Pivotal Research upgraded their rating on Roku, moving it to a Hold from a SellCathie Woods of Ark fame has been among their biggest supporters in recent weeksFundamentally, there are reasons to like the stock as wellAfter falling as much as 85% since last summer, we might be finally starting to look at what will be called the bottom in Roku’s (NASDAQ:ROKU) sell-off. Shares dipped briefly below the $80 mark in the initial weeks of May, but since then have started to consolidate. This is typically the first step in any bottom and will surely come as a massive relief to Roku investors. They were…