Pfizer Shares Plummet on Loss of a Promising Heart Drug
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PfizerÂs stock fell almost 11 percent on Monday in a trading frenzy that shaved more than $21 billion off its market value.
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New prescriptions for Pfizer Inc.'s  arthritis drug Celebrex fell 56 percent last week after the  company released data showing the drug may increase the risk of  heart attacks and strokes, according to Verispan, a market  research company.
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Pfizer Inc.&#39;s shares fell as much as 6.2 percent on Thursday on a Canadian newspaper report linking its arthritis drug Celebrex to 14 deaths.
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Stocks fell on Friday, led by  pharmaceutical shares after a U.S. health official raised  concerns about drug safety and a drop in chip-equipment makers  following a ratings downgrade by Goldman Sachs.
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Drug makers failed to bounce back from a Thursday slide, with many drug stocks closing down Friday as drug giant Pfizer Inc. and generic drug challenger Alpharma Inc.
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Stocks dropped in very heavy trading Friday as fresh concerns about pharmaceuticals, coming after Pfizer Inc. announced a troublesome health study of its Celebrex drug, overshadowed news of subdued growth in consumer prices and inflation.
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The medical device maker reported a third-quarter loss of $272 million on charges related to acquisitions and asset sales, as the companyâs top-selling stent continued to slump.
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Shares in Pfizer Inc fell 12 percent in  Europe on Monday after the world's biggest drugmaker scrapped  development of its most important experimental medicine.
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Shares in Pfizer Inc  fell around 14 percent in European and pre-opening U.S. trade on Monday after the world's biggest drugmaker scrapped development of its most important experimental medicine.
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Global drugs giant Pfizer sees profits fall after a drop in worldwide sales of cholesterol drug Lipitor.
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U.S. stocks fell on Friday dragged  down by a string of negative reports from drug makers, with  Pfizer Inc. PFE.N, AstraZeneca Plc. AZN.L and Eli Lilly and  Co. LLY.N delivering bad news about key products.
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Pfizer Inc.&#39;s (PFE.N: Quote, Profile, Research) shares fell as much as 6.2 percent on Thursday on a Canadian newspaper report linking its arthritis drug Celebrex to 14 deaths.
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Shares in AstraZeneca tumbled today after a key drug it has developed in the fight against strokes was provisionally rejected by US regulators.
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Pfizer yesterday said new data showed the painkiller, Celebrex, more than doubled the risk of heart attacks, sending the US drugmaker&#39;s shares plunging.
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Pfizer stock closed at $25.95, rising 4 percent. The stock began a rally earlier in the week on word that the US Food and Drug Administration had issued a warning of potential heart problems for naproxen.
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Shares of Pfizer (PFE:NYSE - news - research) dropped Thursday after a Canadian newspaper reported that the arthritis drug Celebrex is &quot;suspected of contributing to at least 14 deaths.
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Pfizer is expected to see a sharp fall in sales of one of its best-selling drugs after a warning by US regulators.