$NYXBT VS $XVG They some times follow and some times do not follow. www.stockcharts.com/c-sc/sc?s=%24XVG&p=D&st=2017-12-28&i=p95758815965&a=586432853&r=188 www.stockcharts.com/c-sc/sc?s=%24NYXBT&p=D&st=2017-12-28&i=p95758815965&a=586427510&r=290