares of Yelp Inc. (NYSE: YELP), a San Francisco, California-based company connecting people with local businesses, surged in trading today.

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Social Media Stocks on Watch; Zynga Inc. (ZNGA), Facebook Inc. (FB), Groupon Inc. (GRPN), LinkedIn Corp. (LNKD), Renren Inc. (RENN), SINA Corp.

Shares of Zynga Inc. (NASDAQ: ZNGA), a social gaming company engaged in the development, marketing and operation of online social games as live services played over the Internet and on social networking sites and mobile platforms, rose marginally in trading on Friday.

Continue reading Social Media Stocks on Watch; Zynga Inc. (ZNGA), Facebook Inc. (FB), Groupon Inc. (GRPN), LinkedIn Corp. (LNKD), Renren Inc. (RENN), SINA Corp.

Facebook Co-Founder Moskovitz Sells Small Portion of His Stake in the Company (FB, ZNGA)

One of Facebook Inc.’s (NASDAQ: FB) co-founders, Dustin Moskovitz, sold a small portion of his stake in the social network, according to a filing.

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Zynga Offers Stock options to All Employees, Attention Shifts to Mobile Platforms and Tablets (ZNGA)

According to a report published in the Wall Street Journal, a person close to Zynga’s (NASDAQ: ZNGA) matters has said that company’s Chief executive; Mark Pincus has issued stock options to every employee of the company.

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Facebook Shares Tumble after Quarterly Results (FB)

Facebook shares (NASDAQ: FB), after creating all the market buzz during its IPO in May, promising a spectacular growth story, tumbled on Thursday as company reported earnings that were in line with expectations but nowhere near the potential it projected.

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