Among the earnings stories for Friday, Aug. 6, from AP Financial News:

ROCKVILLE, Md. (AP) - Vaccine maker Novavax Inc. reported a larger second-quarter loss as research and other expenses increased.

SCOTTSDALE, Ariz. (AP) - Medicis Pharmaceutical Corp. said its second-quarter profit more than doubled as sales soared for the drug company's acne products.

NEW YORK (AP) - Proposed federal rules that could hurt The Washington Post Co.'s biggest revenue and profit driver, the Kaplan education business, overshadowed a nearly eight-fold surge in the company's quarterly earnings.

ATLANTA (AP) - Shares of Radiant Systems Inc. rose to a 52-week high after the maker of touch-screen point-of-sale systems posted an 81 percent jump in second-quarter net income and raised its guidance for the year.

MILTON, Ga. (AP) - Shares of Exide Technologies fell after the battery manufacturer posted fiscal first-quarter results that disappointed investors.