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  •  Dow Down0.29% Nasdaq Down0.03%
    Upgrades & Downgrades History
    UPGRADES & DOWNGRADES HISTORY 
    DateResearch FirmActionFromTo
    8-Aug-13NeedhamInitiatedHold
    22-Apr-13WallachBethInitiatedHold
    9-Apr-13MizuhoUpgradeNeutralBuy
    10-Jul-12Summer Street ResearchDowngradeBuyNeutral
    8-May-12MizuhoDowngradeBuyNeutral
    13-Apr-12OppenheimerInitiatedPerform
    3-Apr-12MizuhoInitiatedBuy
    3-Jan-12Summer Street ResearchUpgradeNeutralBuy
    14-Jun-11Canaccord GenuityInitiatedHold
    16-Dec-10BioLogic Equity ResearchDowngradeHoldSell
    5-Nov-10BioLogic Equity ResearchUpgradeSellHold
    6-Oct-10BrigantineInitiatedBuy
    25-Jun-10BioLogic Equity ResearchInitiatedSell
    25-Aug-09Leerink SwannInitiatedMkt Perform
    12-Mar-09Ladenburg ThalmannInitiatedBuy
    11-Mar-09Ladenburg ThalmannInitiatedBuy
    2-Oct-08Piper JaffrayInitiatedBuy
    4-Sep-08Lazard CapitalInitiatedBuy
    26-Mar-08Cowen & CoInitiatedOutperform
    26-Mar-08JP MorganInitiatedOverweight

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