Markets are partying on – when will it stop?

Stock markets are reaching all-time highs. The S&P 500 is well beyond the peak it reached in 2007. Sentiment is positive, what can go wrong?

spx

Please realize I am a horrible chartist and the trendlines drawn are merely approximations. However, over the past three years, the S&P 500 has seen three major periods of rallying and note the dates/values are approximate:

08/2010 to 02/2011 (6 months): 1,040 to 1,340 (+29%)
11/2011 to 03/2012 (5 months): 1,160 to 1,420 (+22%)
06/2012 to 09/2012 (3 months): 1,270 to 1,470 (+16%)
11/2012 to ??/???? (6 months and ongoing): 1,350 to 1,620 (currently) (+20%)

Given historical trends, this rally is about to run out of gas. The party will likely stop sooner than later, so be careful and raise cash.