Trader Brian Jones on Twitter: "The S&P system is still in a Negative chart. But that doesn't mean you can't get a big bounce. So today's sell off from highs so far is a surprise to many of the Bulls." / Twitter

The S&P system is still in a Negative chart. But that doesn't mean you can't get a big bounce. So today's sell off from highs so far is a surprise to many of the Bulls.