AGA Medical, Halliburton, Ista, Quicksilver: U.S. Equity Movers

AGA Medical, Halliburton, Ista, Quicksilver: U.S. Equity Movers
Shares of the following companies are having unusual moves in U.S. trading. Stock symbols are in parentheses, and prices are as of 10 a.m. in New York.
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Pfizer, Biocon team up on diabetes drugs
Pfizer Inc. entered the $ 40 billion diabetes market in a big way today, announcing an agreement to pay Indian drug company Biocon up to $ 350 million for the rights to market its four insulin products
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