An Amazon.com Inc worker prepares an order in which the buyer asked for an item to be gift wrapped at a fulfillment center in Shakopee, Minnesota, U.S., November 12, 2020.

Check out the companies making headlines in midday trading. 

Moderna — The drugmaker's stock jumped 16.4% after AstraZeneca's CEO said the company would run another trial on its coronavirus vaccine candidate amid questions over the drug's effectiveness. Pizer and BioNTech, which are also working on their own vaccine, gained 1.7% and 3.1%, respectively.