CuriosityStream (NASDAQ:CURI – Get Rating) was upgraded by Zacks Investment Research from a “sell” rating to a “hold” rating in a research note issued to investors on Tuesday, Zacks.com reports. According to Zacks, “CuriosityStream Inc. is a factual entertainment company. Its features include stunning visuals and unrivaled storytelling to demystify science, nature, history, technology, society […]