NASDAQ Unusual Volume: Sirius XM Holdings (NASDAQ:SIRI), Nuance Communications (NASDAQ:NUAN), Raptor Pharmaceutical (NASDAQ:RPTP), MagneGas Corporation (NASDAQ:MNGA)

Sirius XM Holdings Inc. (NASDAQ:SIRI) announced on 14 march that it will resume its share buyback program. In February, the company said it had more than $2.2 billion remaining under its repurchase authorization. Sirius XM Holdings Inc. (NASDAQ:SIRI) stock opened at $3.36 in last session, and closed at $3.44, while the day range of Sirius XM Holdings Inc. (NASDAQ:SIRI) stock is $3.35 – $3.52. The stock showed a positive weekly performance of -1.99%.

Shares of Nuance Communications (NASDAQ:NUAN) were the target of some unusual options trading activity on Friday. Investors acquired 20,746 call options on the stock, AnalystRatings.Net reports. This is an increase of approximately 575% compared to the average volume of 3,075 call options. Nuance Communications Inc. (NASDAQ:NUAN) stock opened at $14.93 in last session, and closed at $15.95 by gaining 6.69%. The 52 week range of $13.00 – $23.38. Company’s market capitalization is $5.02 billion.

Raptor Pharmaceutical Corp. (NASDAQ:RPTP) reported financial outcome for the fourth quarter and year finished December 31, 2013 and provided an update on recent corporate developments.
Raptor Pharmaceutical Corp. (NASDAQ:RPTP) stock decreased -23.94% and finished the last session at $11.25. The EPS of the stock remained -1.39. Company’s market capitalization is $674.60 million.

MagneGas Corporation, www.magnegas.com (NASDAQ:MNGA), a leading technology company that counts among its inventions a technology that converts liquid waste into a hydrogen-based fuel, will be exhibiting and its CEO will be moderating a panel called “Making it Work: How Digester Designs Evolve to Meet Unique Operating Conditions,” at the 7th Annual International Biomass Conference & Expo. MagneGas Corporation (NASDAQ:MNGA) stock opened the session at $0.86, and closed the session at $1.05. The 52 week range of the MagneGas Corporation (NASDAQ:MNGA) stock remained $0.40 – $2.36 and the day range was $0.85 – $1.18.

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