Meta Platforms (META -0.10%) stock has surged nearly double since November, but is still well below the all-time high. Is it time to sell? That depends largely on one big thing: Will its massive spending on Reality Labs built a mega-business, or prove a waste of the billions in cash its lucrative ad business generates? Motley Fool contributors Jason Hall and Jeff Santoro explain how investors should be thinking about it in the video below. 

*Stock prices used were from the afternoon of Feb. 9, 2023. The video was published on Feb. 19, 2023.