To gain an edge, this is what you need to know today. Blackwell Guidance Is The KeyPlease click here for an enlarged chart of NVIDIA Corp (NASDAQ:NVDA). Note the following: This article is about the big picture, not an individual stock. The chart of NVDA stock is being used to illustrate the point.In the history of the stock market, there has seldom been a stock like NVDA. Nvidia earnings will determine the near term course of the stock market.The chart shows that NVDA stock staged a major rally after touching the low band of the support zone.The chart shows that over the last few days NVDA st…