Dr. Reddy''s Laboratories, (RDY: chart), said that resulted from a smaller proportion of revenue from international branded products and thinner profit margins in the U.K. Some 11% of revenue came from Mexico, where profit margins are below the company average. Selling, general and administrative expense rose 32% to 2.3 billion rupees, the company added.

Tiffany & Co, (TIF: chart), jewelry retailer, reported that Q1 earnings advanced to 30 cents a share, from 27 cents a share a year ago. Revenue advanced 6% to $539.2 million from last year''s $509.9 million, as U.S. retail sales rose 2%, international sales grew 13% and direct marketing sales increased 4%. Worldwide same-store sales advanced 5%. The company beat analysts’ expectations for earnings of 28 cents a share. For the fiscal year ending in 2007, the company expects earnings of $1.77 to $1.82 a share and sales growth of almost 10%.

Costco Wholesale Corp, (COST: chart), retailer, reported that Q3 net income advanced 12% to 49 cents a share on 11% revenue growth. The company missed analysts’ views by a penny. a share on revenue of $13.13 billion. The company added that comparable-store sales advanced 10%, international comparable-store sales were up 17% and U.S. comparable-store sales climbed 9%.

Layne Christensen Co, (LAYN: chart), industrial services provider, reported Q1 earnings of 30 cents a share, up from a profit of 21 cents a share a year-ago. Revenue advanced 62.1% from $96.7 million in the same period a year ago. The company said revenue climbed across all of its divisions with the main advances in its mineral exploration and water and wastewater infrastructure businesses.

The Bon-Ton Stores Inc., (BONT: chart), retailer, posted its Q1 loss broadened to 66 cents a share, from a loss of 27 cents a share in the year-ago period. Total sales doubled to $561.8 million from $262.5 million. The company posted income from operations of $6 million, compared to an operating loss of $3.8 million.