For almost 9 months, Bitcoin has found positive correlations with S&P500, Nasdaq and Dow Jones. I consider bitcoin to be a profitable business. For this reason, according to the Top Down Approach method, when the SP stock index reaches the lowest possible price in a cycle, I buy bitcoins and a basket of altcoins. Whenever, according to my previous analysis, the SP stock index approaches its reverse trend area, I sell bitcoins and altcoins. Happy trading