To gain an edge, this is what you need to know today.Rare Earth FlexPlease click here for an enlarged chart of USA Rare Earth Inc (NASDAQ:USAR).Note the following:This article is about the big picture, not an individual stock.  The chart of USAR is being used to illustrate the point.The chart shows our buy zone for USAR.The chart shows that USAR has about doubled since our buy zone.Based on the latest China news, how USAR stock performs will be a tell as to how much the market is already discounting.RSI on ...