As an ardent student of Elliott Wave Theory I can't help but notice that in the attached CAPE ratio chart, there was a clear and unambiguous 5-wave pattern in the run up to the 1929 and 2000 peaks respectively. The current wave doesn't look particularly impressing so far and according to it's wave count is either (1) a wedge which implies a turning point is around the corner, or (2) a bullish and unfinished 5-wave move with an extended 5th wave that is about to unfold, implying the current bull run has a long way to go.