Stocks have been in a nearly uninterrupted uptrend for more than a year, which usually only happens when everything is simply clicking and everyone is optimistic again, right? Have the 31% and 61% rallies in the S&P 500 and Nasdaq 100, respectively, been justified? Many market pundits would say yes. I would say no. You have to look at all available data, not just the ones that confirm your own beliefs.