Orexigen Therapeutics, Inc. (NASDAQ:OREX), Uranium Energy Corp. (NYSEMKT:UEC) and Newcastle Investment Corporation (NYSE:NCT) are off to a strong start this Monday and are among today’s top-gaining stocks. In the red today are KiOR Inc (OTCMKTS:KIOR), Paramount Gold and Silver Corp. (NYSEMKT:PZG) and Commscope Holding Company Inc (NASDAQ:COMM).

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Orexigen Soars

Orexigen Therapeutics, Inc. (NASDAQ:OREX) surged +26.88% after reporting better than expected third quarter results this morning. In the Farallon Capital portfolio since the first quarter of 2013, OREX has climbed +41.98% over the past month.

[drizzle]The share price of Uranium Energy Corp. (NYSEMKT:UEC) climbed +12.79%, putting its five-day gain at +65.22%. The exploration-stage company, a new Q2 buy for billionaire investor George Soros, is still down -5% year-to-date.

Real estate investment and finance company Newcastle Investment Corporation (NYSE:NCT) gained +9.74% early in the day, though it’s still trading quite close to its 52-week low of $4.00. Leon Cooperman initiated a position in the firm in the second quarter of 2012, and as of the second quarter of this year, he holds 11.59 million NCT shares.

KiOR Inc. Plummets

KiOR Inc (OTCMKTS:KIOR) plunged -64.96% on the heels of its bankruptcy filing, announced today. The renewable fuel producer, a new second quarter Soros buy, has declined -98.21% this year.

Paramount Gold and Silver Corp. (NYSEMKT:PZG) fell -9.6% despite the announcement of strong results from one of its Mexico projects. Yet another new Q2 Soros pick, PZG has fallen -38.72% over the past three months.

The share price of Commscope Holding Company Inc (NASDAQ:COMM) fell -9.16%, though it’s still up for the year. The connectivity solutions provider has been in George Soros’ investment portfolio since the first quarter of the year, and as of Q2, he holds 840,000 COMM shares.

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