Making noteworthy gains on the market this Tuesday are bluebird bio Inc (NASDAQ:BLUE), Mazor Robotics Ltd – ADR (NASDAQ:MZOR) and Celladon Corp (NASDAQ:CLDN). CONN’S, Inc. (NASDAQ:CONN), Allied Nevada Gold Corp. (NYSEMKT:ANV) and UTi Worldwide Inc. (NASDAQ:UTIW), on the other hand, are taking tumbles.

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Celladon

bluebird bio Soars

Biotech company bluebird bio Inc (NASDAQ:BLUE) soared +70.62% early in the day after announcing that early research into its treatment for a genetic blood condition has showed promise. The stock has gained more than +100% over the past five days – much to the benefit of billionaire Leon Cooperman, who initiated a position in BLUE in Q3.

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Mazor Robotics Ltd – ADR (NASDAQ:MZOR) climbed +16.25% on news of purchase orders for three more of its Renaissance Systems. The Israel-based company, a George Soros holding, has rallied +29.25% over the past month and +33.02% in the past week alone.

Celladon Corp (NASDAQ:CLDN) surged +15.82% today. The biotech stock has gained +95.35% since its late January IPO. It’s proven a strong bet for Thomas Steyer’s Farallon Capital, which initiated a stake in the first quarter of the year and as of Q3 holds 200,000 CLDN shares.

CONN’s Inc. Plunges

CONN’S, Inc. (NASDAQ:CONN) plunged -42.52% in the wake of its Q3 results and withdrawn 2015 forecast. The home appliances and consumer electronics retailer also announced the exit of its CFO. David Einhorn picked up a stake in the company in Q1 and as of Q3 holds 3.56 million CONN shares. He’s likely posting a loss on this one, giving the stock’s -75% decline YTD.

Allied Nevada Gold Corp. (NYSEMKT:ANV) tumbled -36.6% after raising $21.5 million in a heavily discounted sale of shares and stock warrants. The gold and silver producer has fallen -72.27% over the past year. John Paulson is a long-time ANV shareholder, and George Soros bought into the company in Q2.

UTi Worldwide Inc. (NASDAQ:UTIW) dipped -12.73% after posting weaker than expected results and announcing the resignation of its CEO. The supply chain solutions company, a Tiger Global pick, is down -35.08% YTD, though it has rebounded a slight +1.97% over the past month.

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