NEW YORK -- Tiffany ( TIF), the jeweler, is expected by analysts to report on Tuesday first-quarter earnings of 52 cents a share on sales of $855.1 million. United Natural Foods ( UNFI), a distributor of natural and organic foods to retailers in the U.S. and Canada, is forecast to post fiscal third-quarter earnings of 64 cents a share on revenue of $1.56 billion. 5 Dividend Stocks Getting Ready to Hike Payouts U.K. drugmaker AstraZeneca ( AZN) agreed to buy specialty pharmaceutical company Omthera ( OMTH) for $12.70 a share, or about $323 million, a premium of 88% to Omthera's closing price on Friday of $6.77. 5 Stocks Soaring on Unusual VolumeValeant Pharmaceuticals ( VRX), Canada's largest drugmaker, announced it has agreed to acquire eye-care company Bausch & Lomb for $8.7 billion. Valeant to Buy Bausch & Lomb -- Written by Joseph Woelfel >To contact the writer of this article, click here: Joseph Woelfel >To submit a news tip, send an email to: firstname.lastname@example.org.