Movers roundup: NPS Pharmaceuticals, Blue Nile

NEW YORK (AP)--Shares of NPS Pharmaceuticals Inc. tumbled Friday after partner GlaxoSmithKline ended development of a potential osteoporosis treatment, citing its ineffectiveness.

NEW YORK (AP)--Shares of Blue Nile Inc. slipped on Friday, after an analyst downgraded the stock and said weak spending on luxury items is hurting the Seattle-based online jewelry retailer.

NEW YORK (AP)--Shares of Savient Pharmaceuticals fell Friday after the company said it is still searching for a partner on its lead drug candidate, the gout treatment Puricase.

NEW YORK (AP)--International Game Technology's stock climbed Friday as a Goldman Sachs analyst said the company could benefit from a potential restructuring and increasing state budget deficits.

NEW YORK (AP)--A deteriorating business jet market combined with rising doubts about the size of the Pentagon's budget led an analyst Friday to downgrade military contractor General Dynamics Corp.'s shares to "Neutral" from "Buy."

NEW YORK (AP)--Shares of Terra Industries Inc., which makes nitrogen for fertilizer and for industrial uses, tumbled Friday after an analyst downgraded its shares on concerns that a recent drop in prices for urea, a nitrogen-containing substance, could last into next year.

NEW YORK (AP)--Shares of CF Industries Holdings Inc., which makes nitrogen and phosphate fertilizers, plummeted Friday after an analyst downgraded its shares on concerns that a recent drop in prices for urea, a nitrogen-containing substance, could last into next year.

BOSTON (AP)--Shares of First Marblehead Corp. continued to slide Friday as an analyst removed his "Sell" rating on the stock, but said the student-loan services provider faces a tough economic environment in which to restructure its flagging business and conserve cash.