Trader Brian Jones on Twitter: "Everyone knows how the system works. 10,000's of people use it. How could anyone be long the market today when it gave a sell signal on Thursday? I certainly didn't. https://t.co/lnKG30iRt4" / Twitter

Everyone knows how the system works. 10,000's of people use it. How could anyone be long the market today when it gave a sell signal on Thursday? I certainly didn't.