Among the earnings stories for Tuesday, Aug. 11, from AP Financial News: KIRKLAND, Wash. (AP) ¿ Wireless broadband service provider Clearwire Corp. said its second-quarter loss shrank as its revenue grew and it added subscribers. INDIANAPOLIS (AP) ¿ Celadon Group Inc. reported that its fiscal fourth-quarter profit dropped 92 percent as the weak economy continued to drag down its freight business. MOUNTAIN VIEW, Calif. (AP) ¿ VIVUS Inc. said it took a loss in the second quarter, as license revenue decreased and the company spent more money to develop avanafil, a drug designed to treat erectile dysfunction. SANTA CLARA, Calif. (AP) ¿ Applied Materials Inc., which makes equipment used to produce semiconductors, said it slid to a fiscal third-quarter loss, reversing a year-ago profit, as revenue plunged 39 percent. But the results still beat Wall Street expectations, sending shares up 3 percent in after-hours trading. NEW YORK (AP) ¿ Shares of Nelnet Inc. fell after the student lender posted a decline in its second-quarter profit, hurt by restructuring charges and other items. NEW YORK (AP) ¿ WSP Holdings, a Chinese maker of oil drilling equipment, said its second-quarter profit fell by 62 percent as crude prices sank and petroleum companies cut back on exploration operations. BOSTON (AP) ¿ Shares of Parexel International Corp. dropped after the pharmaceutical services company said its fiscal 2009 fourth-quarter profit plunged on lower revenue and accounting charges, while giving a weaker-than-expected outlook.