Novavax (NVAX) shares rallied 19.5% in the last trading session to close at $7.47. This move can be attributable to notable volume with a higher number of shares being traded than in a typical session. This compares to the stock's 17.3% loss over the past four weeks.The rise in share price comes after the vaccine-maker announced that the FDA has requested additional data on its protein-based COVID-19 vaccine as part of a post-marketing commitment. Although this signals a delay in full approval, investors to ...