Pre-market Movers: Facebook Inc (NASDAQ:FB), Weibo Corp (NASDAQ:WB), GT Advanced Technologies Inc (NASDAQ:GTAT), Sirius XM Holdings (NASDAQ:SIRI)

Facebook Inc (NASDAQ:FB) stock has been upgraded to “outperform” with an $87 price target, Credit Suisse said Monday. Facebook Inc (NASDAQ:FB) stock opened today at $62.75 and is currently trading at $62.93. FB stock showed a positive weekly performance of 4.63%.

Weibo Corp (ADR) (NASDAQ:WB) is a Chinese micro blogging site, which is owned by the Chinese company SINA Corp (NASDAQ:SINA). Though Weibo rocked the market debut but it has been reporting losses for the past three years. This company has had soaring profits to boast off recently and still is enjoying the limelight. The success story of Weibo is surely attractive and compelling. Weibo Corp (ADR) (NASDAQ:WB) stock opened at $24.00, in current trading session and currently is at $23.44, by gaining 3.67%.The 52 week range of $16.26-$24.48.Company’s market capitalization is $4.68 billion.

GT Advanced Technologies (NASDAQ:GTAT) has been given a consensus rating of “Buy” by the nine ratings firms that are presently covering the company, American Banking News reports. One analyst has rated the stock with a hold recommendation and six have given a buy recommendation to the company.GT Advanced Technologies Inc (NASDAQ:GTAT) stock is currently trading at $16.92.The EPS of the stock is -0.07. Company’s market capitalization is $2.27 billion.

Sirius XM Holdings Inc. (NASDAQ:SIRI) said it will offer the most comprehensive radio coverage available for the 2014 NBA Playoffs, featuring live play-by-play of every game, plus special programming on SiriusXM NBA Radio, channel 217.Sirius XM Holdings Inc. (NASDAQ:SIRI) stock opened the session at $3.20, and now is at $3.19. The 52 week range of the SIRI stock remained $2.98-$4.18 and the day range was $3.19-$3.20.