Almost all "Bubbles" return to where they started. The trick is to try and determine where that is on a chart. The parabolic nature is one clue as are the most defined lines of support/resistance. The levels to watch are 4980, 2980, and 1830. There will surely be a bounce on all these levels. Which one will be a return to a bullish advance? Elliott Wave can give another clue. Where is the end of wave 1?