Among the stock activity stories for Thursday, Oct. 18, from AP Business News:
— Shares of Vivus Inc. fell after an analyst said Wall Street may be over-estimating gains from initial sales of the drug developer's obesity treatment Qsymia.
— Shares of Align Technology Inc. fell as the maker of the Invisalign clear braces system offered soft outlooks for its third and fourth quarters.
— Shares of Aegerion Pharmaceuticals Inc. climbed after the company said a Food and Drug Administration panel recommended that its cholesterol disorder drug lomitapide be approved.
