To gain an edge, this is what you need to know today.License To LosePlease click here for a chart of Robinhood Markets Inc (NASDAQ:HOOD).Note the following:This article is about the big picture, not an individual stock.  The chart of HOOD stock is being used to illustrate the point.The chart shows a mad rush to buy Robinhood stock.  Robinhood is a broker that primarily caters to younger and smaller investors.Robinhood will be the prime beneficiary of the new license to lose money that small traders are abou ...