Vaccine manufacturer Novavax (NASDAQ:NVAX) is falling on Tuesday following a major sentiment downgrade. Indeed, analysts at JPMorgan warned that NVAX stock has exceeded the true value it can extract from its Covid-19 vaccine. As a result of the erosion of confidence, the market is severely penalizing shares today.According to Investing.com, NVAX stock dropped more than 8% in the premarket session before seeing losses accelerate after the opening bell. As of this writing, shares are down more than 25%. JPMor ...