Best Buy results, Medicare negotiations list, Hurricane Idalia: Top stories

Best Buy (BBY) lowers its full-year sales outlook despite topping earnings estimates. The Biden administration has shared its list of ten prescription drugs that will be subject to pricing negotiations between manufacturers and Medicare. Tropical Storm Idalia has officially been upgraded to a hurricane. It's expected to make landfall on Florida's west coast on Wednesday.

Yahoo Finance Live's Brad Smith highlights three of this morning's biggest stories.