Among the earnings stories for Wednesday, March 11, from AP Financial News: TULSA, Okla. (AP) ¿ Rooftop air conditioner and heater maker AAON Inc. said Wednesday fourth quarter profit climbed by nearly one-third on lower revenue due to higher volume and improved productivity. CHICAGO (AP) ¿ Customers who shied away from buying expensive office furniture and gadgets helped drag down results at Staples Inc., which posted a 14 percent drop in fourth-quarter profit and missed Wall Street expectations. KEARNEY, Neb. (AP) ¿ Buckle Inc. said Wednesday that its profit rose 18 percent in the fiscal fourth quarter as teens continued to snap up its trendy jeans and accessories, and shares rose 5 percent. NEW YORK (AP) ¿ Shares of Salix Pharmaceuticals Ltd. rose Wednesday after the company reported a narrowed fourth-quarter loss on surging product sales. NEW YORK (AP) ¿ Luxury merchant Neiman Marcus Inc.'s chairman and chief executive told investors Wednesday that the company is working with its top brands to lower some prices while it slashes inventories to respond to sharp spending cutbacks among its wealthy customers.