Wall Street Zen lowered shares of Novavax (NASDAQ:NVAX – Free Report) from a hold rating to a sell rating in a report released on Saturday. B. Riley Financial reaffirmed a “buy” rating on shares of Novavax in a research report on Thursday, April 9th. Zacks Research raised Novavax from a “hold” rating to a “strong-buy” rating in a research report on Monday, July 6th. Finally, Weiss Ratings lowered Novavax from a “hold (c-)” rating to a “sell (d)” rating in a research report on Thursday, May 7th. Get Novavax alerts:Read Our Latest Stock Report on NovavaxNovavax Stock PerformanceShares of Novavax stock opened at $7.41 on Friday.