I heard one interesting theory, that could be more true than expected: the market is not doing so good in United States, because in general, corporate earnings there does not feel that good as well. For now, including Q1 & Q2 of 2015, the corporate earnings of the S&P 500 companies are -3%, and analysts expect that with the Q3 inclusion and release, it would be rather more a -3.3% trend. The "consequence" of the problem are said that markets does not take much risks has well and basically pull the trigger of "sell" more quickly. While I don't have a strong opinion neither against or for this theory, I would want your opinions about it, if it could be (more?) related to this fact, or if it does not matter much.