Note the additions: megaphone structure formed, indicators added, note the differences in price v values in macd and rsi leading up to the previous crashes, and most of all, see the bottom forming indicator, clearly building a top, note the quick rise of August 2008, then it was mortgages and the fall out, now it could be the sudden realization that central banks have become ineffective, QE is now not only no effect, but now harmful with negative rates causing deflation, yes DEFLATION. Watch OIL, watch gold, watch the dollar. DEFLATION, the one thing central banks are helpless to fight. The one thing they did NOT want to happen, has happened, because they COULD NOT CREATE INFLATION, the one thing that would demand they raise rates. And THEY DID IT TO THEMSELVES this time. Perhaps, like Brexit, the unexpected happens this FED mtg, and the FED raises rates just a bit, to help the Japan markets, hoping it will help the US markets, as directed by the democrats for the election (no dip before the votes are in). But, artificial manipulation is what it is, eventually, reality sets in, even they cannot control everything, and there is no effect, and suddenly the magic wand has no power. Funny how all of wall street, every big bank, is at the dem convention. And what if Trump gets elected, unexpectedly, perhaps wall street and the big bankers don't like it much. The polls are now even. I am certainly not correct in all I am suggesting COULD HAPPEN here, but it is just a hypothesis to consider parts of actually coming to reality, and what effects it could have on markets, which are clearly overbought. Historically the Bond market loves August, especially in an election year, what is it about that month. All of course, IMO.